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CHI - LHR

Find cheap flights from Chicago to London from £185

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Heathrow departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 3/6
Mon 10/6

Search hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to London.
In the last 7 days, travellers have searched 43,693,958 times on KAYAK, and here's why:

Save 28% or moreCompare multiple travel sites with one search.

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Cheap flight deals from Chicago to Heathrow (CHI-LHR)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
22:15 - 20:20ORD-LHR
16h 05m1 stop
21:25 - 18:15LHR-ORD
26h 50m1 stop
£434Icelandair
Find Deal
Mon, 19 Aug - Sun, 25 Aug
19:25 - 20:20ORD-LHR
18h 55m1 stop
21:25 - 21:15LHR-ORD
29h 50m1 stop
£438Icelandair
Find Deal
Mon, 19 Aug - Fri, 23 Aug
19:45 - 17:40ORD-LHR
15h 55m1 stop
19:30 - 19:05LHR-ORD
28h 35m2 stops
£442Scandinavian Airlines
Find Deal
Mon, 21 Oct - Mon, 28 Oct
19:45 - 13:35ORD-LHR
11h 50m1 stop
10:35 - 17:55LHR-ORD
37h 20m2 stops
£446Scandinavian Airlines
Find Deal
Fri, 11 Oct - Sun, 13 Oct
16:45 - 06:35ORD-LHR
7h 50mdirect
06:10 - 13:45LHR-ORD
13h 35m1 stop
£489Iberia
Find Deal
Wed, 9 Oct - Wed, 23 Oct
20:25 - 10:20ORD-LHR
7h 55mdirect
19:15 - 11:45LHR-ORD
22h 30m1 stop
£490British Airways
Find Deal
Mon, 7 Oct - Mon, 14 Oct
20:55 - 14:55ORD-LHR
12h 00m1 stop
06:45 - 14:00LHR-ORD
13h 15m1 stop
£495Aer Lingus
Find Deal
Fri, 23 Aug - Fri, 6 Sep
20:55 - 13:55ORD-LHR
11h 00m1 stop
07:40 - 14:00LHR-ORD
12h 20m1 stop
£496Aer Lingus
Find Deal
Thu, 19 Sep - Thu, 3 Oct
22:40 - 12:15ORD-LHR
7h 35mdirect
06:15 - 14:20LHR-ORD
14h 05m1 stop
£500Iberia
Find Deal
Tue, 3 Sep - Tue, 10 Sep
08:35 - 22:10ORD-LHR
7h 35mdirect
08:10 - 10:45LHR-ORD
8h 35mdirect
£514British Airways
Find Deal
Mon, 19 Aug - Wed, 28 Aug

Flights from Chicago to Heathrow - Travel Insights & Trends

Get data-powered insights and trends into flights from Chicago to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Chicago to London Heathrow Airport flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from Chicago to London Heathrow Airport.
Our data shows that the cheapest route for a one-way flight from Chicago to London Heathrow Airport cost £346 and was between Chicago O'Hare Intl Airport and London Heathrow Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is £509.

What’s the cheapest day of the week to fly from Chicago to London?

The average price of all flights from Chicago to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
For Chicago to London, Monday is the cheapest day to fly on average and Sunday is the most expensive. Flying from London back to Chicago, the best deals are generally found on Wednesday, with Sunday being the most expensive.

What is the cheapest month to fly from Chicago to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Chicago to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Chicago to London Heathrow Airport is January, where tickets cost £449 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is £1,032 and £945 respectively.

How far in advance should I book a flight from Chicago to London Heathrow Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Chicago to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Chicago to London Heathrow Airport, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 11 days before departure.

Which airlines provide the cheapest flights from Chicago to London?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Chicago to London found on KAYAK was with Icelandair for £185. Icelandair proposed a return connection from £434 and TAP AIR PORTUGAL from £441.

Which airlines fly most frequently between Chicago and London?

