How long is the flight from London to Chicago?

A quick flight from London to Chicago can take about 11h 20m. Icelandair provides one of the quickest options available for as low as £539. 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 £327 on this airline. Additional options worth looking into are Icelandair and JetBlue, starting at £352 and £381 round-trip. These flights start at 45% 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 £309. Aer Lingus flights start at £317 while deals on Icelandair start at £323 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 £1,804, our data shows the cheapest flight currently is £412. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £398 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 (87%), Austrian Airlines (87%), United Airlines( 87%).

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 £22.

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.

£347+ 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 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 7 September 2026.

Wed 16/915:40 -

1 stop11h 45m

Sun 15/1118:30 -

1 stop10h 25m

Deal found 6/9£525

Wed 28/1012:15 -

1 stop11h 05m

Sat 14/1118:30 -

1 stop10h 20m

Deal found 5/9£525

Tue 6/1013:10 -

1 stop12h 05m

Tue 13/1015:45 -

1 stop11h 30m

Deal found 6/9£525

Sun 22/1111:55 -

1 stop11h 25m

Sun 6/1218:30 -

1 stop10h 25m

Deal found 7/9£526

Thu 1/1006:00 -

1 stop12h 35m

Sun 11/1019:05 -

1 stop16h 45m

Deal found 4/9£526

Fri 25/906:20 -

1 stop13h 40m

Wed 30/915:45 -

1 stop17h 40m

Deal found 4/9£526

Fri 25/909:40 -

2 stops33h 41m

Mon 28/914:15 -

1 stop14h 30m

Deal found 3/9£527

Sat 31/1006:00 -

1 stop12h 40m

Sat 7/1116:10 -

1 stop14h 50m

Deal found 7/9£527

Thu 5/1121:30 -

1 stop23h 25m

Mon 16/1117:40 -

1 stop21h 10m

Deal found 4/9£527

Thu 5/1116:00 -

1 stop29h 30m

Wed 11/1119:00 -

2 stops43h 35m

Deal found 6/9£527

Thu 17/913:05 -

1 stop11h 10m

Thu 12/1118:30 -

1 stop10h 20m

Deal found 6/9£527

Sun 22/1112:35 -

1 stop18h 07m

Wed 2/1206:15 -

1 stop18h 40m

Deal found 7/9£528

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 7 September 2026.

