$332 Find Cheap Flights from the United Kingdom to Chicago - Compare and Save

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 8/19. 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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1 adult, Economy, 0 bags

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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 3 - Wed, Sep 16
Multiple Airlines Logo
3:10 pm - 6:15 pm
EDI
-
ORD
33h 05m
2 stops
Multiple Airlines Logo
7:25 pm - 12:20 am
ORD
-
EDI
22h 55m
2 stops
$568Multiple Airlines
Wed, Aug 26 - Sun, Aug 30
Multiple Airlines Logo
7:20 am - 4:57 pm
EDI
-
ORD
39h 37m
3 stops
Multiple Airlines Logo
7:25 pm - 5:00 pm
ORD
-
EDI
15h 35m
2 stops
$589Multiple Airlines
Tue, Oct 6 - Sat, Oct 10
TAP AIR PORTUGAL Logo
6:05 pm - 4:00 pm
MAN
-
ORD
27h 55m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 10:05 am
ORD
-
MAN
34h 00m
1 stop
$649TAP AIR PORTUGAL
Mon, Nov 2 - Sun, Nov 8
TAP AIR PORTUGAL Logo
9:35 pm - 3:30 pm
LGW
-
ORD
47h 55m
2 stops
TAP AIR PORTUGAL Logo
8:10 pm - 3:45 pm
ORD
-
LGW
13h 35m
1 stop
$694TAP AIR PORTUGAL
Wed, Sep 23 - Mon, Dec 7
Icelandair Logo
1:05 pm - 6:15 pm
LHR
-
ORD
11h 10m
1 stop
Icelandair Logo
6:30 pm - 7:30 pm
ORD
-
LHR
19h 00m
1 stop
$699Icelandair
Wed, Sep 9 - Mon, Sep 14
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
$701Icelandair
Thu, Sep 3 - Wed, Sep 16
Scandinavian Airlines Logo
7:05 am - 4:10 pm
LHR
-
ORD
15h 05m
2 stops
Scandinavian Airlines Logo
7:15 pm - 6:30 pm
ORD
-
LHR
17h 15m
1 stop
$702Scandinavian Airlines
Thu, Sep 3 - Wed, Sep 16
Scandinavian Airlines Logo
6:40 am - 4:10 pm
LHR
-
ORD
15h 30m
1 stop
Scandinavian Airlines Logo
7:15 pm - 6:30 pm
ORD
-
LHR
17h 15m
1 stop
$703Scandinavian Airlines
Mon, Sep 7 - Mon, Sep 21
SWISS Logo
9:15 am - 3:55 pm
LCY
-
ORD
12h 40m
1 stop
SWISS Logo
7:05 pm - 12:35 pm
ORD
-
LCY
11h 30m
1 stop
$770SWISS
Wed, Sep 30 - Mon, Oct 5
SWISS Logo
9:15 am - 3:55 pm
LCY
-
ORD
12h 40m
1 stop
SWISS Logo
7:05 pm - 12:35 pm
ORD
-
LCY
11h 30m
1 stop
$771SWISS
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 Tuesday where round-trip tickets can be as cheap as $917. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $1,042 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 $636 on average for return flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from the United Kingdom is $972 and $959 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 $912 on average. The most expensive time of day to fly to Chicago is generally in the morning, which is peak travel time and where the average cost of a ticket is $946.

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 Edinburgh $853 round-trip, from London Heathrow Airport $865 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 29% 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 $141.

Good to know

Low seasonJanuary
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 8% lower on average.

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 $968. The cheapest price found on KAYAK in the last 2 weeks cost $536 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 $859 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.

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.