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$187 Find Cheap Flights from Chicago to the United Kingdom

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 the United Kingdom departing on 1/7. 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.
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Best United Kingdom Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

London
London2 stops$414
Edinburgh
Edinburgh2 stops$609
Manchester
Manchester1 stop$554
Birmingham
Birmingham2 stops$568
Inverness
Inverness1 stop$506
Bristol
Bristol1 stop$651
Cardiff
Cardiff2 stops$791

Good to know

Low season

February

High season

June

Cheapest flight

$187
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 35% increase in price.
Flight from Chicago O'Hare Airport to London Heathrow Airport

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Chicago to the 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 to the United Kingdom.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to the United Kingdom 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 the 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 to the United Kingdom 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 cheap flights to the United Kingdom

  • On average*, there is no price difference when choosing to fly in the morning or the evening on this flight route.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Flights from Chicago to the United Kingdom: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Chicago to the United Kingdom 
Verified travelerFlew with United AirlinesORD-LHRJul 2024
Even though you may have a delay or two the important part is that you arrive safely from one point to the next. I wish I could get some credit back since I paid for a nonstop flight and ended up having a connecting flight.
Verified travelerFlew with British AirwaysORD-LHRMay 2024
Make sure you get a airline that allows one check-in luggage and respects its customers.
AaronFlew with American AirlinesORD-LHRDec 2023
Find a flight where you are allowed to choose your seats before the day of boarding for anything international.

Top 5 airlines serving from Chicago to the United Kingdom

Need help choosing which airline to fly with from Chicago 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 9206 reviews
7.3Comfort
6.7Food
8.1Crew
7.7Boarding
7.1Entertainment
Airline reviews

They need to improve their boarding process. Group 1 and/or paying first class passengers shouldn't be in the middle of boarding process

6.0 GoodErick, Oct 2024ORD - IAH
Read more United Airlines reviews

They need to improve their boarding process. Group 1 and/or paying first class passengers shouldn't be in the middle of boarding process

late departure due to some unspecified issue with ventilating the cabin. They got it running but it was FREEZING for the whole flight. I asked for a blanket but they didn't provide one. They could not turn up the heat. it was quite miserable.

We were delayed because of ground crew, not because the plane wasn’t ready to go. The food was better than usual!

I still prefer Delta, but Delta doesn’t fly to State College PA.

Everything was fantastic. Modern plane. All the amenities! Although the paid snacks and meals are pure robbery. Like i understand airlines need to make money, but 11$ USD for an overnight oats with some nuts in it and barely any pieces of apple.... Highway robbery

United needs to figure out its Economy PLUS standards; its better than economy but that's not saying much. It seems like United stripped away all the basics for an international flight (such as In Seat entertainment) and repackaged some of them as plus. Would not fly United internationally again.

The flight was bumpy. No Breakfast or coffee was served, not even a bottle of water. The food was okay but odd. Rice with peas instead of couscous with some unknown green thing. United Airlines did not tell me that there was VERY LIMITED HANDICAP SERVICE IN NAPLES. De-plane via 20 aluminum steps. Taken to Van. You must walk into the terminal, find luggage, and then walk out to the rental car pickup spot that is 1 block from the terminal.

Crew did their best but the plane configuration is too tight if you're bigger than an average sardine. Controls for the entertainment system didn't all work. The aircraft hadn't been cleaned in awhile.

Flight was delayed due to weather and clogged toilet. Had to deplane. Flight was 3 hours delayed. Crew was awesome and offered water and snacks.

Didn't make it dir to delays - no support from United staff

I had a TERRIBLE experience with the AA crew. I believe it was disability-related. It’s unlikely I will fly AA again.

Baby cried a lot. Nothing anyone could do about it. Just part of flying.

The flight crew was fantastic! Which the seats had a small TV.

The flight was delayed till next day ! They kept delaying every 30 minutes then after 3 hours they delayed it till next day. We kept waiting in line standing more than an hour to get the hotel and meal vouchers. There was no communication at all. Everything was bad

Smoothe flight. Pilot and crew did a great job. Uncomfortable seat in this jet, felt worn out

seats were way too small. Too short of a flight to offer amenities.

The main problem was delay. The plane was at the gate early and bags were loaded. However, there was no crew for the flight. They were inbound from LGA and had to land and make their way to our gate. It took more than 40 minutes. Then, once the crew arrived and boarded, one of the crew members had to deplane and then a replacement crew member had to be found. It took another 40 minutes or so to get the final crew member. In all, we took off about 2 hours later than our scheduled departure time. Once in the air, the flight was great. Smooth most of the way. The crew was professional and efficient.

Perfect flight. Efficient boarding, on time take off and early arrival. Generally smooth flight.

American is a steady for me. I always get what I expect from them. Sincere effort to get me from one place to another.

BAD. As a family could not sit together. The gate agent told us there was only one seat in the middle left, when we got on the plane the situation was very different with whole rows of seats empty

Friendly crew who apologised and explained reason for delay. Good on board service. Rather cramped seating. Late departure.

