$360 Find Cheap Flights from the United Kingdom to Chicago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Chicago departing on 5/17. 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
1 adult, Economy, 0 bags

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These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago
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Cheap Flights from the United Kingdom to Chicago

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from the United Kingdom to Chicago 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from the United Kingdom to Chicago

gio, set 10 - sab, set 19
Multiple Airlines Logo
6:55 am - 5:50 pm
MAN
-
ORD
16h 55m
2 stops
Multiple Airlines Logo
7:25 pm - 11:40 am
ORD
-
MAN
10h 15m
1 stop
$682Multiple Airlines
gio, set 10 - gio, set 24
Multiple Airlines Logo
6:55 am - 5:50 pm
MAN
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ORD
16h 55m
2 stops
Multiple Airlines Logo
7:25 pm - 11:40 am
ORD
-
MAN
10h 15m
1 stop
$683Multiple Airlines
sab, set 5 - sab, set 19
Multiple Airlines Logo
7:45 am - 5:50 pm
MAN
-
ORD
16h 05m
2 stops
Multiple Airlines Logo
7:25 pm - 11:40 am
ORD
-
MAN
10h 15m
1 stop
$684Multiple Airlines
mer, ott 7 - mar, ott 13
Icelandair Logo
1:05 pm - 6:15 pm
LHR
-
ORD
11h 10m
1 stop
Icelandair Logo
7:25 pm - 11:55 am
ORD
-
LHR
10h 30m
1 stop
$694Icelandair
sab, giu 13 - sab, giu 13
United Airlines Logo
8:00 am - 11:05 am
LHR
-
ORD
9h 05mnonstop
United Airlines Logo
3:40 pm - 6:30 am
ORD
-
LHR
32h 50m
1 stop
$698United Airlines
mer, ott 7 - lun, ott 12
Icelandair Logo
3:40 pm - 9:25 pm
LGW
-
ORD
11h 45m
1 stop
Icelandair Logo
7:25 pm - 2:40 pm
ORD
-
LGW
13h 15m
1 stop
$699Icelandair
mar, set 1 - lun, set 14
British Airways Logo
11:10 am - 1:50 pm
LHR
-
ORD
8h 40mnonstop
British Airways Logo
7:05 pm - 9:05 am
ORD
-
LHR
8h 00mnonstop
$713British Airways
lun, giu 1 - dom, giu 7
JetBlue Logo
12:20 pm - 8:00 am
LGW
-
ORD
25h 40m
1 stop
JetBlue Logo
8:49 am - 9:35 am
ORD
-
LGW
18h 46m
1 stop
$717JetBlue
ven, mag 15 - ven, mag 22
United Airlines Logo
8:00 am - 10:55 am
LHR
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ORD
8h 55mnonstop
United Airlines Logo
8:45 am - 5:55 am
ORD
-
LHR
15h 10m
1 stop
$718United Airlines
mer, set 9 - mer, set 23
JetBlue Logo
11:30 am - 7:22 pm
EDI
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ORD
13h 52m
1 stop
JetBlue Logo
1:00 pm - 9:20 am
ORD
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EDI
14h 20m
1 stop
$747JetBlue
Booking Insights

KAYAK's insights & trends for flights to Chicago

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

What is the cheapest day to fly to Chicago?

The average price of all round-trip flights to Chicago clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Chicago is Friday where round-trip tickets can be as cheap as $845. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $949 on average.

What is the cheapest month to fly to Chicago?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Chicago, 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 to Chicago is February, where tickets cost $580 on average for return flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from the United Kingdom is $873 and $816 respectively. For one-way flights, the best month to travel is February with an average price of $515.

What is the cheapest time of day to fly to Chicago?

The average price for all round-trip flights to Chicago depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Chicago is generally in the morning, when round-trip flights cost $882 on average. The most expensive time of day to fly to Chicago is generally in the evening, which is peak travel time and where the average cost of a ticket is $952.

What is a good deal for flights to Chicago?

If you’re looking for cheap airfare to Chicago, 25% of our users found tickets to Chicago for the following prices or less: From London Heathrow Airport $928 round-trip, from Edinburgh $1,076 round-trip.

How far in advance should I book a flight to Chicago?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Chicago, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 2 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Which is the cheapest airport to fly into in Chicago?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Chicago is Chicago Greater Rockford Airport (RFD), with an average flight price of $152.

Good to know

Low seasonJanuary
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 19% increase in price.

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

Insights shared by verified travelers who flew the route from the United Kingdom to Chicago 
Verified travelerFlew with British Airways
LHR
-
ORD
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
LHR
-
ORD
Apr 2025
Have a light luggage as much as you can. Boarding gate walk is not a joke.

FAQs - booking Chicago flights

  • What facilities are available for families with children at Chicago Airport?

