$378 Find Cheap Flights from the United Kingdom to Chicago - 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 the United Kingdom to Chicago

 
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, Nov 19 - Mon, Nov 23
Multiple Airlines Logo
6:15 pm - 5:20 pmMAN  Manchester-ORD Chicago O'Hare Intl
29h 05m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
Multiple Airlines Logo
6:30 pm - 10:40 pmORD  Chicago O'Hare Intl-MAN Manchester
22h 10m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
$656Multiple Airlines
Fri, Jan 8 - Tue, Jan 12
Multiple Airlines Logo
6:55 am - 5:20 pmMAN  Manchester-ORD Chicago O'Hare Intl
16h 25m2 stops Dublin Reykjavik Keflavik Intl
Multiple Airlines Logo
6:30 pm - 1:40 pmORD  Chicago O'Hare Intl-MAN Manchester
13h 10m2 stops Reykjavik Keflavik Intl Dublin
$668Multiple Airlines
Fri, Nov 20 - Sat, Nov 21
United Airlines Logo
6:10 am - 2:40 pmMAN  Manchester-ORD Chicago O'Hare Intl
38h 30m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl
United Airlines Logo
6:15 pm - 8:45 amORD  Chicago O'Hare Intl-MAN Manchester
32h 30m2 stops Atlanta Hartsfield-Jackson Toronto Pearson Intl
$672United Airlines
Thu, Nov 19 - Mon, Nov 30
British Airways Logo
11:00 am - 1:45 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
8h 45mnonstop
British Airways Logo
9:50 pm - 11:35 amORD  Chicago O'Hare Intl-LHR London Heathrow
7h 45mnonstop
$691British Airways
Thu, Dec 3 - Fri, Dec 11
TAP AIR PORTUGAL Logo
4:00 pm - 3:30 pmLGW  London Gatwick-ORD Chicago O'Hare Intl
29h 30m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
8:10 pm - 8:20 amORD  Chicago O'Hare Intl-LGW London Gatwick
30h 10m2 stops Lisbon Humberto Delgado Porto
$692TAP AIR PORTUGAL
Mon, Nov 23 - Fri, Nov 27
British Airways Logo
11:00 am - 1:45 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
8h 45mnonstop
British Airways Logo
5:10 pm - 6:55 amORD  Chicago O'Hare Intl-LHR London Heathrow
7h 45mnonstop
$694British Airways
Mon, Nov 9 - Wed, Nov 18
TAP AIR PORTUGAL Logo
9:35 pm - 3:30 pmLGW  London Gatwick-ORD Chicago O'Hare Intl
47h 55m2 stops Porto Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
7:00 pm - 3:05 pmORD  Chicago O'Hare Intl-LGW London Gatwick
14h 05m1 stop Lisbon Humberto Delgado
$695TAP AIR PORTUGAL
Fri, Nov 6 - Sat, Nov 7
United Airlines Logo
1:45 pm - 4:15 pmLHR  London Heathrow-ORD Chicago O'Hare Intl
32h 30m1 stop Zurich
United Airlines Logo
6:17 pm - 8:30 amORD  Chicago O'Hare Intl-LHR London Heathrow
32h 13m1 stop Toronto Pearson Intl
$697United Airlines
Fri, Nov 6 - Thu, Nov 12
Aer Lingus Logo
9:10 am - 6:20 pmBHX  Birmingham-ORD Chicago O'Hare Intl
15h 10m1 stop Dublin
Aer Lingus Logo
3:55 pm - 10:50 amORD  Chicago O'Hare Intl-BHX Birmingham
12h 55m1 stop Dublin
$738Aer Lingus
Wed, Nov 11 - Wed, Nov 18
Aer Lingus Logo
8:10 am - 2:10 pmMAN  Manchester-ORD Chicago O'Hare Intl
12h 00m1 stop Dublin
Aer Lingus Logo
3:55 pm - 7:35 amORD  Chicago O'Hare Intl-MAN Manchester
9h 40m1 stop Dublin
$741Aer Lingus
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?

Based on KAYAK data, the cheapest day to fly to Chicago is Friday where round-trip tickets can be as cheap as $909. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $1,137 on average.