Both flights late. Almost missed connecting flight and flight staff not willing to help expedite us off the plane.

We couldn't talk to aer lingus we had issues with the flight change and aer lingus made us talk to kayak

Flight was great. Had to wait almost 100 minutes for luggage (some problem in the delivery). This may not be an Aer Lingus problem, but an SFO problem.

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.

Probably my favorite airline and way to go to Europe. Everything went smoothly! Food was tasty, crew was pleasant. Really cannot complain!

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.

Great customer service. Frequent updates from the pilot. Smooth flight. Good entertainment. Meal service.

The first leg of my 2 flights were delayed, causing me to miss my second flight and have to stay the whole night in Dublin. Super upset with this experience, and I still need to figure out how to get compensated for this.

Everything went well, but could have used a bit more legroom.

The connection required us to travel from terminal A to terminal E with very little time in between flights. While waiting in line, we were called to the service desk to provide our passports. We provided our passports at time of check in, assuming that American Airlines doesn’t communicate well with Iberia, this was a headache.

The staff on our flight from Charlotte to Boston were very friendly.

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.

HORRIBLE. 3 hours delayed. Crew did not communicate properly and was rude to passengers enquiring. Delay caused multiple passengers to miss connections.

1. The flight was late and I did jot get the seat I paid for. I paid for extra leg room and a window seat. I got a middle seat without extra leg room. 2. The customer service representative was not helpful. Explanation: many passengers arrived to the service desk in Madrid near baggage claim to rebook our flights. (We all missed our connecting flight due to delays in JFK). Upon arrival, ghere was one service agent and one line-business. After about 25-30 minutes the agent left and we could see her making a phone call. After about 5 more minutes, 2 other agents arrived. During our wait, another line formed for main cabin customers. We were told to go to the other line, even after waiting around 30-40 minutes. This would have been disastrous for ghose of us who had been waiting for so long. The agents need more training.

I fly to BNA with BA often and this was the worst experience. Arriving in nashville, check in was 1.5 hrs long in the queue with 1 very slow girl at the desk. When more staff came they only catered to priority customers. When all priority were checked in, instead of filtering from the top of the line they took the people from the end, the people who had been queuing for 5 mins vs almost 2 hours. The flight was delayed, for no good reason other than the staff took forever to do anything. At the gate there was zero organisation, we asked the crew what the delay was and they confirmed it wasn't the plane and it was the ground team. One of the flight attendants was one of the rudest I have EVER encountered, that man clearly hated his job, and people...I wish I'd got his name. Food was disgusting, seating was cramped. I've no idea what's changed in the last year but I'm truly shocked.

British Airways changed flight times after booking, allowing very little time between connections. We had to rush to barely make the next flight. They also ran out of certain vegetarian options during our 10-hour flight. Crew was fine, but overall a very unpleasant experience.

Being a platinum member and having reserved an exit row I was bumped into a middle seat which should not be allowed. On top we landed 10 minutes early to wait 45 minutes on the tarmac at Heathrow. I used to love Iberia, loving it less and less

I had assist travel booked in Denver to Manchester, but not listed in HeathRow, my daughter use a spare wheel chair herself for me , when going thro to board at Heathrow there was no help travel down for the ramp until a member of assistance stepped forward and insisted he would take me down the very steep ramp, seems he was the only person concerned with my safety.

Booked Economy Premium the 3 seats with my daughters and I, the seats should have been able to tilt back but it only one worked. the crew said they would report it but didnt seem both about our comfort on the return journey.#

British Airways canceled my flight and I had to fly on Lufthansa the next day. What a garbage airline 🗑️

3 hr delay. No water given while on the plane for 3hrs.

No fast track available, no organisation. Unpleasant boarding system at gate 20 at JFK. When giving feedback to the lounge team I was told to talk to the manager instead of taking the feedback.

The whole experience was great. The only improvement would be the entertainment selection

I will travel by BA only in future also. Only suggestion is they should give aisle seat in front near washroom for senior citizens

It was good overall. Entertainment was ok, one of the TV screens had issue. Bit old plane but leg space was good. Overhead luggage had good space. The worst part was experience at Heathrow airport, it was total chaos.

Comfortable, pleasant staff, quiet, good entertainment, food, drinks. Better than American (flight back) when we were crammed in and staff sometimes indifferent.

Pretty disappointing. Paid for business class. It was burning up the entire flight. For a 7 hr flight, after the first few hrs. The crew disappeared. Poor service.

One frustration after another. No gate personnel until very close to departure. Boarding procedure was chaos. Plane was dirty from previous transatlantic flight. Entertainment system not operational. Gate change for connecting flight which required another round of security clearance, almost causing a missed flight. The final blow was lost baggage upon arrival.