The airlines most regularly connecting Chicago to London are American Airlines (10 flights per day), British Airways (4 flights per day), and United Airlines (3 flights per day).

Which airlines fly direct between Chicago and London Heathrow Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Chicago to London Heathrow Airport.
There are 3 airlines that fly direct from Chicago to London Heathrow Airport. They are: American Airlines, British Airways and United Airlines. The cheapest price of all airlines flying this route was found with United Airlines at £406 for a one-way flight. On average, the best prices for this route can be found at United Airlines.

How many flights are there between Chicago and London Heathrow Airport per day?

Each day, there are between 17 and 19 nonstop flights that take off from Chicago and land in London Heathrow Airport, with an average flight time of 7h 53m. The most common departure time is 18:00 and most flights take off in the evening. Each week, there are 124 flights. The most frequent day of departure is Tuesday, when 15% of all weekly flights depart. The fewest flights depart on a Thursday.

Which cabin class options are there for flights between Chicago and London Heathrow Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Chicago to London take?

Direct flights from Chicago generally make it to London in 7h 30m. The flying distance between the two cities is 3,933 miles.

What’s the earliest departure time from Chicago to London?

Early birds can take the earliest flight from Chicago at 08:10 and will be landing in London Heathrow Airport at 22:10.

What’s the latest departure time from Chicago to London?

If you prefer to fly at night, the latest flight from Chicago to London Heathrow Airport jets off at 23:00 and lands at 12:45.

Good to know - Cheap tickets from Chicago to London

Low season

February

High season

March

Cheapest flight

£185
Best time to beat the crowds (29% less expensive on average)
Most popular time to fly and prices are also 18% lower on average.
Flight from Chicago O'Hare Airport to London Heathrow Airport

When to book flights from Chicago to Heathrow

Are your dates flexible? Find out the best times to travel from Chicago to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago to London flights

  • Where at London Heathrow (LHR) Airport can I exchange my US dollars for Pounds?

    There are a couple of places in the airport where you can enjoy currency exchange. Look for currency exchange centers in Terminals 2, 3, 4, and 5. There is also a branch of Barclays, Lloyds, and HSBC banks inside the airport terminals.

  • Is there a hotel at the London Heathrow Airport (LHR)?

    If you have a late arrival or your plane is delayed, you'll be happy to know that there is a hotel at the airport. The Aerotel T3 London Heathrow is located in Terminal 3. You can rent a room by the hour or the day.

  • Where can I relax at the Chicago O'Hare (ORD) or the Chicago Midway Airport (MDW)?

    At Chicago Midway Airport (MDW) there is a yoga room where you can meditate and relax. If you fly into the Chicago O'Hare Airport (ORD), there are a few spas where you can get a chair massage or another spa or beauty service.

  • How can I get from the London Heathrow Airport (LHR) to my hotel?

    The public transportation system in London is very advanced. You'll have the option of taking the tube (subway) or train (light rail) into the city. The subway station is located in Terminal 4 and it will take about 50min to get to the heart of the city. There is also an express train that goes to many areas in the city including London's Westminster borough. The Heathrow Express takes about 20min to get to the London Picadilly Station. The train picks up passengers at Terminals 2, 3, and 5.

  • What is the cheapest flight from Chicago to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Chicago to London Heathrow Airport was £232 for a one-way ticket and £545 for a return.

  • Which airports will I be using when flying from Chicago to London?

    Chicago has 2 major airports: Chicago Midway and Chicago O'Hare Intl. London Heathrow is the only airport in London. You’ll usually find the cheapest deals if you fly from Chicago O'Hare Airport.

  • Which airlines offer Wi-Fi service onboard planes from Chicago to London?

    All the following airlines offer inflight Wi-Fi service on the Chicago to London flight route: Finnair, British Airways, Iberia, American Airlines, Lufthansa, SWISS, and United Airlines.

  • Which aircraft models fly most regularly from Chicago to London?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Chicago to London flight route.

