£185 Find Cheap Flights from Chicago O'Hare Airport to United Kingdom – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from O'Hare Intl to the United Kingdom

Cheapest return flight prices found by our users on KAYAK in the last 5 days
London
London1 stop£488
Manchester
Manchester1 stop£474
Edinburgh
Edinburgh1 stop£624
Birmingham
Birmingham2 stops£411
Bristol
Bristol2 stops£582
Liverpool
Liverpool1 stop£590
Aberdeen
Aberdeen1 stop£620
Leeds
Leeds1 stop£609
Inverness
Inverness1 stop£549
Cardiff
Cardiff1 stop£646
London
London1 stop£488
Manchester
Manchester1 stop£474
Edinburgh
Edinburgh1 stop£624
Birmingham
Birmingham2 stops£411
Bristol
Bristol2 stops£582
Liverpool
Liverpool1 stop£590
Aberdeen
Aberdeen1 stop£620
Leeds
Leeds1 stop£609
Inverness
Inverness1 stop£549
Cardiff
Cardiff1 stop£646
Booking Insights

KAYAK's insights & trends for O'Hare Intl to the United Kingdom flights

Get data-powered insights and trends into flights from O'Hare Intl to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Chicago O'Hare Intl Airport to the United Kingdom flight route?

The cheapest ticket to the United Kingdom from Chicago O'Hare Intl Airport found in the last 5 days was to London, at £246 return. The most popular route is from Chicago O'Hare Intl Airport (ORD) to London Heathrow Airport (LHR), and the cheapest return airline ticket found on this route in the last 5 days was £246.

What is the cheapest time of day to fly to the United Kingdom?

The cheapest time of day to fly to the United Kingdom is generally at night, when retur flights cost £725 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the evening, which is peak travel time and where the average cost of a ticket is £809.

Can I save money by flying with a stopover from Chicago O'Hare Intl Airport to the United Kingdom?

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £693 on average.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to the United Kingdom?

The cheapest month for flights from Chicago O'Hare Intl Airport to the United Kingdom is January, when tickets cost £473 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is £1,005 and £819 respectively.

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to United Kingdom?

For Chicago O'Hare Airport to United Kingdom, Monday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from United Kingdom back to Chicago O'Hare Airport, the best deals are generally found on Thursday, with Sunday being the most expensive.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to the United Kingdom?

To get a below-average price on the flight from Chicago O'Hare Intl Airport to the United Kingdom, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know - Cheap tickets from Chicago O'Hare Airport to United Kingdom

Low season

February

Cheapest flight

£185
Best time to beat the crowds (27% less expensive on average)
Most popular time to fly (27% more expensive on average)
Flight from Chicago O'Hare Airport to Manchester

Flights from O'Hare Intl to the United Kingdom: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from O'Hare Intl to the United Kingdom 
Verified travelerFlew with British Airways-Mar 2026
Take early morning flights to adjust to weather-related delays.
Verified travelerFlew with British Airways-Jun 2025
Get a wheel chair if you have difficulty walking
JoeFlew with Iberia-Apr 2025
Get there early. Nice airport options while you wait.
Verified travelerFlew with Iberia-May 2025
Get to the airport early so you’re relaxed. Con yourself into believing it’s bedtime and try to sleep so that you can keep going all day when you get there. If you can afford more comfy seats it might be worth it - though I always have the cheap ones so I can’t say for sure. Try very hard not to. sit in the middle. I’m small and the guy next to me played games all night and didn’t care that he continually ( with every move) jabbed me with his arm. This was my first flight with Cheap Flights and it was far less convenient than other times I’ve flown overseas.
DinaFlew with United Airlines-Jan 2025
Anticipate delays, prepare for long walks through Heathrow to baggage claim or for connections.
KariFlew with British Airways-May 2024
Always check to confirm your assistance is in system. No wheelchair waiting for me in London. Had no clue about airport or how to get around. Got lost easy
AaronFlew with American Airlines-Dec 2023
Find a flight where you are allowed to choose your seats before the day of boarding for anything international.

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport to United Kingdom?

    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 O'Hare Airport to United Kingdom.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chicago O'Hare Airport to United Kingdom 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 O'Hare Airport to United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Chicago O'Hare Airport to United Kingdom with an airline and back with another airline.

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

    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 from Chicago O'Hare Airport to United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding a cheap flight from Chicago O'Hare Airport to United Kingdom

  • Looking for a cheap flight from Chicago O'Hare Airport to United Kingdom? 25% of our users found tickets from Chicago O'Hare Airport to United Kingdom for the following prices or less: London £412 one-way - £686 round-trip

Reviews of the top 5 airlines flying from O'Hare Intl to the United Kingdom

 
Need help choosing which airline to fly with from O'Hare Intl to the United Kingdom? 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
United AirlinesOverall score based on 10104 reviews
6.7Food
8.1Crew
7.3Comfort
7.7Boarding
7.1Entertainment
Airline reviews

Flight did not have wifi service. It was experiencing technical difficulties. Definitely and old plane that needs updating.

6.0 GoodMarc, Aug 2026
Read more United Airlines reviews

Flight did not have wifi service. It was experiencing technical difficulties. Definitely and old plane that needs updating.

This flight has a history of leaving late, however, I was pleasantly surprised that it was not delayed this day. The flight went smooth, except I was in a window seat and the wall and my feet were freezing. I found it difficult to sleep due to being so cold, I also was using 2 provided UAL blankets and could not get my feet warm. This was annoying, but I still made it there on time and safe.

Old 757 with poor entertainment system. United no longer partners with United for free text and email. O'Hara an absolute disaster! Limited gates clauses two hour delay. Unfortunately this appears to be the norm.