    If you are travelling with small children and concerned about passing the time before boarding your flight, then take them over to the Kids on the Fly Children’s Museum at O’Hare (ORD) at Terminal 2 and let them stretch their legs for a while. Afterwards, there are family restrooms to freshen up located in each one of the airports five terminals.

  • Are there any onsite hotels at Chicago Airport?

    Hilton Chicago O’Hare Airport is located on the airport premises just opposite of Terminal 2 and has several business and meeting rooms which can be used to host corporate events and annual meetings or project launches. Hilton Chicago O’Hare Airport also boasts a full service health spa and fitness club for use by its guests.

  • How do I get from Chicago Airport to downtown Chicago?

    Chicago Airport offers the full complement of transportation options to the downtown area. PACE bus routes 250 and 300 provide regular service to the city centre which can also be accessed via the Metra train and the Blue Line of the Chicago Transit Authority. Of course taxis are in abundance at the airport and car rental is also a good option.

  • What shopping options are there at Chicago Airport?

    Chicago Airport has a wide selection of souvenir and duty-free shopping to choose from as well as premium retail concessions like Emporio Armani and Mont Blanc for more exclusive gift ideas. Love from Chicago carries lots of bric-a-brac which can make fun souvenirs and there is also MAC the cosmetics paradise.

  • Which Chicago airport is closest to central Chicago?

    There are 3 airports in Chicago. The closest airport to Chicago’s city center is Chicago Midway Airport (9 miles). Chicago O'Hare Airport and Chicago Greater Rockford are respectively 16 miles and 79 miles from the center of Chicago.

  • How much is a flight to Chicago?

    On average, a flight to Chicago costs $1,021. The cheapest price found on KAYAK in the last 2 weeks cost $652 and departed from London Heathrow Airport.

  • How does KAYAK find such low prices on flights 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 to Chicago.

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

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

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

Top tips for finding cheap flights to Chicago

  • Looking for a cheap flight? 25% of our users found flights on this route for $753 or less one-way and $1,002 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago flight deals.
  • O’Hare International Airport or Chicago Airport is one of the busiest in the world and getting around this Chicago hub is made easier by the ATS rail service which links International terminal 5 with Domestic terminals 1, 2 and 3, the PACE bus stop and the parking areas located around the premises.
  • Looking for a place to relax and unwind before or after your flight to Chicago? Terminal Getaway Spa offers three locations to help you do exactly that with a variety of hand, foot and Swedish massages guaranteed to soothe any tension right away located at Terminal 1 and Terminal 3 Main building and between Concourses H and K.
  • Through the Airline Lounge Service, most domestic and international carriers serving Chicago O’Hare Airport host lounges where you can relax and enjoy a bit of hospitality whether you are a member or not. United Club, British Airways Terraces Lounge and Delta Sky Club are just three of the options to choose from.
  • If you’re feeling a bit hungry and have time to spare after your flight to Chicago, there is a plethora of dining options available at Chicago Airport sure to suit every taste. From tavernas like Publican Tavern to wine bars like Bubbles Wine Bar; from the Mediterranean fare of La Tapenade to the German-American menu at Berghoff Café, there’s something for virtually everyone.
  • Seaway Bank offers international travellers on flights to Chicago four offices providing currency exchange, cash advances and Cashier Cheques so you can start to explore the city of Chicago without missing a beat. Foreign currency exchange locations are to be found at Terminals 1, 2, 3 and 5 for your convenience.

Reviews of the top 5 airlines serving from the United Kingdom to Chicago

 
See real verified KAYAK customer reviews for airlines flying to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United Kingdom to Chicago. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Chicago? 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.
7.6
Austrian AirlinesOverall score based on 912 reviews
6.8Entertainment
7.3Comfort
7.6Boarding
6.8Food
8.1Crew
Airline reviews

Last few years I didn't not have great experience with United Airlines.

2.0 MediocreAnonymous, Apr 2026
IAD - PHX
Read more Austrian Airlines reviews

Last few years I didn't not have great experience with United Airlines.

Booked economy. Seat felt like it was a bit more roomy than my last trans Atlantic flights. I had a nice person sitting next to me. Everything was as good as it could be considering you are 35,000 feet up in the air and in a metal container. Beers, wine, food were all readily available. Plenty of movies and shows to watch. Friendly flight staff

Short flight. Bare bones and kinda seeming like an older plane. But got me there on time and that's what counts. Perfectly fine flight all the way from start to finish.

My Austrian Air flight from Montenegro to Vienna was delayed by three hours because their plane de-icer was broken and they had to wait for the sun to come up before the ice could melt. This meant we missed our United flight altogether. So I can't speak about United, but I was not impressed by Austrian Air. They made us check in two carry on bags for a 60% full flight, and the bags didn't find us in the US for ten days. The re-routing they arranged included an extra leg, a midnight taxi ride across New Jersey and New York, and a five hour sleep in a hotel. Not impressed.

Most of the crew members were rude, flight arrived late and we missed our connecting flight, they damaged my friends suitcase so badly that two wheels had been destroyed.

