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$311+ Cheap flights from Chicago (CHI) to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LON
Aug 5 — Aug 121
Wed 8/5
Wed 8/12
1 adult, Economy
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Find cheap flights from Chicago to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Chicago to London are usually found in September or February, booked 73 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Chicago to London

Cheapest flights from Chicago to London
Explore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 6, 2026.

This Mytrip deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/193:45 pm
ORD
-
LTN
1 stop11h 15m
Multiple Airlines
Wed 8/266:15 am
LTN
-
ORD
2 stops19h 37m
Multiple Airlines
Deal found 7/5$856
This FlightHub deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:15 pm
ORD
-
LHR
1 stop16h 25m
Scandinavian Airlines
Sun 10/189:05 pm
LHR
-
ORD
2 stops25h 05m
Scandinavian Airlines
Deal found 7/1$865
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:30 pm
ORD
-
LGW
2 stops15h 50m
Multiple Airlines
Mon 11/3011:55 am
LGW
-
ORD
1 stop11h 25m
Multiple Airlines
Deal found 7/2$865
This Mytrip deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:00 pm
ORD
-
STN
1 stop11h 15m
Multiple Airlines
Mon 10/198:15 am
STN
-
ORD
2 stops16h 00m
Multiple Airlines
Deal found 7/1$865
This Mytrip deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/123:45 pm
ORD
-
LHR
1 stop10h 20m
Aer Lingus
Wed 8/191:25 pm
LHR
-
ORD
1 stop11h 50m
Aer Lingus
Deal found 7/2$866
This Virgin Atlantic deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:35 am
MDW
-
LHR
1 stop19h 05m
Virgin Atlantic
Wed 11/186:30 am
LHR
-
MDW
2 stops15h 55m
Virgin Atlantic
Deal found 7/1$866
This Gotogate deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:10 pm
ORD
-
STN
1 stop20h 00m
Turkish Airlines
Mon 10/1910:50 am
STN
-
ORD
1 stop28h 50m
Turkish Airlines
Deal found 7/1$866
This Flightnetwork deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:25 pm
ORD
-
LGW
1 stop10h 15m
Icelandair
Sun 10/252:40 pm
LGW
-
ORD
1 stop32h 40m
Icelandair
Deal found 7/1$867
This oojo deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:35 pm
ORD
-
STN
1 stop12h 35m
Lufthansa
Mon 10/54:25 pm
STN
-
ORD
1 stop31h 50m
Lufthansa
Deal found 7/1$867
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:25 pm
ORD
-
LHR
Nonstop8h 20m
United Airlines
Wed 9/306:50 am
LHR
-
ORD
1 stop11h 10m
United Airlines
Deal found 7/1$868
This Trip.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:00 pm
ORD
-
LGW
1 stop14h 00m
TAP AIR PORTUGAL
Wed 8/264:25 pm
LGW
-
ORD
1 stop26h 15m
TAP AIR PORTUGAL
Deal found 7/1$868
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/234:25 pm
ORD
-
LHR
Nonstop8h 20m
United Airlines
Wed 10/77:25 am
LHR
-
ORD
1 stop12h 40m
United Airlines
Deal found 7/2$869

Find flight deals from Chicago to London

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$856
(Mytrip)

One-way from

$311
(Mytrip)

Popular in

June

Cheapest in

September

Average price

$964

Good round-trip deal

$1,019 or less

Good one-way deal

$430 or less
Provider with most accurate pricing for Chicago (CHI)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-London (LON) flights.
Search Deals
From Chicago (CHI) to London (LON)
Search Deals
One-way flight from Chicago (CHI) to London (LON)
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($289 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to London (LON).
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 6, 2026.
Use the filters below to find and compare flights from Chicago to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 10/14

8:10 pm-10:10 pm

1 stop20h 00m

London Stansted

Mon 10/19

10:50 am-6:15 pm

1 stop37h 25m

$873

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 8/16

6:00 pm-8:25 pm

2 stops20h 25m

London Gatwick

Wed 8/26

9:15 pm-12:40 pm

2 stops21h 25m

$878

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 11/16

9:50 pm-12:00 pm

Nonstop8h 10m

London Heathrow

Thu 11/19

7:40 am-10:45 am

Nonstop9h 05m

$879

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Tue 10/13

10:24 am-9:25 am

2 stops17h 01m

London Gatwick

Tue 10/20

5:00 pm-3:10 pm

1 stop28h 10m

$879

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 10/28

12:45 pm-4:20 pm

1 stop22h 35m

London Stansted

Tue 11/3

5:20 pm-7:20 pm

1 stop32h 00m

$882

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Fri 9/18

4:55 pm-11:50 am

1 stop12h 55m

London Luton

Wed 10/7

6:05 am-5:50 pm

2 stops17h 45m

$891

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Thu 9/17

8:10 pm-4:50 pm

1 stop38h 40m

London Stansted

Sat 9/26

10:50 am-9:40 am

1 stop28h 50m

$893

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 9/16

11:25 am-10:10 pm

1 stop28h 45m

London Stansted

Sat 9/26

5:45 pm-9:40 am

1 stop21h 55m

$893

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sat 9/26

3:45 pm-8:20 am

1 stop10h 35m

London Luton

Sat 10/10

9:00 am-2:00 pm

1 stop11h 00m

$897

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 12/11

3:45 pm-5:55 am

Nonstop8h 10m

London Heathrow

Thu 12/17

11:10 am-6:25 pm

1 stop13h 15m

$900

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 60 resultsSorted by cheapest first
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Compare providers for flights from Chicago to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to London in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
BusinessClassPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to London

Have a flexible travel schedule? Discover the best time to fly to London from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to London

What is the cheapest month to book a flight from Chicago to London?