It was a good experience, unfortunately my checked baggages were come late and not arrived on time.

The boarding of took of late.The presentation of the food was horrable as was the tast of the food was cold and tastless.

Fight was delayed an hour due to operational issues ,then further delayed due to ground control for a total of about 1.30 hours. Salad was completely frozen and flatware was so cold you could barely handle it. Crew was friendly and professional and the flight was smooth. The aircraft was clean and well-serviced.

Horrible! I paid for a straight flight from Chicago to London. A week before trip it changed and now I had a connecting flight. Our flight was delayed an hour and a half because our flight crew was still flying in from CA. Forty passengers ran from one plane to the next. The next United Airlines flight was delayed two to three hours because of mechanical difficulties. They had to ready another plane which took time. I missed my scheduled excursion in London. 😢

Flight delayed for 2 hours due to a part. The plane sat waiting for boarding for a long time and during final preflight inspection the issue was found. Why not do the preflight inspection sooner if you know the plane is being used?

All good, useful to have the united app from check in to boarding

The flight was clean and on time, the crew were all very nice and we got the seats we booked. Plenty of food and beverages. The seats are too close so it’s very difficult to try and sleep comfortably.

OK overall. Flight was delayed Crew on flight was good

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

I flew economy class. Seats were very good and the crew was excellent

Fast and sensible boarding was absolutely amazing. But extortionate wifi and seats that barely moved, making me unable to sleep, didn't do a lot of favors.

I appteciate the very courteous staff. The flight was good. Something that wasn't good was that my bag was only checked as far as Dublin and I had a connecting flight to Vienna. (That was a mistake the ORD desk made.) Fortunately the desk at DUB was able to re-tag without me having to re-check in (which initially it seemed I might have to do.)

It was excellent! The plane left Chicago early. Arrived in Dublin early. The crew was excellent! It was a great experience.

Amenity kits were never handed out. There was zero friendliness and assistance by crew. Food was uneatable. One drink was offered and no wine, with dinner or before or after. Cocktails and beverages were not encouraged and when I asked for water, none was given. Poorest, most cramped business class flight I’ve ever been on.

Horrible. Garbage airline. Due to the strike we got a replacement plane/crew. I didn't get my exit row seat I paid for. Food was horrible. Plane was hot and didn't have AC vents.

I fly to the USA every 6wks on Ave and 99% of the time I fly Aer Lingus. If I fly BA I’m always disappointed. My only criticism is the food. I’m vegan and over the last year it’s got slightly better these last couple of flights but on the whole it’s not good! Salad and fruit salad for breakfast and that’s also the starter and desert for the lunch/dinner and the main is usually rice with fried veg 😳the pasta is pretty good though. That’s been the last 2 meals…. Everything else is fantastic.

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.

The staff was very nice and helpful. Some of the best crew I have met.

Disaster. Downgraded. Zero apology. No effort or coordination between gate and crew. Awful seat blocked by door emergency slide box. Iberia is a mess. App never works. Avoid this airline.

It was extremely cold in the back of the plane. The seats are uncomfortable and space very small. Crew was excellent as usual.

It was a wonderful experience with great food, great staff, and no difficulties boarding!

I was in business class for the 8 hour flight where: 1. The WiFi did not work 2. The entertainment system did not work 3. We were told there were no hot drinks for the entire flight

Paid for “extra room” selected seat. Wasn’t a benefit. Also was in aisle and was bumped almost every time attendants walked down aisle. Should have saved the assigned seat money and let them select.

Alaska located my mother, aware that she had mobility issues and they seated her closer to the door. She and I were seated together so I felt more secure to be able to assist her. The desk attendant reviewed what steps to take when boarding. Allowed us to board first, we loved that. I was allowed time to help her board slowly, seat her, put all her things in their place before the crowds came through. These small details made me want to travel Alaska more when possible.

I bought the ticket through Iberian, but I was unable to check in using my code. American wouldn’t let me check in and Iberian counter was closed.

The comfort level was low, but the staff was nice

Bad. Requested a diabetic meal. Was served everything i couldnt eat. So i did not estbthe whole flight dinner / breakfast. Sad and uncomfortable.

Hard to figure out how to put back the seat, how to get the entertainment, how to upload passport docs. Also, a warning in the airport that food was all for purchase would have been helpful.

Horrible. My dad was recently hospitalized and diagnosed with lymphoma and Icelandair refused to refund flight even though I had a letter from his physician.

The WiFi wasn’t working, so no one could watch any entertainment for 5 hours. The plane also was delayed and did not leave, nor did the staff prioritize those with connecting flights to de-board first. Everyone with a connecting flight to Munich missed their flight by 5 minutes. Then the next flight to Munich was 14 hours later. The airport could not compensate us because the closest hotel was about 2 hours away. This did not seem like the truth. I was not pleased with this traveling experience.

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Great crew, bumpy landings, two-hour wait for baggage with no communication or explanation. Will not fly again!

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

Comfortable seats, good service overall. The food could’ve been a little bit better. The boarding process was slightly chaotic and in fairness, not all of that is related to the performance of British Airways.

They gave away my business class seat. No explanation and no apology. Told me I had to take the downgrade if I wanted to get to India. Then no WiFi for 10 hours. Just ridiculous. We should not work with this company at Deloitte. They don’t know how to run a business.

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

Overall ok. Best part has always been the sundae dessert.

Very good staff members with sincere passion and responsibility in their job.

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Had a nice little suite although I couldn’t close the door (but I didn’t ask anyone to help). 5K is a nice seat and very private (you look in on first class). Enjoyable flight and nice crew.

Everything you need to know for your flight from O'Hare Intl to the United Kingdom

Information on your arrival and departure airports