Excellent flight. The crew was exceptionally attentive and organized. Attention to details is unmatched.

Loved the courtesy and punctuality. Very professional and most importantly on time.

Great! They got my vegetarian meal right, flight was comfortable, they helped store my heavy luggage. Pleasant crew and flight staff.

I did wish they would give us the entire little bottle Bailey's instead of just have 1/2 bottle at a time

Very limited legroom in a 10 hour flight.very old plane.

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Very good I can’t complain one bit. Thank you American Airlines for making my flight enjoyable and safe!

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

The new planes (American Eagle) are beautiful and especially comfortable. The flight attendants are consistently professional and courteous. And, while it may seem inconsequential, the new liquid tube of coffee creamer—in contrast to the powdered coffee creamer—makes all the difference in a cup of coffee.

I'm not sure American is capable of on-time arrivals and departures. When you land at ORD, you almost always get held on the tarmac because your gate is still occupied. I may have missed my connection, but that ended up up being significantly delayed as well. Once again, I finally got home well after midnight.

Didn't make it back on American Airlines due to a maintenance issue. The communication and updates were terrible. I ended up returning on Aero Mexico which had a much nicer aircraft with a large entertainment screen with movies and shows AND they had a nice inflight meal. That was a treat after being delayed 26 hours! I think some additional flight miles, or something should be offered for that long of a delay ---it was not pleasant at all---very physical and emotional experience.

Crew at the gate was very crabby and not at all polite. The plane was very hot the entire flight. And the seat cushion was very worn out.

The staff are very, very professional. It's what flying should feel like.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

Delays with no explanation. It could have been handled better.

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

The movie choices were poor. The worst problem is the treatment of passengers durinng pre-boarding. In one case the primes were checked in and sent down the boarding tunnek only to stand waiting there while the plane is cleaned. In the second case the bus was loaded, the doors closed and just stood there unmoving like sardeines in a tin for over TEN minutes. In both cases it was rough on us old guys who find standing for long periods trying.. In other words, Donnt just stack us up and forget us.

The most uncomfortable seat i’ve ever had on a flight

Waiting area on top of stairs before Boarding the bus wasn’t great. Took a long time to load the bus to gate.

The real reason why the flying experience with Icelandair ---was mediocre was because of not being able to enter DC airspace yesterday evening. This obviously was out of your control and do realize this is a safety issue. I did notice---that everything was being done to get us to Washington Dulles and we did arrive at Dulles SAFELY with just a 4 hour delay. Thank you!

Nice, quick flight. There were lots of empty seats so they told me I could sit next to the emergency exit where I would have more legroom.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Everything could have been better. What needed to be wrong with United went wrong

It was good. The seats in economy weren’t bad

Very good. Comfortable and I felt well taken care of from start to finish

We were in premium economy seats that appeared to be locked in plae, No reclining. My aching back.

I don’t understand how they charge as much as they do for such a poor experience

I wish the plane had pod seating for business class. I had a window seat (8K) and I had to climb over the person sitting on the aisle when I needed to get up. Also there is no partition between the seats for privacy when sleeping. The Asian airlines have much nicer business class seating. Their seats are wider for better comfort when sleeping.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Food was poor quality and the screens for entertainment didn’t work properly

It was a short flight, everything was good with it.

A shout-out to the flight attendent, Lauren, who was the main person assisting me. She was amazing - perfect balance of bright, cheerful, engaging, yet formal

OK, except for a cabin attendant's lack of attention.

efficient. on time. cabin crew were very professional and very nice to deal with. would definately fly BA again.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

I alrady responded to this request, and expllaned at length that this was the worst flying experience in my 77 years. I will NEVER fly BA again.

Airbus A350 is poorly designed for wheelchair users and reduced mobility passengers. The angle of the pods makes it awkward to transfer. I was able to but I have ab stability. It could be a real challenge for people with more severe mobility impairments. You'd think Airbus would have come up with a solution for this or thought more about us disabled folks more when designing this aircraft.

Check-in in SAN was long. ORD was good. Flight delayed On board crew was ok. No warmth or personality. LHrR barely made connection

The crew has always been great on BA. They are very friendly and accommodating. I like that they have vegetarian options already in the menu. And the free wine is a nice perk.) I noticed (both directions of my trip) minor upgrades/ replacements needed on the plane itself (touch screen didn't work with touch; bathroom light didn't go on). However, this is one of my favorite airlines.

Everything was spectacular except the boarding. It was just a mob of people while all groups were called over the public address system.

The Britts are wonderful to fly with and the crew were very hospitable. Again, I really wish they had been able to retrieve my carryon bag from baggage claim before the flight so I could be in a less worrisome state of mind, but that's not on them. I completely understand. The window seats with the dimmable windows were very cool!

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
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Everything you need to know for your flight to Chicago

Cabin class types available on flights to Chicago

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