How long is the flight from London to Chicago?

A quick flight from London to Chicago can take about 11h 10m. TAP AIR PORTUGAL provides one of the quickest options available for as low as £555. Airlines will cover a distance of 3939 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

Our cheapest airline available from London to Chicago is Virgin Atlantic. Our recent data shows that you can find tickets from as low as £298 on this airline. Additional options worth looking into are Icelandair and Scandinavian Airlines, starting at £349 and £370 round-trip. These flights start at 49% lower than the current average price 3 months from now.

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

To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at £306. Aer Lingus flights start at £314 while deals on Icelandair start at £320 one-way.

In terms of precipitation, rainfall in Chicago ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What are the most popular routes from London to Chicago?

The most popular flight routes from London to Chicago are London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl and London City - Chicago O'Hare Intl.

What are the cheapest flights from London to Chicago?

While on average a flight from London to Chicago is generally £2,952, our data shows the cheapest flight currently is £404. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £422 for that flight.

What are the most reliable airlines from London to Chicago?

Before booking your flight to Chicago from London, check out the most reliable airlines to get you to your destination on time: Air Canada (88%), Austrian Airlines (88%), United Airlines( 88%).

What are the most popular airlines that fly from London to Chicago?

Before booking your flight from London to Chicago check out the most popular airlines for this route: British Airways, Lufthansa or Icelandair.

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

London to Chicago flights have a stopover in Dublin most of the time.

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

London to Chicago flights have a stopover in Reykjavik least often.

What are some popular things to do or see while on a stopover in Dublin?

If you're on a stopover in Dublin and looking for things to do, consider visiting 3Olympia Theatre, Bord Gáis Energy Theatre, or Vicar Street. 3Olympia Theatre, Bord Gáis Energy Theatre, and Vicar Street are located about 5.7 mi, 5.7 mi, and 5.9 mi, respectively from Dublin. Those on a stopover in Dublin in need of a car hire can book one at Dublin for about £28.

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

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

How can I find direct flights from London to Chicago?

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

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

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

£342+ Cheap Flights from London to Chicago

Cheapflights Tip: The best prices from London to Chicago are usually found in February or January, booked 42 days in advance, depart on a Thursday or Friday and return on a Monday

Cheap flight deals from London to Chicago

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from London to Chicago
Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2026.

Mon 12/1006:30 -

1 stop13h 30m

Mon 19/1021:00 -

1 stop18h 20m

Deal found 21/8£466

Wed 16/912:10 -

1 stop30h 25m

Fri 18/910:50 -

1 stop14h 05m

Deal found 21/8£467

Mon 12/1009:45 -

1 stop15h 30m

Mon 19/1021:00 -

1 stop17h 55m

Deal found 21/8£468

Tue 8/912:10 -

1 stop33h 45m

Thu 10/914:30 -

1 stop10h 25m

Deal found 22/8£468

Wed 14/1008:50 -

1 stop16h 25m

Sun 18/1015:45 -

1 stop10h 10m

Deal found 22/8£469

Sun 20/909:00 -

1 stop16h 15m

Sun 27/915:45 -

1 stop13h 40m

Deal found 23/8£469

Wed 18/1107:15 -

1 stop17h 10m

Tue 24/1120:10 -

1 stop19h 40m

Deal found 22/8£469

Thu 17/916:35 -

1 stop29h 25m

Sat 26/918:05 -

1 stop12h 40m

Deal found 21/8£470

Thu 17/906:30 -

1 stop13h 30m

Mon 21/915:45 -

1 stop10h 05m

Deal found 23/8£470

Wed 2/922:00 -

1 stop22h 00m

Tue 22/921:00 -

1 stop12h 10m

Deal found 21/8£471

Wed 16/908:00 -

1 stop14h 00m

Sun 18/1018:00 -

1 stop12h 45m

Deal found 23/8£471

Sun 20/906:35 -

1 stop18h 40m

Sun 27/915:45 -

1 stop10h 05m

Deal found 23/8£471

Best flights from London to Chicago
Discover carefully curated flight deals from London to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Tue 22/919:50 -