What is the cheapest month to fly to Chicago?

The cheapest month for flights to Chicago is February, where tickets cost $677 on average for return flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from the United Kingdom is $1,077 and $1,057 respectively. For one-way flights, the best month to travel is September with an average price of $656.

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

The cheapest time of day to fly to Chicago is generally in the afternoon, when round-trip flights cost $925 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 $1,023.

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 $823 round-trip.

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

To get a below average price, you should book around 5 weeks before departure, which saves you about 24% 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 $126.

Good to know

Low season

January

Cheapest flight

$378
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Edinburgh 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-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.

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 $1,016. The cheapest price found on KAYAK in the last 2 weeks cost $559 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 $802 or less one-way and $823 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

 
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 1859 reviews
7.1Entertainment
6.7Food
7.5Boarding
7.2Comfort
8.1Crew
Airline reviews

Still some confusion about my baggage which was disconcerting. It was nice that there was extra space on the flight for comfort reasons. Staff very friendly

8.0 ExcellentAna, Oct 2026
Read more Aer Lingus reviews

Still some confusion about my baggage which was disconcerting. It was nice that there was extra space on the flight for comfort reasons. Staff very friendly

The plane from Venice to Dublin ran out of food. They did not restock the plane in Venice.

The crew was first rate. They allowed me to switch my middle seat to an isle seat and it made my flight home so much more comfortable.

Very comfortable flight. Great service, food options, and entertainment options. With Wi-Fi!

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

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.

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

The same as I stated prior. We incurred extra costs that should be reimbursed, given we were not communicated with about schedule changes.

My flight from Dublin was delayed two hours which ment that I missed my connecting flight to Phoenix. American Airlines provided a hotel room and rebooked my flight for 7:30 AM the next day. I didn't get to the room until 11 pm and I had to be at the airport the next day by 5 AM. The airlines did their best but the schedule was challenging for an 81 year old.

The Code Share with Air Canada was not very streamlined. I had to check in at airport (not online) on the outbound and return flights

Stored my cloth purse under seat in front off me as instructed. When I retrieved it, half of it was soaked, along with everything inside it. I don’t really know how that could have been prevented because the area did not look wet, but I was not happy about it.

Phx - ORD was nice 737 with starlink and the ORD - grr was ancient bare bones airbus with not even a power port lol

It was easy to board, and the staff was friendly and helpful. What could have been better is that I shouldn't have to pay extra for a seat that doesn't recline.

Was on the plane sitting longer than the actual flight in air was, boarded at 5:45p and didn't take off until 6:50p flight was only about 30 minutes long. Just was poor experience will booking more with American Airlines.

The couple in front of me were constantly talking over the announcement from the captain and this was annoying me.

The first leg of my trip the Republic Airlines aircraft was late due to a maintenance problem. Then I called United to reroute. Their reroute airline lost my bag but found it and returned it two days later. Hopefully my return trip home is better.

There was not even a single time where united airlines from lga has made to the gate straight , 1 hr if delay today

United has come a long way, it’s been a fantastic experience traveling with them.

Late start, late arrival and very uncomfortable seating. If they schedule a takeoff at a specific time, how can they not know the traffic at the airport will be heavy and delay flights at that time? I paid for legroom but when seated next to an oversized person, I had no elbow room. Also, who wants to rub hips with a large stranger for over 2 hours? I ended up leaning toward the aisle the entire flight and being bumped every time someone passed by. Paying for legroom should include side-to-side space, too. This happened on both domestic flights I had within the past 2 weeks.

Flight was ok but the food was poor, and the business chairs were not comfortable.

Great experience in Saga Premium. Food was tasty and felt fresh. Seat was comfortable (enough) - would have wanted a layflat seat.

The flight itself was excellent, but getting to the plane was literally an exercise in pain. My wife needs a wheelchair and can only stand/walk for short periods before having extreme pain. We had to take a bus to a loading platform and use a terrible elevator to get up to the plane. Meanwhile the rest of the bus were using the stairs. This meant the people who needed to sit down were stuck standing at the end of the line while everyone else boarded. My wife was in agony.

