How long is the flight from London to Chicago?

A quick flight from London to Chicago can take about 11h 20m. United Airlines provides one of the quickest options available for as low as £544. 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 £212 on this airline. Additional options worth looking into are Icelandair and JetBlue, starting at £356 and £385 round-trip. These flights start at 65% 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 £312. Aer Lingus flights start at £316 while deals on Icelandair start at £326 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 £1,755, our data shows the cheapest flight currently is £416. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £279 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 £20.

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.

£350+ Cheap Flights from London to Chicago

Cheapflights Tip: The best prices from London to Chicago are usually found in February or January, booked 63 days in advance, depart on a Wednesday 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 22 September 2026.

Fri 6/1108:15 -

2 stops15h 05m

Fri 13/1118:30 -

2 stops14h 35m

Deal found 21/9£536

Fri 13/1109:15 -

1 stop13h 00m

Mon 23/1118:50 -

1 stop12h 00m

Deal found 21/9£536

Fri 2/1013:25 -

1 stop11h 50m

Mon 5/1021:00 -

1 stop12h 00m

Deal found 21/9£536

Sat 31/1006:00 -

1 stop14h 00m

Wed 4/1117:45 -

Nonstop8h 10m

Deal found 21/9£537

Mon 19/1012:40 -

1 stop12h 35m

Thu 29/1016:55 -

1 stop10h 35m

Deal found 21/9£537

Wed 30/921:25 -

1 stop26h 50m

Sun 25/1019:30 -

1 stop10h 20m

Deal found 21/9£537

Mon 2/1106:00 -

1 stop14h 00m

Mon 16/1121:50 -

Nonstop8h 10m

Deal found 22/9£538

Thu 5/1115:05 -

3 stops30h 25m

Thu 12/1118:30 -

2 stops15h 45m

Deal found 21/9£538

Wed 28/1013:35 -

Nonstop9h 20m

Wed 4/1121:50 -

Nonstop8h 10m

Deal found 21/9£539

Wed 28/1006:50 -

1 stop13h 20m

Wed 4/1120:05 -

1 stop10h 35m

Deal found 21/9£540

Sun 22/1109:05 -

1 stop34h 55m

Wed 2/1215:45 -

Nonstop8h 10m

Deal found 21/9£540

Fri 30/1011:55 -

2 stops25h 51m

Wed 11/1119:28 -

3 stops33h 27m

Deal found 19/9£540

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 22 September 2026.