1 stop26h 10m

Wed 21/1018:00 -

1 stop17h 45m

Deal found 22/8£477

Mon 21/912:25 -

3 stops33h 45m

Mon 5/1019:15 -

2 stops21h 35m

Deal found 22/8£491

Tue 22/906:50 -

1 stop11h 10m

Wed 21/1021:30 -

Nonstop8h 25m

Deal found 24/8£555

Tue 6/1007:05 -

2 stops15h 05m

Tue 13/1019:15 -

1 stop14h 45m

Deal found 22/8£574

Tue 6/1014:45 -

Nonstop8h 50m

Tue 13/1020:50 -

Nonstop8h 00m

Deal found 22/8£628

Mon 21/906:30 -

1 stop14h 00m

Mon 5/1015:55 -

1 stop15h 10m

Deal found 24/8£631

Tue 17/1106:30 -

2 stops16h 09m

Tue 1/1211:28 -

1 stop14h 22m

Deal found 23/8£635

Thu 1/1009:15 -

1 stop12h 40m

Mon 5/1015:50 -

1 stop14h 45m

Deal found 23/8£644

Wed 7/1010:50 -

1 stop28h 50m

Wed 14/1011:25 -

1 stop23h 15m

Deal found 23/8£668

Wed 9/912:25 -

1 stop11h 54m

Wed 23/913:00 -

1 stop11h 25m

Deal found 25/8£713

Sat 26/910:45 -

1 stop13h 37m

Sat 3/1019:13 -

1 stop11h 52m

Deal found 25/8£716

Wed 21/1006:15 -

1 stop13h 45m

Thu 29/1021:10 -

1 stop9h 50m

Deal found 23/8£494

Tue 22/916:25 -

1 stop29h 35m

Wed 21/1018:00 -

2 stops20h 30m

Deal found 22/8£526

Fri 20/1109:00 -

1 stop15h 25m

Sun 29/1115:55 -

1 stop11h 15m

Deal found 22/8£522

Fri 18/921:05 -

2 stops25h 05m

Mon 21/919:15 -

2 stops15h 45m

Deal found 22/8£581

Wed 9/906:50 -

1 stop11h 10m

Wed 23/921:30 -

Nonstop8h 25m

Deal found 25/8£619

Fri 22/121:35 -

2 stops47h 55m

Fri 29/120:10 -

2 stops30h 10m

Deal found 23/8£581

Tue 6/1006:15 -

2 stops15h 59m

Tue 13/1009:29 -

2 stops15h 16m

Deal found 22/8£640

Sat 17/1019:45 -

2 stops26h 25m

Sun 25/1020:15 -

2 stops17h 05m

Deal found 25/8£530

Tue 22/910:35 -

2 stops18h 09m

Tue 29/910:48 -

2 stops16h 37m

Deal found 23/8£651

Fri 11/1207:05 -

2 stops15h 40m

Wed 30/1219:15 -

2 stops17h 35m

Deal found 22/8£593

Wed 9/909:25 -

1 stop12h 30m

Thu 17/914:20 -

1 stop12h 05m

Deal found 21/8£658

Thu 8/1017:35 -

1 stop22h 05m

Tue 13/1011:25 -

1 stop23h 25m

Deal found 22/8£669

Fri 11/906:50 -

1 stop11h 10m

Wed 23/916:25 -

Nonstop8h 20m

Deal found 25/8£644

Tue 6/1010:35 -

2 stops17h 08m

Tue 13/1017:10 -

1 stop10h 15m

Deal found 22/8£650

Tue 15/1206:40 -

2 stops16h 05m

Wed 30/1219:15 -

2 stops20h 20m

Deal found 24/8£595

Wed 9/908:25 -

1 stop12h 05m

Thu 17/916:15 -

1 stop10h 35m

Deal found 21/8£724

Thu 1/1019:45 -

2 stops26h 25m

Tue 13/1019:15 -

2 stops17h 50m

Deal found 23/8£546

Sun 31/118:40 -

1 stop24h 00m

Fri 5/216:10 -

2 stops16h 15m

Deal found 24/8£661

Thu 1/1008:40 -

2 stops15h 39m

Mon 5/1009:29 -

1 stop15h 41m

Deal found 23/8£665

Find flight deals from London to Chicago

Round-trip from	£466
One-way from	£342
Popular in	August
Cheapest in	February
Average price	£718
Good round-trip deal	£599 or less
Good one-way deal	£512 or less

12/10-19/10
2 total stops
31h 50m total
London to Chicago

Search Deals

18/9
1 total stop
13h 08m total
London to Chicago

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£46 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from London (LON) to Chicago (CHI).

Search Deals

Price to beat on a one-way flight from London (LON) to Chicago (CHI).