CVG to London was a good flight . Thank god the plane was not full . Seating was tighter than any international I’ve taken . We arrived in London 10 minutes early. Had it not been for handicap assistance I would have missed my connection. Had it not been for the extra 10 minutes because we landed early I would have missed my flight . 3 hours and 10 minutes from plane to plane as they were boarding when I arrived . None of that is the fault of British Air but the understaffed and confided security at LHR. Because of this I will never use British Air again unless I don’t land in London . Not the airlines fault but I never want to miss a flight because of the blunder in London . The worst I’ve ever encountered in international travel . Sorry British Air but your home needs better management.

Book cheap flights from Chicago to the United Kingdom

Recent round-trip flight deals

11/17Sun
2 stopsTAP AIR PORTUGAL
18h 15mORD-LGW
11/19Tue
1 stopTAP AIR PORTUGAL
28h 55mLGW-ORD
$414
12/8Sun
2 stopsTAP AIR PORTUGAL
18h 15mORD-LGW
12/10Tue
1 stopTAP AIR PORTUGAL
28h 55mLGW-ORD
$423
12/8Sun
nonstopBritish Airways
7h 45mORD-LHR
12/10Tue
1 stopBritish Airways
14h 20mLHR-ORD
$506
1/12Sun
nonstopBritish Airways
7h 45mORD-LHR
1/14Tue
1 stopBritish Airways
13h 30mLHR-ORD
$521
12/4Wed
1 stopAer Lingus
10h 10mORD-MAN
12/11Wed
1 stopAer Lingus
11h 50mMAN-ORD
$607
11/15Fri
1 stopAer Lingus
11h 45mORD-MAN
11/26Tue
1 stopAer Lingus
11h 30mMAN-ORD
$613
12/3Tue
1 stopAmerican Airlines
11h 45mORD-GLA
12/10Tue
1 stopAmerican Airlines
12h 25mGLA-ORD
$616
11/26Tue
1 stopAmerican Airlines
12h 05mORD-MAN
12/5Thu
1 stopAmerican Airlines
12h 55mMAN-ORD
$624
2/17Mon
nonstopIberia
7h 35mORD-LHR
3/5Wed
1 stopIberia
14h 15mLHR-ORD
$625
12/10Tue
1 stopIberia
15h 45mORD-MAN
12/18Wed
1 stopIberia
15h 10mMAN-ORD
$628

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Recent one-way flight deals

1/7Tue
1 stopIcelandair
10h 20mORD-LHR
$187
1/7Tue
1 stopIcelandair
19h 00mORD-LHR
$188
12/4Wed
1 stopBritish Airways
13h 40mORD-EDI
$363
1/5Sun
nonstopIberia
7h 50mORD-LHR
$374
2/3Mon
nonstopIberia
7h 40mORD-LHR
$377
4/30Wed
1 stopBritish Airways
12h 55mORD-GLA
$391
11/12Tue
nonstopAmerican Airlines
7h 35mORD-LHR
$398
11/17Sun
1 stopAer Lingus
22h 45mORD-LCY
$412
11/24Sun
1 stopAer Lingus
22h 45mORD-LCY
$419
4/30Wed
1 stopAmerican Airlines
10h 45mORD-EDI
$429

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Last minute flights from Chicago to the United Kingdom

Last minute flight, train and bus deals

11/10Sun
multi-stopTAP AIR PORTUGAL
31h 25mORD-LGW
11/21Thu
multi-stopTAP AIR PORTUGAL
29h 35mLGW-ORD
$514
11/10Sun
multi-stopTAP AIR PORTUGAL
31h 25mORD-LGW
11/19Tue
multi-stopTAP AIR PORTUGAL
28h 55mLGW-ORD
$515
11/10Sun
multi-stopTAP AIR PORTUGAL
31h 25mORD-LGW
11/21Thu
multi-stopTAP AIR PORTUGAL
29h 35mLGW-ORD
$537
11/10Sun
nonstopIberia
7h 35mORD-LHR
11/20Wed
multi-stopIberia
14h 15mLHR-ORD
$622
11/12Tue
nonstopIberia
7h 40mORD-LHR
11/19Tue
multi-stopIberia
24h 50mLHR-ORD
$632
11/10Sun
nonstopAmerican Airlines
7h 35mORD-LHR
11/20Wed
nonstopAmerican Airlines
8h 50mLHR-ORD
$641
11/8Fri
multi-stopBritish Airways
14h 35mORD-GLA
11/11Mon
multi-stopBritish Airways
24h 25mGLA-ORD
$694
11/8Fri
nonstopBritish Airways
7h 40mORD-LHR
11/11Mon
multi-stopBritish Airways
24h 50mLHR-ORD
$711
11/9Sat
multi-stopAer Lingus
10h 10mORD-LHR
11/13Wed
multi-stopAer Lingus
14h 05mLHR-ORD
$726
11/11Mon
multi-stopAer Lingus
11h 45mORD-LHR
11/14Thu
multi-stopAer Lingus
11h 10mLHR-ORD
$727

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Everything you need to know for your flight from Chicago to the United Kingdom

Cabin class types available on flights to the United Kingdom

Cabin classes available on flights to the United Kingdom. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.