Currently, November is the cheapest month in which you can book a flight from Chicago to London (average of $654). Flying from Chicago to London in February is currently the most expensive (average of $1,583). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to LON?

Find hourly flight availability from Chicago to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 6, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago to London as you normally would.

Weekly flight availability from Chicago to London

Explore weekly flight availability from Chicago to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 6, 2026.

The most flights from CHI to LON are scheduled on a Monday (58 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (41 on average).

How much does it cost to fly round-trip from Chicago to London?

What’s the top layover airport for flights from Chicago to London?

Share of 1-stop round-trip flights from Chicago to London chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 45% of 1-stop itineraries from Chicago to London on Cheapflights.

What’s the cheapest layover airport for flights from Chicago to London?

Average round-trip fare for 1-stop flights from Chicago to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $478.

What’s the fastest layover option from Chicago to London?

Shortest average travel time for 1-stop one-way flights from Chicago to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 10h 20m.

Which airport typically offers the quickest layover for flights from Chicago to London?

Average layover duration for 1-stop one-way flights from Chicago to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 0h 58m.

How often are flights from Chicago to London delayed?

About 24% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 170 minutes.

What is the most punctual flight time for Chicago to London flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Chicago to London flights?

Over the last year, British Airways have had the lowest number of delays on this route, with just 23% of flights being delayed.

How far ahead should I book a flight from Chicago to London?

The best time to book flights from Chicago to London is 32 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

The best insider tips for Chicago to London flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago to London trip
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Emily Zemler

Emily Zemler

Expert on Iberia

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on ORD and LHR

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated July 6, 2026.
See what other customers who have flown with United Airlines,American Airlines, andIcelandair from Chicago to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,939 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
United Airlines
7.4
Good
9,939 reviews
United Airlines
7.4
Good
9,939 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
American Airlines
7.1
Good
11,783 reviews
United Airlines
7.4
Good
9,939 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
Icelandair
7.0
Good
702 reviews
United Airlines
7.4
Good
9,939 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
Iberia
7.0
Good
3,247 reviews
United Airlines
7.4
Good
9,939 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
British Airways
6.7
Okay
8,096 reviews
United Airlines
7.4
Good
9,939 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!

Related info for your journey

Find useful and relevant information for your journey from Chicago to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to London?

    Departing from Chicago to London will take you 8h 10m. There are 3939 mi between Chicago and London. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Chicago to London round-trip?

    JetBlue, at $51, was found to be the cheapest airline from Chicago to London.Alternate airlines to your destination round-trip include Scandinavian Airlines and TAP AIR PORTUGAL. JetBlue is 93% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Chicago to London one-way?

    $135 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Icelandair and Finnair, with prices starting from $229 and $279, respectively.

  • What are the most popular routes from Chicago to London?

    The most popular route from Chicago to London is Chicago O'Hare Intl - London Heathrow. You may also consider Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London Stansted.

  • What are the most reliable airlines from Chicago to London?

    Before booking your flight to London from Chicago, check out the most reliable airlines to get you to your destination on time: SriLankan Airlines (74%), Gulf Air (69%), Malaysia Airlines( 69%).

  • What are the cheapest flights from Chicago to London?

    Looking at all options, your cheapest flight can be booked for $324. While the most popular route (Chicago O'Hare Intl - London Heathrow) can be booked for $595 on average, our data indicates $3,577 when flying from Chicago to London.

  • Where are the most common layover locations when flying from Chicago to London?

    Of the flights from Chicago to London that have layovers, most of them stop in Reykjavik.

  • What are some popular things to do or see while on a layover in Reykjavik?

    Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are the most popular attractions in Reykjavik if you're in need of something to do during your layover. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are located about 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers can book a car rental at Reykjavik Keflavik Intl for about $78 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Chicago to London flights?

    Chicago to London flights have a layover in Dublin least often.

  • Can I find deals for flights from Chicago to London that include hotel bookings?

    Yes. In addition to deals on Chicago to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to London.

  • Can I find deals for business class flights from Chicago to London?

    Yes. Cheapflights offers flight deals from Chicago to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to London?

    Currently, November is the cheapest month in which you can book a flight from Chicago to London (average of $654). Flying from Chicago to London in February is currently the most expensive (average of $1,583). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Ilford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Stansted

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from Chicago to London

Discover the top 10 airlines that operate flights from Chicago to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$81FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$384Average$595FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$428Average$713FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$430Average$542FlexibilityNo cancel feeOn-time76%
SWISSCheapest$458Average$786FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$513Average$827FlexibilityNo cancel feeOn-time70%
FinnairCheapest$516Average$827FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$522Average$809FlexibilityNo cancel feeOn-time75%
IberiaCheapest$527Average$771FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$572Average$826FlexibilityNo cancel feeOn-time69%

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