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Tue 22/9

19:50-16:00

1 stop26h 10m

Chicago O'Hare Intl

Wed 21/10

18:00-17:45

1 stop17h 45m

£477

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Mon 21/9

12:25-16:10

3 stops33h 45m

Chicago O'Hare Intl

Mon 5/10

19:15-22:50

2 stops21h 35m

£491

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Wed 21/10

06:15-14:00

1 stop13h 45m

Chicago O'Hare Intl

Thu 29/10

21:10-12:00

1 stop9h 50m

£494

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Fri 20/11

09:00-18:25

1 stop15h 25m

Chicago O'Hare Intl

Sun 29/11

15:55-09:10

1 stop11h 15m

£522

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Tue 22/9

16:25-16:00

1 stop29h 35m

Chicago O'Hare Intl

Wed 21/10

18:00-20:30

2 stops20h 30m

£526

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Sat 17/10

19:45-16:10

2 stops26h 25m

Chicago O'Hare Intl

Sun 25/10

20:15-18:20

2 stops17h 05m

£530

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Thu 1/10

19:45-16:10

2 stops26h 25m

Chicago O'Hare Intl

Tue 13/10

19:15-19:05

2 stops17h 50m

£546

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Tue 22/9

06:50-12:00

1 stop11h 10m

Chicago O'Hare Intl

Wed 21/10

21:30-11:55

Nonstop8h 25m

£555

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Tue 6/10

07:05-16:10

2 stops15h 05m

Chicago O'Hare Intl

Tue 13/10

19:15-16:00

1 stop14h 45m

£574

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Fri 22/1

21:35-15:30

2 stops47h 55m

Chicago O'Hare Intl

Fri 29/1

20:10-08:20

2 stops30h 10m

£581

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from London with our price prediction graph.

LON-CHI

LHR-ORD

LTN-ORD

LHR-MDW

LCY-ORD

Estimated return 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 London to Chicago

LON-CHI

LHR-ORD

LTN-ORD

LHR-MDW

LCY-ORD

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

Currently, February is the cheapest month in which you can book a flight from London to Chicago (average of £460). Flying from London to Chicago in August is currently the most expensive (average of £765). 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 LON to CHI?

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

Weekly flight availability from London to Chicago

The most flights from LON to CHI are scheduled on a Monday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (46 on average).

How much does it cost for a return flight from London to Chicago?

Airfare is below average for this route at the moment.

London to Chicago flights typically cost between £511 and £746 in October.
The cheapest return price found within the last 5 days was £466 on Multiple Airlines (12 Oct–19 Oct).

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

Reykjavik (KEF) – chosen by Cheapflights users on 49% of one-stop itineraries from London to Chicago on Cheapflights.

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

Zurich (ZRH) is the most affordable one-stop option, with an average return flight price of £340.

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 11h 00m.

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

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average stopover time of 1h 03m.

How often are flights from London to Chicago delayed?

About 10% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 181 minutes.

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

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

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

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

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 6% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from London to Chicago, you should look to book at least 79 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Chicago

Read reviews from past customers who have flown with United Airlines,Aer Lingus, andIcelandair from London to Chicago. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,124 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!

United Airlines

7.4

Good

10,124 reviews

United Airlines

7.4

Good

10,124 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Aer Lingus

7.3

Good

1,728 reviews

United Airlines

7.4

Good

10,124 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Icelandair

6.9

Okay

738 reviews

United Airlines

7.4

Good

10,124 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Lufthansa

6.8

Okay

8,223 reviews

United Airlines

7.4

Good

10,124 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

British Airways

6.7

Okay

8,194 reviews

United Airlines

7.4

Good

10,124 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Related info for your journey

How long is the flight from London to Chicago?
A quick flight from London to Chicago can take about 11h 10m. TAP AIR PORTUGAL provides one of the quickest options available for as low as £555. Airlines will cover a distance of 3939 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from London to Chicago round-trip?
Our cheapest airline available from London to Chicago is Virgin Atlantic. Our recent data shows that you can find tickets from as low as £298 on this airline. Additional options worth looking into are Icelandair and Scandinavian Airlines, starting at £349 and £370 round-trip. These flights start at 49% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London to Chicago one-way?
To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at £306. Aer Lingus flights start at £314 while deals on Icelandair start at £320 one-way.
What are the most popular routes from London to Chicago?
The most popular flight routes from London to Chicago are London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl and London City - Chicago O'Hare Intl.
What are the most reliable airlines from London to Chicago?
Before booking your flight to Chicago from London, check out the most reliable airlines to get you to your destination on time: Air Canada (88%), Austrian Airlines (88%), United Airlines( 88%).
What are the cheapest flights from London to Chicago?
While on average a flight from London to Chicago is generally £2,952, our data shows the cheapest flight currently is £404. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £422 for that flight.
Where are the most common stopover locations when flying from London to Chicago?
London to Chicago flights have a stopover in Dublin most of the time.
What are some popular things to do or see while on a stopover in Dublin?
If you're on a stopover in Dublin and looking for things to do, consider visiting 3Olympia Theatre, Bord Gáis Energy Theatre, or Vicar Street. 3Olympia Theatre, Bord Gáis Energy Theatre, and Vicar Street are located about 5.7 mi, 5.7 mi, and 5.9 mi, respectively from Dublin. Those on a stopover in Dublin in need of a car hire can book one at Dublin for about £28.
Where are the least popular stopover locations for London to Chicago flights?
London to Chicago flights have a stopover in Reykjavik least often.
Can I find deals for flights from London to Chicago that include hotel bookings?
Yes. In addition to deals on London to Chicago flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Chicago?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Chicago.
Can I find deals for business class flights from London to Chicago?
Yes. Cheapflights offers flight deals from London to Chicago 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 London to Chicago?
Currently, February is the cheapest month in which you can book a flight from London to Chicago (average of £460). Flying from London to Chicago in August is currently the most expensive (average of £765). 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

