How long is the flight from Chicago to London?

British Airways, Delta, and Virgin Atlantic can get you from Chicago to London in just under 11h. Your travel time can differ by up to 6h 30m. There are 3939 mi between Chicago and London. This flight may include one or multiple stops.

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

Our cheapest airline available from Chicago to London is Icelandair. Our recent data shows that you can find tickets from as low as £368 on this airline. Additional options worth looking into are British Airways and Aer Lingus, starting at £458 and £464 round-trip. These flights start at 43% lower than the current average price 3 months from now.

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

£284 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Iberia and British Airways, with prices starting from £290 and £295, respectively.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Chicago to London?

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

What are the cheapest flights from Chicago to London?

On average you can expect to pay £681 for a flight from Chicago to London. The cheapest flight overall is £232 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £364.

What are the most reliable airlines from Chicago to London?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to London on time: Royal Jordanian (73%), Malaysia Airlines (68%), Air Canada (66%).

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

Consider British Airways, Aer Lingus or United Airlines when booking your flight. These represent the most popular airlines when flying from Chicago to London.

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

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

How can I find direct flights from Chicago to London?

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

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

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

£226+ Cheap Flights from Chicago to London

Cheapflights Tip: The best prices from Chicago to London are usually found in February or January, booked 33 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from Chicago to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Chicago to London
Explore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 September 2026.

Sun 4/1021:30 -

Nonstop8h 25m

Tue 13/1006:50 -

1 stop11h 10m

Deal found 23/9£541

Mon 28/919:05 -

2 stops21h 45m

Mon 5/1017:50 -

2 stops24h 45m

Deal found 22/9£541

Tue 3/1113:55 -

1 stop11h 15m

Fri 13/1109:00 -

2 stops16h 05m

Deal found 23/9£542

Tue 1/1221:50 -

Nonstop7h 45m

Tue 8/1215:40 -

Nonstop9h 05m

Deal found 22/9£543

Thu 8/1019:05 -

1 stop16h 45m

Wed 14/1009:25 -

1 stop12h 30m

Deal found 23/9£543

Fri 16/1014:20 -

1 stop20h 05m

Fri 23/1008:40 -

1 stop13h 15m

Deal found 22/9£544

Sun 25/1019:50 -

1 stop31h 00m

Mon 9/1118:40 -

2 stops50h 12m

Deal found 23/9£544

Sat 28/1118:30 -

2 stops19h 40m

Sat 5/1208:25 -

2 stops14h 55m

Deal found 22/9£544

Sun 4/1013:29 -

1 stop10h 51m

Tue 13/1008:40 -

1 stop11h 35m

Deal found 23/9£544

Mon 28/914:20 -

1 stop12h 05m

Sun 4/1018:35 -

1 stop24h 00m

Deal found 21/9£544

Fri 23/1021:00 -

1 stop16h 20m

Fri 30/1007:45 -

1 stop16h 35m

Deal found 23/9£544

Wed 21/1012:59 -

1 stop11h 36m

Wed 28/1011:10 -

1 stop13h 15m

Deal found 21/9£545

Best flights from Chicago to London
Discover carefully curated flight deals from Chicago to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Sun 14/218:40 -