Mon 2/1111:10 -

1 stop13h 15m

Mon 16/1115:45 -

Nonstop8h 10m

Deal found 21/9£540

Mon 2/1106:00 -

1 stop14h 00m

Mon 16/1121:50 -

Nonstop8h 10m

Deal found 17/9£540

Thu 29/1008:50 -

1 stop11h 20m

Sat 14/1120:30 -

Nonstop7h 55m

Deal found 20/9£544

Fri 6/1107:00 -

2 stops16h 20m

Fri 13/1118:30 -

2 stops19h 55m

Deal found 21/9£563

Wed 30/906:30 -

2 stops16h 29m

Sat 10/1011:09 -

1 stop14h 01m

Deal found 18/9£584

Thu 19/1108:40 -

2 stops15h 24m

Mon 23/1109:30 -

2 stops15h 50m

Deal found 18/9£584

Mon 2/1109:15 -

2 stops15h 00m

Mon 16/1116:10 -

1 stop14h 40m

Deal found 17/9£584

Thu 22/1018:40 -

1 stop27h 30m

Sun 25/1020:15 -

1 stop17h 15m

Deal found 21/9£602

Thu 18/208:55 -

1 stop13h 30m

Tue 23/217:25 -

1 stop12h 15m

Deal found 22/9£609

Thu 22/1021:20 -

2 stops24h 40m

Sun 25/1021:10 -

1 stop13h 35m

Deal found 21/9£664

Mon 2/1110:55 -

1 stop38h 25m

Mon 16/1120:15 -

1 stop31h 40m

Deal found 18/9£718

Thu 19/1109:00 -

1 stop13h 15m

Mon 23/1115:45 -

Nonstop8h 10m

Deal found 18/9£540

Thu 12/1112:10 -

1 stop12h 10m

Sat 28/1120:00 -

Nonstop8h 00m

Deal found 21/9£546

Thu 15/1006:20 -

2 stops19h 35m

Mon 19/1016:05 -

2 stops27h 05m

Deal found 21/9£576

Wed 4/1106:30 -

2 stops17h 30m

Fri 13/1113:05 -

1 stop12h 45m

Deal found 19/9£584

Thu 12/1108:40 -

2 stops15h 24m

Sun 15/1109:30 -

2 stops15h 20m

Deal found 19/9£584

Wed 14/1010:25 -

2 stops18h 08m

Wed 21/1010:59 -

2 stops16h 26m

Deal found 21/9£1,222

Tue 24/1109:15 -

2 stops15h 00m

Mon 30/1115:40 -

2 stops15h 10m

Deal found 19/9£613

Wed 2/1206:50 -

1 stop13h 20m

Tue 8/1220:05 -

1 stop10h 35m

Deal found 19/9£561

Thu 8/1014:05 -

1 stop26h 07m

Mon 12/1014:20 -

1 stop11h 35m

Deal found 20/9£578

Sat 21/1106:30 -

2 stops16h 09m

Wed 2/1211:28 -

1 stop14h 22m

Deal found 19/9£584

Thu 5/1108:40 -

2 stops15h 20m

Thu 12/1113:05 -

2 stops14h 05m

Deal found 21/9£585

Sun 22/1106:00 -

1 stop17h 20m

Sun 29/1118:30 -

1 stop14h 35m

Deal found 18/9£588

Wed 21/1016:25 -

1 stop26h 15m

Sat 31/1013:00 -

2 stops15h 50m

Deal found 19/9£673

Sat 21/1107:45 -

1 stop12h 25m

Wed 2/1220:05 -

1 stop10h 35m

Deal found 17/9£565

Tue 27/1019:05 -

1 stop23h 35m

Wed 4/1121:35 -

2 stops14h 55m

Deal found 21/9£643

Mon 2/1106:20 -

2 stops17h 40m

Mon 16/1113:05 -

1 stop13h 55m

Deal found 17/9£593

Tue 3/1117:20 -

1 stop23h 40m

Tue 10/1120:15 -

1 stop38h 05m

Deal found 19/9£720

Thu 5/1106:05 -

1 stop17h 15m

Sun 8/1118:30 -

1 stop14h 35m

Deal found 20/9£595

Tue 3/1110:00 -

2 stops18h 33m

Tue 10/1113:31 -

2 stops20h 14m

Deal found 19/9£600

Find flight deals from London to Chicago

Round-trip from	£536
One-way from	£350
Popular in	August
Cheapest in	February
Average price	£623
Good round-trip deal	£615 or less
Good one-way deal	£532 or less

SWISS
13/11-23/11
2 total stops
25h 00m total
London to Chicago

Search Deals

19/11-31/12
3 total stops
26h 15m total
London to Chicago

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£65 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

Mon 7/12

09:00-16:15

1 stop13h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£355

LondonChicago

STN London Stansted - MDW Chicago Midway

STNMDW

London Stansted

Tue 10/11

18:25-17:47

3 stops29h 22m

Chicago Midway

Wed 31/12

00:00-07:00

Nonstop0h 00m

£367

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Fri 4/12

20:05-14:10

1 stop24h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£371

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Wed 18/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£372

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Tue 27/10

18:40-17:15

1 stop27h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£373

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Wed 30/9

21:50-00:45

3 stops56h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£381

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Mon 5/10

07:25-00:23

3 stops46h 58m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£383

LondonChicago

STN London Stansted - MDW Chicago Midway

STNMDW

London Stansted

Tue 3/11

18:25-23:47

3 stops35h 22m

Chicago Midway

Wed 31/12

00:00-07:00

Nonstop0h 00m

£387

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Fri 20/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£402

LondonChicago

LGW London Gatwick - ORD Chicago O'Hare Intl

LGWORD

London Gatwick

Sun 22/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£402

Flights are sorted by cheapest return flights first.

