Find cheap flights from Chicago to London

CHI - LON

Find cheap flights from Chicago to London

Round-trip
Economy
Chicago (CHI)
London All airports
Fri 8/7
Fri 8/14
Any month
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Good to know

Low season

February Best time to beat the crowds with an average 27% drop in price.

High season

December Most popular time to fly with an average 30% increase in price.

Average price of a round-trip

$529 (avg. price over the last 2 weeks)

Good deal for a round-trip

$484 or less

When to book flights from Chicago to London

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $439 or less.
  • The cheapest flight from Chicago to London was found 45 days before departure, on average.
  • Book at least 4 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is February.
  • Morning departure is around 50% cheaper than an evening flight, on average*.
  • Flights from Chicago to London usually depart from Chicago O’Hare International Airport and arrive at Heathrow or Gatwick airport in London. The average flight time for this route is 8 hours and 17 minutes.
  • Direct flights from Chicago to London can be booked through a number of airlines including Iberia, British Airways, American Airlines, and United. Non-stop flights are generally more expensive than flights with layovers.
  • The Public Art program at Chicago O’Hare showcases the creativity of the city to passengers passing through the terminals. Inspired by air travel, urban life, and Chicago’s beloved musicians, a diverse collection of paintings, murals, sculptures, and exhibits can be found throughout the airport terminals.
  • Plant lovers will enjoy visiting the Aeroponic Garden in Terminal 3 of Chicago Airport. This green space features 26 vertical towers and over a thousand plants that are grown without soil. A number of the airport’s restaurants including Tuscany Café and Tortas Frontera harvest fresh herbs, edible flowers, and varieties of lettuce that are used in their restaurants daily.
  • U.S. military personnel and their families are welcome to use the USO lounges in Terminals 2 and 3 of Chicago Airport. Open 24/7, facilities include travel and lodging information, refreshments, and lounges with television. US military travelers also receive a discount on food, shops, and facilities at Chicago O’Hare with a valid military ID.
  • If you want to stretch, meditate, or relax before your long flight to London, visit the dedicated Yoga Room in the T3 Rotunda. Spa outlets in the terminal also offer invigorating massages, manicures, and pedicures while you wait.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking Chicago to London flights

Which airlines have a flexible cancellation policy for flights from Chicago to London due to COVID-19?

How long does a flight from Chicago to London take?

How many flights are there between Chicago and London?

Which airlines provide the cheapest flights from Chicago to London?

Do I need a passport to fly between Chicago and London?

Which airlines fly most frequently between Chicago and London?

What’s the cheapest day of the week to fly from Chicago to London?

Which airports will I be using when flying from Chicago to London?

Which airport should I fly into in London?

Where can I get a meal at Chicago O’Hare?

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I’m traveling with a baby. What kind of facilities are available?

How does KAYAK find such low prices on flights from Chicago to London?

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

What is the Hacker Fare option on flights from Chicago to London?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to London?

Top {4} airlines serving from Chicago to London

Scores according to KAYAK customer reviews

7.3
Icelandair
Overall score based on 9,380 reviews
7.2
Boarding
7.3
Comfort
8.1
Crew
7.6
Entertainment
6.2
Food
Airline reviews
Read more about Icelandair

