$359 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 9/10. 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
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

Thu, Sep 17 - Wed, Sep 30
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
$675Multiple Airlines
Thu, Sep 17 - Sun, Sep 27
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
Tue, Oct 6 - Sat, Nov 14
Lufthansa Logo
10:35 am - 6:15 pm
MAN
-
ORD
13h 40m
1 stop
Lufthansa Logo
6:30 pm - 8:40 am
ORD
-
MAN
32h 10m
1 stop
$701Lufthansa
Tue, Oct 6 - Sat, Nov 14
Lufthansa Logo
5:55 am - 6:39 pm
MAN
-
ORD
18h 44m
2 stops
Lufthansa Logo
6:40 pm - 8:40 am
ORD
-
MAN
32h 00m
1 stop
$708Lufthansa
Fri, Sep 11 - Sun, Sep 20
Multiple Airlines Logo
2:40 pm - 6:15 pm
MAN
-
ORD
33h 35m
2 stops
Multiple Airlines Logo
7:25 pm - 11:40 am
ORD
-
MAN
10h 15m
1 stop
$710Multiple Airlines
Wed, Sep 16 - Wed, Sep 23
Icelandair Logo
1:05 pm - 6:15 pm
MAN
-
ORD
11h 10m
1 stop
Icelandair Logo
10:25 pm - 11:40 am
ORD
-
MAN
31h 15m
1 stop
$733Icelandair
Wed, Sep 16 - Wed, Sep 23
Icelandair Logo
1:05 pm - 9:25 pm
MAN
-
ORD
14h 20m
1 stop
Icelandair Logo
10:25 pm - 11:40 am
ORD
-
MAN
31h 15m
1 stop
$735Icelandair
Tue, Sep 15 - Wed, Sep 23
United Airlines Logo
7:30 am - 2:55 pm
LHR
-
ORD
13h 25m
1 stop
United Airlines Logo
6:05 pm - 8:30 am
ORD
-
LHR
8h 25mnonstop
$759United Airlines
Wed, Sep 9 - Wed, Sep 23
British Airways Logo
6:45 am - 2:00 pm
LCY
-
ORD
13h 15m
1 stop
British Airways Logo
3:45 pm - 10:20 am
ORD
-
LCY
12h 35m
1 stop
$765British Airways
Tue, Dec 1 - Sat, Dec 5
British Airways Logo
6:50 am - 2:00 pm
LCY
-
ORD
13h 10m
1 stop
British Airways Logo
8:10 pm - 9:25 pm
ORD
-
LCY
19h 15m
1 stop
$779British Airways
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 Wednesday where round-trip tickets can be as cheap as $866. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $1,008 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 round-trip 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 November, where tickets cost $610 on average for return flights. On the other hand, the most expensive months are July and December, where the average cost of tickets from the United Kingdom is $938 and $937 respectively. For one-way flights, the best month to travel is December with an average price of $277.

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 afternoon, when round-trip flights cost $900 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 $992.

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 $980 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 5 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 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 $130.

Good to know

Low seasonJanuary
Cheapest flight$359
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Manchester to Chicago

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 $1,004. The cheapest price found on KAYAK in the last 2 weeks cost $580 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 $728 or less one-way and $980 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.
7.3
Aer LingusOverall score based on 1605 reviews
8.1Crew
7.4Boarding
7.2Comfort
7.0Entertainment
6.7Food
Airline reviews

From Rome to Dublin if you want any refreshments you have to pay for them, Not used to this as we typically get soft drinks and a little snack on a 3hour flight in the US.

8.0 ExcellentAnonymous, Jun 2026
DUB - MCO
Read more Aer Lingus reviews

From Rome to Dublin if you want any refreshments you have to pay for them, Not used to this as we typically get soft drinks and a little snack on a 3hour flight in the US.

Boarding was fine, difficult to understand the guy over the speaker though so we were unsure when exactly to board until they updated the monitor by the gate. Flight itself was fine, nice flight attendants, seats were comfortable enough, good selection of entertainment on the screens. Other airlines at a similar price point have included wifi though, at a minimum messaging, for free, so that was a little disappointing to not have that. But otherwise fine. Food was pretty decent, nice hot meal, good drink selection, nice snacks. Bathrooms were ok, could've been cleaned a little more often, but they were never bad.

Vegetarian food option was very poor. Effectively, overcooked rice ("risotto"). Zero protein which is always disappointing with no vegetables and poorly seasoned. Basically had lots of carbs on 6-hour flight. Not acceptable for business class in 2026. Flight was otherwise very good.

Small plane. Tight seating . What can one say except that it was fast!

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

OK overall. Flight was delayed Crew on flight was good

On time, only a little turbulence, very competent and caring attendants. Clear information.

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.

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

The crew was friendly. The plane was comfortable. In-flight wifi didn't work well at all. The ride was quite turbulent but understandable given the weather.