Deals found on 20/9

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

LGW-ORD

LCY-ORD

LHR-ORD

LTN-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

LGW-ORD

LCY-ORD

LHR-ORD

LTN-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 £483). Flying from London to Chicago in August is currently the most expensive (average of £796). 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 Thursday, which is when the least amount of flights are scheduled (39 on average).

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

Airfare is typical for this route at the moment.

London to Chicago flights typically cost between £516 and £718 in October.
The cheapest return price found within the last 5 days was £536 on Icelandair (21 Oct–7 Nov).

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

Reykjavik (KEF) – chosen by Cheapflights users on 47% of one-stop itineraries from London to Chicago on Cheapflights.

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

Amsterdam (AMS) is the most affordable one-stop option, with an average return flight price of £331.

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 9% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 183 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?

Sunday tends to have the lowest number of delays on this route, whereas Friday 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 5% 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 62 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

10,222 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

10,222 reviews

United Airlines

7.4

Good

10,222 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Aer Lingus

7.3

Good

1,781 reviews

United Airlines

7.4

Good

10,222 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Icelandair

6.9

Okay

747 reviews

United Airlines

7.4

Good

10,222 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Lufthansa

6.8

Okay

8,238 reviews

United Airlines

7.4

Good

10,222 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

British Airways

6.7

Okay

8,226 reviews

United Airlines

7.4

Good

10,222 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 20m. United Airlines provides one of the quickest options available for as low as £544. 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 £212 on this airline. Additional options worth looking into are Icelandair and JetBlue, starting at £356 and £385 round-trip. These flights start at 65% 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 £312. Aer Lingus flights start at £316 while deals on Icelandair start at £326 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 £1,755, our data shows the cheapest flight currently is £416. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £279 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 £20.
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 £483). Flying from London to Chicago in August is currently the most expensive (average of £796). 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

Browse thousands of different options on Cheapflights for your next trip

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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£212	Average£652	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£356	Average£513	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
JetBlue	Cheapest£385	Average£685	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Scandinavian Airlines	Cheapest£388	Average£547	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£389	Average£583	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Brussels Airlines	Cheapest£396	Average£668	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
British Airways	Cheapest£419	Average£692	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£429	Average£714	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£431	Average£766	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£434	Average£772	FlexibilityNo cancel fee	On-time71%	Search American 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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Not ready to book yet? You can track prices for flights from London to Chicago on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from London to Chicago from £350

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/11. 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 22 September 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 22 September 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 22 September 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 22 September 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 22 September 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 22 September 2026.

Last-minute flights from London to ChicagoDiscover last-minute flight deals from London to Chicago. Data last updated 22 September 2026 and is based on user searches.

Discover last-minute flight deals from London to Chicago. Data last updated 22 September 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 22 September 2026.

Search for one-way flight options from London to Chicago. Find affordable one-way fares based on user searches. Data last updated 22 September 2026.

Find flight deals from London to Chicago

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One-way from

Popular in

Cheapest in

Average price

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Good one-way deal

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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 22 September 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 22 September 2026.

The most flights from LON to CHI are scheduled on a Monday (49 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (39 on average).

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

Airfare is typical for this route at the moment.

London to Chicago flights typically cost between £516 and £718 in October.The cheapest return price found within the last 5 days was £536 on Icelandair (21 Oct–7 Nov).

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 47% 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.

Amsterdam (AMS) is the most affordable one-stop option, with an average return flight price of £331.

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 9% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 183 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?

Sunday tends to have the lowest number of delays on this route, whereas Friday 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 5% 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 62 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 22 September 2026.

Alternative routes for London to Chicago

See prices for flight routes from nearby airports that may be better suited for you.

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 22 September 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 22 September 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 22 September 2026.

Last-minute flights from London to Chicago
Discover last-minute flight deals from London to Chicago. Data last updated 22 September 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 22 September 2026.

London to Chicago flights typically cost between £516 and £718 in October.
The cheapest return price found within the last 5 days was £536 on Icelandair (21 Oct–7 Nov).