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Fly from London to Chicago on these airlines

British Airways flights from London to Chicago

Lufthansa flights from London to Chicago

Finnair flights from London to Chicago

Top 10 airlines flying from London to Chicago

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£298	Average£616	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£349	Average£499	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Scandinavian Airlines	Cheapest£370	Average£533	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
JetBlue	Cheapest£378	Average£672	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
TAP AIR PORTUGAL	Cheapest£381	Average£566	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Brussels Airlines	Cheapest£388	Average£632	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£399	Average£650	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£399	Average£672	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£413	Average£679	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
United Airlines	Cheapest£417	Average£734	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Chicago?

Cheapflights helps you search for flights from London to Chicago via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to Chicago?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Chicago from London.

Can Cheapflights find flights from London to Chicago with no change fees?

Need flexible booking options for your flight to Chicago from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Cheap flights from London to Chicago from £342

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Chicago

Cheapest flights from London to ChicagoExplore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2026.

Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2026.

Best flights from London to ChicagoDiscover carefully curated flight deals from London to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Discover carefully curated flight deals from London to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Direct flights from London to ChicagoExplore direct flight options from London to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.

Explore direct flight options from London to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.

Last-minute flights from London to ChicagoDiscover last-minute flight deals from London to Chicago. Data last updated 26 August 2026 and is based on user searches.

Discover last-minute flight deals from London to Chicago. Data last updated 26 August 2026 and is based on user searches.

One-way flights from London to ChicagoSearch for one-way flight options from London to Chicago. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.

Search for one-way flight options from London to Chicago. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.

Find flight deals from London to Chicago

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One-way from

Popular in

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Average price

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Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Chicago that are best for you.

Best time to book a flight from London to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from London with our price prediction graph.

Cheapflights Insights

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

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

Find hourly flight availability from London to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 August 2026.

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

Weekly flight availability from London to Chicago

Explore weekly flight availability from London to Chicago. 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 26 August 2026.

The most flights from LON to CHI are scheduled on a Monday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (46 on average).

How much does it cost for a return flight from London to Chicago?

Airfare is below average for this route at the moment.

London to Chicago flights typically cost between £511 and £746 in October.The cheapest return price found within the last 5 days was £466 on Multiple Airlines (12 Oct–19 Oct).

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

Share of one-stop return flights from London to Chicago chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 49% of one-stop itineraries from London to Chicago on Cheapflights.

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

Average return fare for one-stop flights from London to Chicago, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Zurich (ZRH) is the most affordable one-stop option, with an average return flight price of £340.

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

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 11h 00m.

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

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

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average stopover time of 1h 03m.

How often are flights from London to Chicago delayed?

About 10% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 181 minutes.

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

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

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

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

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 6% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from London to Chicago, you should look to book at least 79 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Chicago

Read reviews from past customers who have flown with United Airlines,Aer Lingus, andIcelandair from London to Chicago. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London to Chicago?

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

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

What are the most popular routes from London to Chicago?

What are the most reliable airlines from London to Chicago?

What are the cheapest flights from London to Chicago?

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

What are some popular things to do or see while on a stopover in Dublin?

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

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

How can I find direct flights from London to Chicago?

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

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

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Fly from London to Chicago on these airlines

Choose from the following airlines for your flight from London to Chicago. Flights are based on user searches made on Cheapflights and were last updated on 26 August 2026.

Alternative routes for London to Chicago

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Cheapest flights from London to Chicago
Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2026.

Best flights from London to Chicago
Discover carefully curated flight deals from London to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 August 2026.

Direct flights from London to Chicago
Explore direct flight options from London to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 August 2026.

Last-minute flights from London to Chicago
Discover last-minute flight deals from London to Chicago. Data last updated 26 August 2026 and is based on user searches.

One-way flights from London to Chicago
Search for one-way flight options from London to Chicago. Find affordable one-way fares based on user searches. Data last updated 26 August 2026.

London to Chicago flights typically cost between £511 and £746 in October.
The cheapest return price found within the last 5 days was £466 on Multiple Airlines (12 Oct–19 Oct).