The seats were extremely cramped, with very little legroom or personal space. There was no room left in the overhead bins for a backpack, and the space under the seat in front was so limited that I could barely fit my bag underneath. Overall, the seating arrangement felt very uncomfortable and overcrowded.

weather delay of almost 2 hours then we landed and our gate wasn't available so we waited another 30 min

Delayed flight more than I hour. When boarding we spent some additional time on the plane before takeoff ....

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

The flight attendants were extremely sourly and borderline rude. I did not feel appreciated as an AA customer once.

The flight from LA to Chicago was smooth and service was very good overall.

The Mario was so helpful and provided amazing customer service however l have being waiting for a callback for almost a week now and have not heard anything further after l informed them l wanted to change my date of traveling because of my hospital appointment even send them proof and l was unable to use manag your booking on their website is a bit frustrating and l would appreciate an update on My request as soon as possible. And have called them times without numbers no response

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

They lost my baggage and I am still struggling to the information and update

The homeless eat better than what was served on that plane. Pretzels and ice cream? My last trip to Europe. Everything is small, but the bill.

The crew was attentive and personable. The plane was clean and the seats comfortable. It was an excellent trip!

We paid for saga class, which is the business class for international. My seat was broken and did not recline and my monitor for in-flight entertainment was broken.

The flight itself was fine, even with a one-hour delay leaving on the Reykjavik tarmac (the lost time was made up during flight). Our experience at the Reykjavik airport on arrival was terrible due mostly to the one hour it took for passport control. Only two stations were open for our category, and the room was full with a huge crowd.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

Repurchased food and it was moldy and expensive. But I figured it was bad luck so I purchased a cup-o-noodles, halfway through them we hit turbulence and the flight attendant was passing with the garbage, it would have been two seconds to grab it, but he was snarky grabbed someone else’s plastic cups and went to buckle up… I used the puke bags to secure the soup before it became an accessory. When he finally came around he gave me a face like a petulant child as I handed him the soup neatly wrapped in the paper then plastic bag. I watched a movie in silence as the rental or headphones was ridiculous at 4€ for those .10€ cheap plastic toys. No English subtitles on an American movie… crazy. I disliked the whinny little tourist trap and now I hope that it sinks into the ocean or erupts in a catastrophic eruption for their beloved “I live on an active volcano” pride.

At least one soda free, felt like I was nickeled to death.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

Pleasant, attentive flight attendants, but they’ve got to upgrade their seats to be a true “business class” carrier.

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

Was a bit surprised that Icelandair flies a domestically configured 757s on long-haul flights to Iceland (no lie-flat seats in business class).

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Perfect airline, super friendly, great service, tasty food. Would fly again.

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.

Seats not as comfortable as I had hoped. Food was very nice, service was fine. Entertainment options very nice. Had thought the premium economy was a more plus 2-3-2 layout but it was a 2-4-2 with seats not as wide as I had expected.

I flew four flights on British Airways within two weeks. I was unable to download the boarding pass to my phone for any of the four flights. I could check-in for my flight but the system would not give me boarding pass. I tried multiple ways and multiple times. I discovered many other passengers also had the same issue with their boarding passes. No explanation or acknowledgement by BA.

Lovely big plane. Excellent take off and landing. Cabin crew were so nice. Flight in time no delays

Because our ABZ-LHR flight was cancelled by BA for reasons they refuse to tell us--not weather--we did not make this flight and were booked on the following day. BA offered no assistance to us on the phone or in the airport, and we had to find a hotel at Heathrow on our own.

Horrible - flight was delayed by 6 hours - we boarded, were made to de-board due some technical fault; aircraft changed; special meals request on new flight - all went awry. Landed in Dulles airport; breezed thru immigration; as Business Class passengers or baggage was delivered almost 90 minutes after landing; air tags indicated the bags were just near the carousel but the unhelpful BA staff - Maria and Ghina refused to give any update - palming it off on some imaginary invisible “manager” despite air tags evidence showing it right there. So about 50-60 passengers waiting and getting infuriatingly impatient for their bags coz one container was not delivered. Finally after much argument by some other passengers Maria condescended to go to the “ramp” and within 5 minutes the baggage was delivered miraculously. Question is why couldn’t she have done it one hour earlier ? Poor poor experience once again on Business Class BA.

Cheap Flight Fares would not provide booking info. I canceled the reservation and we arbitrated with American Express. They provided erroneous info to Amex and it was determined that C.F.F. deserved the price of the ticket. Worse experience I've ever had.

Seating space is appalling. Seats and all surrounding area in "Economy" is built for individuals shorter than 4' 10" and below 120 lbs. Ridiculous. While I'm not expecting fine dining, the food was the worst airplane food that I can recall.

Business class lounge for my gate was closed and no email was sent, causing me to walk back and forth to different gates, etc for over 20 minutes one way. Flight entertainment was mediocre with very poor choices especially for business class cabin. Original flight was cancelled and rebooking was difficult and no reason given for cancellation.

Very comfortable flight and simple and directed one way and back. Amazing price.

We loved our flight attendant, Emma from Scotland, the meal and entertainment offerings were wonderful, the flight was smooth, and enough leg room to stretch. We would fly with you again!

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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.