  • Which airline alliances offer flights from Chicago to London?

    oneworld, and Star Alliance are the airline alliances operating flights between Chicago and London, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Chicago to London?

    There are direct flights from Chicago to London on a daily basis.

  • Which is the best airline for flights from Chicago to London, Scandinavian Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to London are Scandinavian Airlines and United Airlines. With an average price for the route of £468 and an overall rating of 7.4, Scandinavian Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of £676 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Chicago to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Chicago is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London with an airline and back to Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Chicago to London

  • Looking for a cheap flight from London to Chicago? 25% of our users found flights on this route for £398 or less one-way and £598 or less round-trip.
  • Your flight to London Heathrow (LHR) could leave from either of the two main Chicago airports. Chicago's O'Hare Airport (ORD) is the larger of the airports. It is closest to the Elk Grove, Addison, and Des Plaines communities. Chicago's Midway Airport (MDW) is much closer to downtown and close to neighborhoods in Southwest Chicago such as Garfield Ridge, West Lawn, and the village of Bedford Park.
  • Although you can easily find a nonstop flight from Chicago to London Heathrow, you might have to change planes depending upon what flight you choose. Your layover and plane transfer could happen in Montreal, Toronto, Lisbon, Amsterdam, or at New York's JFK Airport. On average, the layover will be from 1-4h.
  • At the London Heathrow Airport, there is a tourist information center. It is located in the underground terminal and provides concierge services such as theater tickets, restaurant referrals, sightseeing tours, transportation, and London accommodations.
  • For convenience, you can have someone drop you off at the Chicago O'Hare Airport (ORD). Drop-off is permitted at all of the terminals. If your driver wants to avoid the heavy traffic around the airport, they can drop you off at one of the airport lots such as the Kiss n' Fly lot or the Multi-Modal Facility on Zemke Boulevard. Both of these locations offer a shuttle service to the airport.
  • London Heathrow (LHR) is a very large airport. To help passengers get around, there is a connection bus that will take you from one part of the airport to another. The Heathrow Airport also has a PODCAR system. This is an electric, driverless vehicle that covers a small section of the airport.
See more tips

Prefer to fly direct from Chicago to London?

Find which airlines fly direct from Chicago to Heathrow, which days they fly and book direct flights.

Direct departures

Chicago to London Heathrow

Monday

Aer Lingus, Air Canada, Alaska Airlines, +14 more

Aer Lingus, Air Canada, +15 more

Tuesday

Aer Lingus, Air Canada, Alaska Airlines, +14 more

Aer Lingus, Air Canada, +15 more

Wednesday

Aer Lingus, Air Canada, Alaska Airlines, +14 more

Aer Lingus, Air Canada, +15 more

Thursday

Aer Lingus, Air Canada, Alaska Airlines, +14 more

Aer Lingus, Air Canada, +15 more

Friday

Aer Lingus, Air Canada, Alaska Airlines, +14 more

Aer Lingus, Air Canada, +15 more

Saturday

Aer Lingus, Air Canada, Alaska Airlines, +14 more

Aer Lingus, Air Canada, +15 more

Sunday

Aer Lingus, Air Canada, Alaska Airlines, +14 more

Aer Lingus, Air Canada, +15 more

See more direct flights

Direct returns

London Heathrow to Chicago

Monday

Aer Lingus, Air Canada, Alaska Airlines, +13 more

Aer Lingus, Air Canada, +14 more

Tuesday

Aer Lingus, Air Canada, Alaska Airlines, +13 more

Aer Lingus, Air Canada, +14 more

Wednesday

Aer Lingus, Air Canada, Alaska Airlines, +13 more

Aer Lingus, Air Canada, +14 more

Thursday

Aer Lingus, Air Canada, Alaska Airlines, +13 more

Aer Lingus, Air Canada, +14 more

Friday

Aer Lingus, Air Canada, Alaska Airlines, +13 more

Aer Lingus, Air Canada, +14 more

Saturday

Aer Lingus, Air Canada, Alaska Airlines, +13 more

Aer Lingus, Air Canada, +14 more

Sunday

Aer Lingus, Air Canada, Alaska Airlines, +13 more

Aer Lingus, Air Canada, +14 more

See more direct flights
See more direct flights

Top 5 airlines serving from Chicago to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Chicago to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Scandinavian AirlinesOverall score based on 1432 reviews
6.8Food
7.3Comfort
6.7Entertainment
7.7Boarding
8.0Crew
Airline reviews

