LHR - CHI

£345 Find Cheap Flights from London Heathrow Airport to Chicago – Compare and Save

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Everything you should know

Cheapest return fare
£524
Typical prices: £505-£703
Icelandair
Wed 28/10Sat 14/11
LHR - ORD • 1 stop
Cheapest direct flights
£526
Typical prices: £478-£644
British Airways
Mon 28/9Sun 31/1
LHR - ORD • Direct
Advice from real travellers
BA premium economy adds 18 cm legroom; Finnair Economy Comfort adds space for less.
American Main Cabin Extra adds early boarding; Lufthansa special meals suit dietary needs.
Expert advice
Expert advice
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Expert advice
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Direct flights
You can fly direct with American Airlines, British Airways, and United Airlines. Average duration is 8h 53m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top routes
Insights
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Avoid delays
Most punctual • 94% on-time
Best time • Fewest delays
Insights
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Top stopover airports
Cheapest • Avg £406 (return)
Shortest trip • 11h 36m (one-way)
Insights
Insights
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When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 16% compared to booking last minute.
Insights
Insights
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Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
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Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Heathrow to Chicago (LHR-CHI)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Chicago

Wed, 28 Oct - Sat, 14 Nov
Icelandair Logo
12:15 - 18:20LHR  London Heathrow-ORD Chicago O'Hare Intl
11h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
18:30 - 10:50ORD  Chicago O'Hare Intl-LHR London Heathrow
10h 20m1 stop Reykjavik Keflavik Intl
£524Icelandair
Thu, 1 Oct - Mon, 5 Oct
SWISS Logo
06:00 - 12:35LHR  London Heathrow-ORD Chicago O'Hare Intl
12h 35m1 stop Zurich
SWISS Logo
19:05 - 16:25ORD  Chicago O'Hare Intl-LHR London Heathrow
15h 20m1 stop Zurich
£525SWISS
Thu, 19 Nov - Wed, 2 Dec
Icelandair Logo
12:15 - 17:20LHR  London Heathrow-ORD Chicago O'Hare Intl
11h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
18:30 - 10:50ORD  Chicago O'Hare Intl-LHR London Heathrow
10h 20m1 stop Reykjavik Keflavik Intl
£525Icelandair
Sun, 4 Oct - Sun, 11 Oct
SWISS Logo
20:05 - 12:35LHR  London Heathrow-ORD Chicago O'Hare Intl
22h 30m1 stop Zurich
SWISS Logo
14:20 - 07:55ORD  Chicago O'Hare Intl-LHR London Heathrow
11h 35m1 stop Zurich
£525SWISS
Wed, 30 Sep - Fri, 29 Jan
British Airways Logo
13:10 - 15:55LHR  London Heathrow-ORD Chicago O'Hare Intl
8h 45mdirect
British Airways Logo
17:10 - 06:55ORD  Chicago O'Hare Intl-LHR London Heathrow
7h 45mdirect
£526British Airways
Fri, 2 Oct - Mon, 25 Jan
British Airways Logo
13:10 - 15:55LHR  London Heathrow-ORD Chicago O'Hare Intl
8h 45mdirect
British Airways Logo
17:10 - 06:55ORD  Chicago O'Hare Intl-LHR London Heathrow
7h 45mdirect
£526British Airways
Sat, 3 Oct - Sat, 31 Oct
Aer Lingus Logo
12:00 - 19:15LHR  London Heathrow-ORD Chicago O'Hare Intl
13h 15m1 stop Dublin
Aer Lingus Logo
16:55 - 09:05ORD  Chicago O'Hare Intl-LHR London Heathrow
11h 10m1 stop Dublin
£528Aer Lingus
Wed, 18 Nov - Sat, 28 Nov
Lufthansa Logo
11:10 - 18:25LHR  London Heathrow-ORD Chicago O'Hare Intl
13h 15m1 stop Munich Franz Josef Strauss
Lufthansa Logo
17:45 - 07:55ORD  Chicago O'Hare Intl-LHR London Heathrow
8h 10mdirect
£529Lufthansa
Tue, 20 Oct - Tue, 27 Oct
Aer Lingus Logo
08:50 - 14:00LHR  London Heathrow-ORD Chicago O'Hare Intl
11h 10m1 stop Dublin
Aer Lingus Logo
21:05 - 19:50ORD  Chicago O'Hare Intl-LHR London Heathrow
17h 45m1 stop Dublin
£529Aer Lingus
Sat, 19 Sep - Fri, 6 Nov
Lufthansa Logo
07:30 - 14:55LHR  London Heathrow-ORD Chicago O'Hare Intl
13h 25m1 stop Frankfurt am Main
Lufthansa Logo
14:30 - 09:40ORD  Chicago O'Hare Intl-LHR London Heathrow
13h 10m1 stop Denver Intl
£533Lufthansa
Booking Insights

KAYAK’s insights & trends for Heathrow to Chicago flights

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

How much is a return flight from London Heathrow Airport to Chicago?