Mon 19/1008:15 -

1 stop11h 45m

Wed 21/1021:00 -

1 stop12h 25m

Deal found 5/9£530

Tue 29/915:40 -

1 stop32h 35m

Thu 28/118:30 -

1 stop10h 25m

Deal found 4/9£533

Thu 5/1108:50 -

1 stop11h 20m

Thu 19/1115:55 -

1 stop11h 10m

Deal found 5/9£539

Tue 6/1006:00 -

1 stop13h 20m

Tue 13/1016:20 -

1 stop34h 00m

Deal found 6/9£549

Wed 30/906:30 -

2 stops16h 29m

Thu 28/111:10 -

1 stop14h 40m

Deal found 4/9£584

Sat 31/1006:20 -

2 stops16h 40m

Sat 7/1111:33 -

2 stops13h 47m

Deal found 7/9£589

Fri 18/907:05 -

2 stops20h 32m

Mon 21/919:15 -

2 stops18h 40m

Deal found 3/9£617

Tue 13/1009:15 -

1 stop11h 40m

Wed 25/1116:20 -

1 stop10h 55m

Deal found 2/9£618

Tue 22/916:25 -

1 stop29h 35m

Wed 21/1018:00 -

2 stops20h 30m

Deal found 5/9£623

Wed 30/910:00 -

1 stop10h 30m

Thu 28/116:25 -

1 stop9h 45m

Deal found 4/9£644

Thu 1/1009:15 -

1 stop12h 40m

Thu 28/118:30 -

2 stops16h 35m

Deal found 4/9£669

Sat 10/1017:45 -

1 stop21h 55m

Thu 15/1020:10 -

1 stop38h 40m

Deal found 4/9£678

Thu 22/1010:25 -

2 stops18h 08m

Thu 29/1018:44 -

2 stops16h 01m

Deal found 7/9£834

Sat 3/1011:00 -

1 stop14h 15m

Mon 12/1015:45 -

1 stop11h 30m

Deal found 7/9£539

Tue 22/913:25 -

1 stop11h 50m

Wed 21/1015:45 -

1 stop10h 20m

Deal found 4/9£540

Mon 28/911:45 -

2 stops16h 33m

Thu 28/105:30 -

1 stop18h 55m

Deal found 4/9£584

Thu 17/906:15 -

2 stops16h 00m

Wed 23/909:29 -

2 stops15h 16m

Deal found 6/9£590

Thu 12/1108:20 -

2 stops15h 00m

Tue 24/1113:55 -

2 stops17h 50m

Deal found 6/9£547

Wed 25/1108:50 -

1 stop11h 20m

Tue 1/1215:55 -

1 stop10h 10m

Deal found 7/9£556

Thu 17/908:40 -

2 stops15h 39m

Mon 21/910:48 -

1 stop13h 37m

Deal found 4/9£584

Fri 5/306:30 -

2 stops16h 20m

Sun 14/312:30 -

1 stop13h 35m

Deal found 6/9£591

Sun 20/920:45 -

2 stops27h 48m

Sat 10/1016:19 -

2 stops21h 26m

Deal found 6/9£657

Tue 20/1021:15 -

2 stops45h 25m

Wed 4/1119:00 -

1 stop14h 05m

Deal found 6/9£666

Sun 1/1108:40 -

2 stops17h 15m

Sun 8/1121:55 -

1 stop20h 00m

Deal found 2/9£557

Tue 17/1106:50 -

1 stop13h 20m

Tue 8/1220:05 -

1 stop10h 35m

Deal found 2/9£561

Thu 19/1110:55 -

1 stop29h 05m

Sat 5/1211:45 -

1 stop22h 35m

Deal found 3/9£680

Wed 30/909:25 -

1 stop12h 30m

Fri 29/116:10 -

2 stops16h 15m

Deal found 4/9£686

Mon 9/1108:40 -

2 stops16h 04m

Sat 14/1118:00 -

1 stop20h 10m

Deal found 5/9£584

Thu 29/1010:00 -

1 stop12h 15m

Thu 5/1113:50 -

2 stops19h 55m

Deal found 6/9£596

Thu 8/1017:35 -

1 stop22h 05m

Tue 13/1011:25 -

1 stop23h 25m

Deal found 3/9£692

Find flight deals from London to Chicago

Round-trip from	£525
One-way from	£347
Popular in	August
Cheapest in	February
Average price	£589
Good round-trip deal	£606 or less
Good one-way deal	£518 or less

22/10-29/10
2 total stops
29h 00m total
London to Chicago

Search Deals

5/12-31/12
2 total stops
24h 40m total
London to Chicago

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£63 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

Sun 6/12

20:05-16:15

1 stop26h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£350

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Tue 8/12

07:00-18:20

3 stops41h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£351

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Sun 29/11

09:05-14:00

1 stop34h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£353

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Wed 25/11

17:20-15:30

3 stops52h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£360

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Thu 26/11

18:05-15:30

3 stops27h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£360

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Mon 25/1

06:00-16:15

1 stop16h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£362

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Mon 14/9

20:35-16:00

3 stops49h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£365

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Wed 27/1

21:30-14:55

1 stop23h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£365

LondonChicago

LTN London Luton - ORD Chicago O'Hare Intl

LTNORD

London Luton

Tue 26/1

21:30-14:55

1 stop23h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£365

LondonChicago

LHR London Heathrow - ORD Chicago O'Hare Intl

LHRORD

London Heathrow

Wed 2/12

10:25-13:45

Nonstop9h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£413

Flights are sorted by cheapest return flights first.

Deals found on 6/9

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

LHR-ORD

LTN-ORD

SEN-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

LHR-ORD

LTN-ORD

SEN-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 £471). Flying from London to Chicago in August is currently the most expensive (average of £786). 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 Thursday (49 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (19 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 £458 and £668 in October.
The cheapest return price found within the last 5 days was £525 on Multiple Airlines (22 Oct–29 Oct).

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

Reykjavik (KEF) – chosen by Cheapflights users on 48% of one-stop itineraries from London to Chicago on Cheapflights.

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

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £405.

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

10,175 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

10,175 reviews

United Airlines

7.4

Good

10,175 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Aer Lingus

7.3

Good

1,751 reviews

United Airlines

7.4

Good

10,175 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Icelandair

6.9

Okay

741 reviews

United Airlines

7.4

Good

10,175 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Lufthansa

6.8

Okay

8,219 reviews

United Airlines

7.4

Good

10,175 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

British Airways

6.7

Okay

8,209 reviews

United Airlines

7.4

Good

10,175 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. Icelandair provides one of the quickest options available for as low as £539. 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 £327 on this airline. Additional options worth looking into are Icelandair and JetBlue, starting at £352 and £381 round-trip. These flights start at 45% 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 £309. Aer Lingus flights start at £317 while deals on Icelandair start at £323 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 (87%), Austrian Airlines (87%), United Airlines( 87%).
What are the cheapest flights from London to Chicago?
While on average a flight from London to Chicago is generally £1,804, our data shows the cheapest flight currently is £412. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £398 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 £22.
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 £471). Flying from London to Chicago in August is currently the most expensive (average of £786). 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£327	Average£634	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£352	Average£505	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Scandinavian Airlines	Cheapest£380	Average£540	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
JetBlue	Cheapest£381	Average£678	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
TAP AIR PORTUGAL	Cheapest£385	Average£571	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Brussels Airlines	Cheapest£392	Average£638	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£402	Average£658	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£404	Average£678	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£421	Average£745	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Finnair	Cheapest£425	Average£701	FlexibilityNo cancel fee	On-time76%	Search Finnair 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 £347

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. 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 7 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 7 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 7 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 7 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 7 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 7 September 2026.

Last-minute flights from London to ChicagoDiscover last-minute flight deals from London to Chicago. Data last updated 7 September 2026 and is based on user searches.

Discover last-minute flight deals from London to Chicago. Data last updated 7 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 7 September 2026.

Search for one-way flight options from London to Chicago. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

Find flight deals from London to Chicago

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One-way from

Popular in

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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 7 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 7 September 2026.

The most flights from LON to CHI are scheduled on a Thursday (49 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (19 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 £458 and £668 in October.The cheapest return price found within the last 5 days was £525 on Multiple Airlines (22 Oct–29 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 48% 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.

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £405.

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 7 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 7 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 7 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 7 September 2026.

Last-minute flights from London to Chicago
Discover last-minute flight deals from London to Chicago. Data last updated 7 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 7 September 2026.

London to Chicago flights typically cost between £458 and £668 in October.
The cheapest return price found within the last 5 days was £525 on Multiple Airlines (22 Oct–29 Oct).