TERRIBLE! Staff was unfriendly, rude, and demeaning. One flight attendant touched me to grab the complimentary blanket off my neck because I couldn't take it home, while a bunch of other people took theirs home. I have never been so ill treated. I am not happy at all. And flight was delayed, no information until short notice for everything. Lost an entire day at my destination. I expect a full refund for that experience. Never will fly with them EVER again

2.0 MediocreAnonymous, Apr 2024BOS - CPH
Read more about Scandinavian Airlines reviews

TERRIBLE! Staff was unfriendly, rude, and demeaning. One flight attendant touched me to grab the complimentary blanket off my neck because I couldn't take it home, while a bunch of other people took theirs home. I have never been so ill treated. I am not happy at all. And flight was delayed, no information until short notice for everything. Lost an entire day at my destination. I expect a full refund for that experience. Never will fly with them EVER again

My return flight has been changed to JFK from EWR without any notice or reason

I had economy plus and it’s definitely worth the price. The seats are so comfortable, so much space, great large TV screens, and you get fed often. Really decent food (although other fish was overcooked.) They do need better movie choices. The crew is the best. Super friendly and accommodating. So much better than most American run Airlines.

They lost my luggage. Tromso in winter without warm clothes is not fun.

The flight was on time and loading was fine. I really disliked that all drinks other than coffee or tea had a cost. Deplaning was also an issue as people did not wait for those in front of them to get out before they pushed forward

Flight was delayed 3 hours. Pilot cancelled flight under 4 people volunteered to change their seats to economy from business class.

My seat was not the one I paid for, the crew was very curt, and the cabin was extremely warm.

Old plane with terrible business class seats - good food and service. Boarding was a joke with business class boarding last.

Best airline to travel on a budget- really like their reasonably priced access to the SAS lounges where available.

The flight was cancelled early on and messed up the whole vacation and hard to get a refund from Kayak as they owned the ticket and of course they did not believe that SAS cancelled the ticket. Definite bad side to third party. SAS had rescheduled but overlapped the connecting flights. That did not work. Flight was cancelled long ago but Kayak still has it. Like it was taken? Bad IT ? Or all assumptions and no follow up which is the whole IT world. It needs to wake up and be more efficient. Especially as the world is going, there will be no freedom to do anything. And we will be living like the Middle Ages. Yeah, go read up on that while you still can.

Are Longus was fine. I booked thru Kayak and was unable to get my business class seat early. Sat next to galley. Crew forgot to wake me for breakfast.

I loved how they arrange boarding (starting with people seated in back and moving to the front). Flight crew was very polite and welcoming. Seating was ok, I felt like there was enough leg space however it is noticeable when the passenger in front of you sets their seat back.

Short flight so not much to rate. Surprised I had to pay for a soda.

Nice to be on a flight that wasn't fully booked so there were only two of us in the three seat row.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

Very good need to offer better choice of food for business

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

Aer Lingus doesn't have plug ins for devices at each seat. They also did not give me a dairy free meal as requested and confirmed by staff. It was as if I had not requested anything. Otherwise, they were great!

The transatlantic flight was wonderful. The regional reminded me of jet blue. Crazy and packed. Not enough overhead space and tough on elderly.

All OK. Food, best bring your own. Even a BigMac will be better.