Flight prices are typical for this route right now.

Flights to Chicago from London Heathrow Airport usually cost between £491 and £675 in October.
The lowest price found in the past 5 days was £524 on Icelandair (28 Oct–14 Nov).

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

The cheapest return flight from London Heathrow Airport to Chicago costs £472 on the route between London Heathrow Airport (LHR) and Chicago O'Hare Intl Airport (ORD). It is also the most popular route.

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

When flying from London Heathrow Airport to Chicago, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Mondays and the most expensive ones on Saturdays.

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

The cheapest month for flights from London Heathrow Airport to Chicago is February, where tickets cost £477 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is £812 and £776 respectively.

Can I save money by flying with a stopover from London Heathrow Airport to Chicago?

No, with an average price for the route of £766, prices are generally cheapest when you fly direct.

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

To get a below average price on the flight from London Heathrow Airport to Chicago, you should book around 2 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Expert advice

Expert advice for your flight from Heathrow to Chicago

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has travelled to more than 50 countries across six continents.

Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, The Points Guy, and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialising in airline interiors and regulations. 10 years ago, she pivoted to journalism. She shares her insights in leading aviation, travel and business publications and on her site, FlightChic.

Stefanie Waldek

Stefanie Waldek

Expert on ORD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Kirstie Pickering

Kirstie Pickering

Expert on LHR

Aviation and business journalist Kirstie didn’t leave England until she was 18 years old, but has since travelled to over 20 countries including Japan, Canada, and Iceland. Her travel expertise lies in European city breaks, including how to find the best locally-owned hotels and restaurants and how to optimise the airport experience for your needs.

Good to know - Cheap tickets from London Heathrow Airport to Chicago

Low season

January

Cheapest flight

£345
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly and prices are also 6% lower on average.
Flight from London Heathrow Airport to Chicago O'Hare Airport

When to book flights from Heathrow to Chicago

Are your dates flexible? Find out the best times to travel from Heathrow to Chicago based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Flights from Heathrow to Chicago: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Heathrow to Chicago 
Verified travelerFlew with Austrian Airlines-Sept 2026
Never plan any close connections in O'Hare. I give myself at least 3 hours if I have a connection. Nothing is convenient and if you need to change terminals, and you usually do, it takes forever. In addition, customs takes a long time. I entered the UK more easily than I got back into the country of my birth. Heathrow is not bad unless you need to go from any other terminal to Terminals 4 & 5. That is difficult bc there is no clear signage. Don't be afraid to ask for help. I have found people ready to help, especially if you are a senior.
Verified travelerFlew with British Airways-Jun 2025
I wish I'd known that there were food and shopping opportunities at the B gate area. This was a lovely, NOT busy place to spend time. I'd have gone directly there if I'd known. Definitely a nice place to wait.
Verified travelerFlew with British Airways-Apr 2025
Make sure to allow ample time between connecting flights. I have to hoof it when I realized that TSA required bags to be picked up and rechecked.
MichaelFlew with British Airways-Apr 2025
Have a light luggage as much as you can. Boarding gate walk is not a joke.
Verified travelerFlew with British Airways-Jul 2024
Gate 10 is a train wreck because there are multiple gates distinguished by a letter following A10. If possible get there as quickly as possible to find the appropriate gate.
EmilyFlew with British Airways-Mar 2024
Bring as few liquids as possible or put them in checked bag. They are very strict at Heathrow about all of them fitting into one small ziplock bag

FAQs for booking London Heathrow Airport to Chicago flights

  • What business lounges are at Heathrow Airport?