It was amazing. I sat in First Class as a Saga Premium member, and my service was top notch. It was wonderful. I only recently joined Saga Club since I do travel to Scandinavia often and enjoy flying through Reykjavik on Iceland Air versus other ways of travelling to Europe. This was my first trip sitting in first class, which I honestly wasn’t expecting!

There were no places to sit at the gate. Most people had to sit on the floor or stand waiting for the gate to open and board. We were told we needed passport and the person hardly looked at them. Maybe for 2 seconds. No announcement made asking to board by row or group. On a 5.5 hour flight the crew only came through the cabin 2 times offering water and buy everything else. For the price of the ticket at least offer free soda! The airliner was very comfortable

Crew was wonderful. I knew going in that the seats were not lie-flat in business class, but they reclined less than I expected. To save on waste, you have to ask for which pieces of the amenity kit you are interested in, which they will gladly give to you. Flight was fairly short, so no issues. I did have one piece of luggage not show up at terminal on landing. They were great about looking for it. Found it...it actually did make the flight and was listed as "not picked up" (?????--we stayed over an hour looking for it, including in the odd-sized baggage claim.) Since "not picked up" they will not ship to my house and I have to go back to airport, which is in another town. I probably could have pressed this issue, but headed back to airport for another flight anyway, so will pick up then.

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

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

We had to be bussed to the plane. And it was raining. Not a pleasant experience.

roomiest flight in economy I've taken in years. Excellent experience!

I was booked to travel from Dallas to Nairobi via Chicago and Brussels and had been issued boarding passes for all three segments of my journey. At the boarding gate in Dallas, I was required to check my carry-on luggage due to limited cabin space. Despite my attempts to explain that I was traveling internationally and would not have access to the bag during transit, my concerns were not considered. I also informed the staff that I did not have a padlock to secure the luggage, but this was disregarded. Consequently, I had to hastily transfer essential items from my carry-on into my handbag. To my surprise, upon arriving at Chicago Airport, I observed numerous international travelers boarding with cabin bags that were significantly larger than mine. This experience left me extremely disappointed and led me to decide against using United Airlines for future international travel, a sentiment I have also shared with friends and family. Unfortunately, the onboard experience on the Chicago to Brussels flight further reinforced my dissatisfaction. The cabin crew appeared disengaged, indifferent, and lacking in attentiveness, resulting in a service experience that fell well below my expectations.

I want to highlight the crew members and their excellent work and professionalism. They work hard to make a long trip the most comfortable as possible, the food and drinks they offer are pretty good. And they are always asking if you need something else. I have had experiences with other airlines where you have to basically beg for a bottle of water. This is not the case. Highly recommended!!!

the blanket was great and pillow helped. really need a toothpick packed with meals

Very comfortable plane. The food was very good (for airplane food). The crew was great

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

need more US friendly food options. Directions on getting to the next gate were terrible - resulted in long walks to the terminal and then finding I couldn;t enter there and had long walk back, then train to security then train back to where I started in the first place

I will never want to book with these people. They are arrogant and rude. Food was really really bad, crew was even worst

Check-in experience, for business call please provide a premium experience

Everything. Employees offered to help me because I had to use a cane.

Unfortunately, my flight was cancelled because of some sort of emergency over the Atlantic and had to return to London. While I think British Airways made every effort to mitigate the situation, I must say it was still pretty unpleasant. I do appreciate the fact, however, that British Airways put my safety first…and I think the effort to correct a bad situation was very sincere. But I think the process might be handled better in future.

The seat pads are past there sell by date now and are uncomfotable. Also, with screens in the back of the seat, the seats shouldnt be able to recline as this puts rhe screen in your face.

As I have said it sucked, the ticket counter to have to find and pay for another airline to get home. Now I understand this happened over the weekend but they should have someone there to talk to us instead of throwing the regular crew under the bus.

Not so good with their baggage handling as they damaged one of my check in luggage

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Hammond
Saint Joseph
Portage
Lansing
Valparaiso
Munster
Chesterton
Schererville
Porter
Monticello
Saint John
Griffith

More options for your flight to Chicago