I liked the friendly crew and desk staff, all very helpful. I was surprised and a little annoyed on my outbound flight from LGW to MCO as I had prepaid and booked my seat, which was all correct at check in on my boarding pass. when I got on the plane someone was in my seat ! I was moved to another seat. The food choice is quite limited and I feel that an option of a muffin for breakfast snack would be welcomed, not everyone wants egg or bacon wrap. The choice of entertainment is good, plenty to keep you busy on a long haul flight. I liked the option offered to have the cabin bag checked into the hold, it saved me as an older, lone traveller lifting my case into the overhead locker or finding there was no space.

The only comment I have is why do you sell snacks on board? They should be free. When we take domestic flights here in US, our snacks are free. Also, please communicate with me in English. I received so many emails way before my flight that were in Spanish that I had to ask my son to interpret for me. You should be WELL AWARE if the customers you are communicating speak the language, it does mean that we speak and understand Spanish because we are traveling to Spain, NOT NECESSARILY! Thank you!

good service from crew. Before the would have an option between cookies or nuts as snacks.. Now, there are only cookies. too bad. People who can not have sugar don't have a choice.

Flight was delayed by well over an hour. Communication was terrible.

I’m hoping for WiFi included. Everything else was very good

Seats, comfort level ugh. Crew was not attentive, only to coach

An average flight experience. For our transatlantic portion, they provided a main meal and two snacks. However, the food was not very tasty and the drinks far too small and infrequent for such a long flight. The regrettable part of the flight was that the toilets were extremely filthy. I feel this is unacceptable.

Rude security cunts. However the lady that issued my boarding ticket when I was flying back from New York was lovely & helpful!!

Appalling! The flight was delayed by 3.5 hours and the American Airlines staff at the airport where nit very helpful. Once boarded, the flight crew were unhelpful, the food was poor and the aircraft was tatty.

I called prior to flying to confirm our baggage allowance which was 5 bags. On our outbound flight thee were no problems. On the return flight we were charged for each bag totaling $400! We are working with customer service to resolve the issue.

Try to humanize onboarding and take AI out. It's embarrassing and useless

Disappointed everytime. The app doesn't load the boarding passes. They have lots of agent that seem to be busy doing nothing with a long line waiting to get paper boarding passes. Food choices are poor. Entertainment is less than entertaining.

Horrible experience. Nothing to give to kids to keep them entertained.

Trouble keeps changing the time and I was booked different flight without knowing it was bad experience

I ended up buying (for $340) "extra space" seats because I my flying partner was given a STY boarding pass, leading me to conclude that she was on standby and that we had to buy seats on the flight. I later learned that the flight was not sold out and that we could have gotten on as usual. To be honest, I felt swindled.

This flight is always a cramped bus. The gate area was inadequate and announcements were hard to hear. The flight was delayed 45 minutes to an hour by a broken aircraft door, making our total delay from Vilnius 5 hours.

I'm Canadian. I have the unfortunate experience of pretty not having the choice to fly with them. THEY ARE TERRIBLE.

The process overall was pretty seamless, and the crew were very friendly (especially Michael). Considering we booked expecting Lufthansa and the flight was operated by United, it was still a very good service and journey overall. The in-flight entertainment was great, with lots of quality options. One slight negative was that I had selected a vegetarian meal prior to flying, but received a vegan one. I think there should be more dietary options as it meant I missed out on some food that I would have preferred (and it seemed like the standard meals and snacks had a vegetarian option anyway). There was also a group of people who were moving around a lot and being generally disruptive at the quietest part of the flight, when the lights were off and most people were sleeping. I would have appreciated staff stepping in to encourage them to be mindful of others). Towards the end of the flight (which was very early in the morning in both time zones), the lights suddenly came on and breakfast was served. In my opinion, this was too early, and everyone was rudely awoken from sleep. After breakfast was cleared away, the lights went off again for about 45 minutes, allowing people to sleep some more. Then the lights came on again for landing. It seems like if they had served breakfast later, the lights on-lights off-lights on shenanigans could have been avoided, and people could have slept longer (and staff could have rested longer too).