Book cheap flights from Chicago to London

Recent round-trip flight deals

10/24
Sat
2 stops
Multiple Airlines
20h 05m
ORD - LGW
2/17
Wed
2 stops
Multiple Airlines
22h 40m
LGW - ORD
12/8
Tue
1 stop
TAP AIR PORTUGAL
11h 55m
ORD - LGW
12/14
Mon
1 stop
TAP AIR PORTUGAL
27h 45m
LGW - ORD
10/12
Mon
1 stop
Icelandair
10h 35m
ORD - LGW
10/23
Fri
1 stop
Icelandair
11h 15m
LGW - ORD
12/1
Tue
1 stop
Aer Lingus
12h 25m
ORD - LCY
12/31
Thu
1 stop
Aer Lingus
13h 20m
LCY - ORD
11/12
Thu
1 stop
KLM
10h 35m
MDW - LHR
11/19
Thu
1 stop
KLM
14h 30m
LHR - MDW
11/1
Sun
1 stop
Delta
13h 11m
MDW - LHR
11/19
Thu
2 stops
Delta
15h 54m
LHR - MDW
12/1
Tue
1 stop
SWISS
11h 30m
ORD - LCY
12/15
Tue
1 stop
SWISS
12h 25m
LCY - ORD
9/21
Mon
1 stop
Virgin Atlantic
11h 20m
MDW - LHR
9/29
Tue
1 stop
Virgin Atlantic
14h 50m
LHR - MDW
11/17
Tue
2 stops
Multiple Airlines
21h 20m
ORD - LGW
12/3
Thu
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Multiple Airlines
23h 25m
LGW - ORD
12/2
Wed
2 stops
Multiple Airlines
22h 55m
ORD - LHR
12/5
Sat
2 stops
Multiple Airlines
25h 10m
LHR - ORD
9/12
Sat
1 stop
Aeromexico
12h 30m
MDW - LHR
10/4
Sun
1 stop
Aeromexico
14h 24m
LHR - MDW
11/10
Tue
1 stop
TAP AIR PORTUGAL
17h 50m
ORD - LGW
11/18
Wed
1 stop
TAP AIR PORTUGAL
27h 45m
LGW - ORD
10/18
Sun
1 stop
Icelandair
19h 00m
ORD - LGW
10/23
Fri
1 stop
Icelandair
11h 15m
LGW - ORD
12/2
Wed
2 stops
Multiple Airlines
21h 20m
ORD - LGW
12/5
Sat
2 stops
Multiple Airlines
24h 45m
LGW - ORD
11/10
Tue
1 stop
TAP AIR PORTUGAL
23h 40m
ORD - LHR
11/18
Wed
1 stop
TAP AIR PORTUGAL
25h 50m
LHR - ORD
10/13
Tue
1 stop
Icelandair
10h 20m
ORD - LGW
11/18
Wed
1 stop
Icelandair
11h 30m
LGW - ORD
10/24
Sat
2 stops
Multiple Airlines
20h 05m
ORD - LGW
11/1
Sun
3 stops
Multiple Airlines
41h 33m
LGW - ORD
12/1
Tue
1 stop
TAP AIR PORTUGAL
17h 50m
ORD - LGW
12/31
Thu
1 stop
TAP AIR PORTUGAL
27h 45m
LGW - ORD
10/13
Tue
1 stop
Icelandair
10h 20m
ORD - LGW
10/20
Tue
1 stop
Icelandair
11h 15m
LGW - ORD
10/24
Sat
2 stops
Multiple Airlines
20h 05m
ORD - LGW
10/28
Wed
2 stops
Multiple Airlines
24h 25m
LGW - ORD
Show more results

Recent one-way flight deals

7/31
Fri
2 stops
Multiple Airlines
19h 07m
ORD - LHR
8/17
Mon
3 stops
Multiple Airlines
22h 25m
ORD - LHR
8/24
Mon
3 stops
Multiple Airlines
27h 25m
ORD - LHR
10/13
Tue
1 stop
British Airways
12h 25m
ORD - LCY
9/15
Tue
2 stops
Multiple Airlines
40h 00m
ORD - LHR
8/16
Sun
3 stops
Multiple Airlines
41h 05m
ORD - LHR
9/5
Sat
2 stops
Multiple Airlines
45h 05m
ORD - LHR
8/20
Thu
3 stops
Multiple Airlines
46h 35m
ORD - LTN
9/12
Sat
1 stop
Aeromexico
12h 30m
MDW - LHR
9/8
Tue
2 stops
Multiple Airlines
40h 00m
ORD - LHR
10/14
Wed
1 stop
British Airways
12h 25m
ORD - LCY
8/20
Thu
3 stops
Multiple Airlines
44h 15m
ORD - LGW
10/12
Mon
1 stop
British Airways
15h 00m
ORD - LCY
8/20
Thu
3 stops
Multiple Airlines
45h 00m
ORD - STN
9/7
Mon
3 stops
Multiple Airlines
27h 25m
ORD - LHR
9/12
Sat
3 stops
Multiple Airlines
26h 30m
ORD - LHR
9/7
Mon
1 stop
British Airways
22h 05m
ORD - LCY
8/20
Thu
3 stops
Multiple Airlines
44h 35m
ORD - LHR
7/26
Sun
1 stop
British Airways
11h 30m
ORD - LCY
Show more results
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
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