    If you fly with Finnair, you can access Club Aspire, an award-winning lounge located in Terminal 3. Opening times are generally from 05:00 to 20:30 daily, with a maximum stay of 3 hours. Complimentary food and drinks are offered, along with alcoholic beverages at an extra cost. There are quiet zones for working and business facilities such as printing and copying. For entertainment, you can watch TV, utilise digital reading materials or even just enjoy the views of the runway. Prices begin from around £35.

  • What kinds of facilities are there when I arrive at Chicago Airport?

    Both main airports in Chicago, O’Hare International and Midway Airport, have currency exchange and cash points within Arrivals. Toilets are present, along with accessible toilets for passengers with disabilities, and a small number of cafes if you need a snack after your long flight.

  • What family facilities are there at Heathrow Airport?

    Make it easier to travel with the family by seeking help from the airport porters. They can help you transport your luggage through the airport. They can also guide you to the family lanes, which ensure a smooth transit through security. To keep the children entertained, there are two children’s play areas, catering for babies and slightly older children. Baby-changing facilities are located throughout the airport.

  • How do I get to London Heathrow from central London?

    You can take the Heathrow Express, a fast and direct train running roughly every 15min from London Paddington. The journey time, on average, can take 20min. Children under 15 can ride free with an accompanying parent, and adult tickets can cost anywhere from £7-30, so we recommend booking in advance to secure a good price.

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

    In the last 5 days, the lowest price for a flight from London Heathrow Airport to Chicago was £345 for a one-way ticket and £524 for a return.

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

    KLM, Air France, and American Airlines offer inflight Wi-Fi service on the London Heathrow Airport to Chicago flight route.

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

    The Boeing 767-300 is the aircraft model that flies most regularly on the London Heathrow Airport to Chicago flight route.

  • Which airline alliances offer flights from London Heathrow Airport to Chicago?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from London to Chicago are Finnair and Austrian Airlines. With an average price for the route of £699 and an overall rating of 7.6, Finnair is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of £709 and an overall rating of 7.6.

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

    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 London Heathrow Airport to Chicago.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from London Heathrow Airport 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 London Heathrow Airport to Chicago?

    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 Chicago with an airline and back to London Heathrow Airport with another airline.

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

    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 Chicago from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London Heathrow Airport to Chicago

  • Looking for a cheap flight from Chicago to London Heathrow Airport? 25% of our users found flights on this route for £517 or less one-way and £604 or less round-trip.
  • There are three airports in total in Chicago: O’Hare International (ORD), Midway Airport (MDW) and Greater Rockford (RFD). Most flights on this route from London Heathrow (LHR) to Chicago, fly to O’Hare International on a direct path. Other flights go to Midway Airport but are much more costly and may include a stop.
  • For passengers with disabilities, there are accessible toilets and free wheelchairs to use at Heathrow Airport. Adapted telephones are present for wheelchair users, and there are also induction loops at various locations throughout the airport. Additionally, Heathrow has implemented the sunflower scheme – present for passengers with hidden disabilities. Sunflower lanyards can be picked up from staff.
  • If you want to hire a car when you arrive in Chicago, you will find the hire companies located in a slightly separate location. You can take the airport transit system there from the terminals. There are many choices, with a few leading companies such as Budget, Dollar and Enterprise Rent-A-Car.
  • Staying a night before your flight is often a good idea, and there are a number of hotels to choose from located directly at Heathrow. Aerotel is based in Terminal 3 and is a short walking distance away from Terminal 2, around a 7min walk. There is a choice of three rooms: Solo Plus, Double Plus or Family. Facilities include 24-hour reception and a restaurant.
  • A cost-effective way to arrive in downtown Chicago from O’Hare International is using the CTA (Chicago Transit Authority). The blue train lines are easy, as they offer services 24 hours a day. Take Train L, which will take you around 45min to arrive, with a ticket cost of around $5 (£4.15). You can take this train from all terminals, by following the ‘CTA’ signs.

Prefer to fly direct from London Heathrow Airport to Chicago?

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

Direct departures

London Heathrow to Chicago

Monday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Tuesday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Wednesday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Thursday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Friday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Saturday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Sunday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

See more direct flights

Direct returns

Chicago to London Heathrow

Monday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Tuesday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Wednesday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Thursday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Friday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Saturday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

Sunday

American Airlines,British Airways,United Airlines

American Airlines,British Airways, +1 more

See more direct flights

More options for your flight from Heathrow to Chicago

Complete your trip to Chicago with a hotel stay or car hire