You only get a chocolate square and small bottle of water.!

to be bussed around the airport, then have to sit on the plane for an hour whilst the plane was deiced not once, but twice, then to have to wait for a tug driver is unacceptable. The Captain was very good at communicating.

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Very cramped seats in economy, difficult to get comfortable with your legs and feet and back. The seat width is ok but I’m average size. Food is HORRIBLE. Crew is friendly. Delays and very tight connections made it tough for navigating. We would have missed our connecting flight if it wasn’t delayed too. The terminal transit was slow and normally every 10 minutes before 8pm, after 8 pm is every 30 minutes!!!!! No free wine or drinks!! Below average attitude.

Leg room was better than expected. Lavatory’s were easy to access.crew was grea!

Horrible seat allocation. Boarding was slow. Food was average and so was entertainment. The TV terminal didn't work and so had to use remote.

Lost one checked bag.and wasted 30min waiting and filing missing baggage report. Very unsatisfied.

This was an American Airlines flight. The crew were very unhappy and quite grumpy. Abrupt to the point of being rude. The food was dreadful. Indeed the breakfast was in edible. I will avoid AA at all costs in the future.

Book cheap flights from Chicago to London

Cheapest flights to London from Chicago found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Chicago to London found on KAYAK in the last 72 hours.
1/10Tue
1 stopIcelandair
10h 30mORD-LHR
£185
23/9Mon
1 stopIcelandair
18h 50mORD-LHR
£202
5/10Sat
1 stopIcelandair
10h 30mORD-LHR
£229
17/6Mon
2 stops
23h 58mORD-LHR
£241
17/6Mon
2 stops
23h 58mORD-LHR
£242
16/10Wed
1 stopJetBlue
13h 48mORD-LHR
£319
9/7Tue
1 stopJetBlue
16h 01mORD-LHR
£332
9/9Mon
2 stopsScandinavian Airlines
19h 50mORD-LHR
£344
23/9Mon
directUnited Airlines
8h 15mORD-LHR
£361
2/10Wed
directUnited Airlines
8h 15mORD-LHR
£362

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Last minute flights from Chicago to Heathrow

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Chicago to London that are departing in the next 10 days.
6/5Mon
multi-stopAer Lingus
11h 00mORD-LHR
8/5Wed
multi-stopAer Lingus
11h 10mLHR-ORD
£499
8/5Wed
directIberia
7h 50mORD-LHR
15/5Wed
multi-stopIberia
14h 05mLHR-ORD
£500
8/5Wed
directBritish Airways
7h 50mORD-LHR
13/5Mon
multi-stopBritish Airways
24h 20mLHR-ORD
£504
8/5Wed
directBritish Airways
7h 50mORD-LHR
21/5Tue
directBritish Airways
8h 40mLHR-ORD
£514
4/5Sat
directUnited Airlines
8h 10mORD-LHR
13/5Mon
multi-stopUnited Airlines
32h 20mLHR-ORD
£532
4/5Sat
multi-stopScandinavian Airlines
16h 45mORD-LHR
15/5Wed
multi-stopScandinavian Airlines
32h 20mLHR-ORD
£537
4/5Sat
multi-stopScandinavian Airlines
19h 50mORD-LHR
13/5Mon
multi-stopScandinavian Airlines
27h 25mLHR-ORD
£538
4/5Sat
directUnited Airlines
8h 10mORD-LHR
11/5Sat
multi-stopUnited Airlines
12h 30mLHR-ORD
£574
4/5Sat
directLufthansa
8h 10mORD-LHR
11/5Sat
directLufthansa
8h 50mLHR-ORD
£575
8/5Wed
directLufthansa
8h 10mORD-LHR
15/5Wed
directLufthansa
9h 05mLHR-ORD
£692

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Chicago - London Flights

Destination:

London (LHR)United Kingdom

Return flight deals:

London - Chicago

Cabin classes:

£5,054
£3,888
£1,435
£509