1 stop11h 00m

Tue 23/212:35 -

Nonstop8h 55m

Deal found 21/9£562

Mon 22/315:00 -

1 stop13h 55m

Tue 30/306:30 -

2 stops16h 07m

Deal found 23/9£563

Tue 26/109:30 -

2 stops17h 30m

Tue 2/210:00 -

1 stop12h 15m

Deal found 23/9£568

Fri 16/1016:25 -

Nonstop8h 20m

Tue 27/1007:40 -

Nonstop9h 05m

Deal found 23/9£587

Tue 17/1120:15 -

1 stop38h 05m

Tue 1/1217:20 -

1 stop31h 00m

Deal found 22/9£627

Sun 22/1119:10 -

1 stop14h 30m

Fri 27/1105:55 -

1 stop16h 50m

Deal found 23/9£643

Wed 14/1010:24 -

2 stops16h 56m

Sun 25/1019:30 -

1 stop27h 15m

Deal found 23/9£651

Sun 21/319:50 -

1 stop15h 30m

Wed 24/309:00 -

1 stop13h 15m

Deal found 21/9£652

Fri 30/1021:10 -

2 stops30h 10m

Wed 4/1116:35 -

2 stops32h 54m

Deal found 20/9£831

Mon 5/1017:10 -

1 stop16h 50m

Mon 12/1017:00 -

1 stop28h 10m

Deal found 21/9£568

Thu 8/1007:09 -

1 stop17h 26m

Tue 13/1008:00 -

Nonstop9h 10m

Deal found 20/9£593

Sun 21/312:15 -

1 stop13h 05m

Mon 29/311:45 -

2 stops15h 48m

Deal found 19/9£601

Wed 11/1118:25 -

1 stop15h 20m

Wed 2/1210:00 -

1 stop12h 15m

Deal found 19/9£581

Mon 5/1020:10 -

1 stop31h 45m

Thu 19/1117:20 -

1 stop22h 40m

Deal found 19/9£650

Tue 29/1217:45 -

Nonstop8h 10m

Wed 6/113:30 -

1 stop31h 50m

Deal found 23/9£594

Fri 16/1008:26 -

1 stop19h 34m

Sun 25/1012:35 -

1 stop23h 56m

Deal found 23/9£680

Fri 16/1010:30 -

1 stop14h 45m

Sun 25/1017:20 -

1 stop21h 04m

Deal found 23/9£635

Wed 17/312:45 -

1 stop16h 10m

Fri 26/317:20 -

1 stop22h 40m

Deal found 21/9£650

Wed 30/1219:10 -

2 stops15h 50m

Tue 5/117:00 -

2 stops35h 04m

Deal found 21/9£752

Wed 7/1020:10 -

1 stop31h 45m

Tue 17/1117:20 -

1 stop22h 40m

Deal found 19/9£650

Fri 30/1021:10 -

1 stop20h 30m

Tue 10/1108:15 -

3 stops33h 44m

Deal found 19/9£765

Tue 3/1117:29 -

2 stops33h 56m

Tue 10/1121:20 -

2 stops24h 10m

Deal found 20/9£843

Fri 9/1010:30 -

1 stop14h 45m

Tue 13/1006:15 -

2 stops17h 05m

Deal found 21/9£705

Sat 24/1021:15 -

1 stop31h 40m

Wed 28/1010:55 -

1 stop29h 05m

Deal found 19/9£657

Wed 21/1018:00 -

1 stop33h 45m

Wed 28/1009:35 -

2 stops27h 13m

Deal found 22/9£858

Mon 5/1020:10 -

1 stop31h 45m

Mon 19/1010:50 -

1 stop37h 25m

Deal found 21/9£657

Sun 8/1120:10 -

2 stops18h 25m

Fri 13/1121:35 -

3 stops27h 42m

Deal found 19/9£843

Mon 5/1020:10 -

1 stop31h 45m

Mon 16/1110:55 -

1 stop29h 05m

Deal found 19/9£680

Sun 27/1220:10 -

1 stop31h 40m

Sat 9/116:35 -

1 stop28h 55m

Deal found 20/9£908

Fri 19/312:45 -

1 stop16h 10m

Wed 24/310:55 -

1 stop29h 05m

Deal found 21/9£680

Find flight deals from Chicago to London

Round-trip from	£541
One-way from	£226
Popular in	June
Cheapest in	February
Average price	£681
Good round-trip deal	£782 or less
Good one-way deal	£290 or less

United Airlines
4/10-13/10
1 total stop
19h 35m total
Chicago to London

Search Deals

Icelandair
11/10-31/12
1 total stop
31h 30m total
Chicago to London

Search Deals

Highest demand for flights based on searches. 22% potential increase in price (£139 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£28 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 Chicago (CHI) to London (LON).

Search Deals

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

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Tue 23/3

18:10-06:55

Nonstop7h 45m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£245

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Tue 29/9

10:59-09:30

1 stop16h 31m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£248

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Wed 21/10

09:38-06:30

1 stop14h 52m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£248

ChicagoLondon

ORD Chicago O'Hare Intl - LGW London Gatwick

ORDLGW

Chicago O'Hare Intl

Mon 11/1

12:15-09:00

2 stops14h 45m

London Gatwick

Wed 31/12

00:00-17:00

Nonstop0h 00m

£251

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Fri 9/10

15:45-17:35

1 stop19h 50m

London Stansted

Wed 31/12

00:00-17:00

Nonstop0h 00m

£337

ChicagoLondon

ORD Chicago O'Hare Intl - LGW London Gatwick

ORDLGW

Chicago O'Hare Intl

Tue 8/12

18:25-15:45

1 stop15h 20m

London Gatwick

Wed 31/12

00:00-17:00

Nonstop0h 00m

£384

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Mon 9/11

20:15-09:55

1 stop31h 40m

London Stansted

Wed 31/12

00:00-17:00

Nonstop0h 00m

£401

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Tue 13/10

20:10-16:40

1 stop38h 30m

London Stansted

Wed 31/12

00:00-17:00

Nonstop0h 00m

£408

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Fri 30/10

21:15-09:55

1 stop31h 40m

London Stansted

Wed 31/12

00:00-17:00

Nonstop0h 00m

£420

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Thu 5/11

21:15-16:20

1 stop37h 05m

London Stansted

Wed 31/12

00:00-17:00

Nonstop0h 00m

£425

Flights are sorted by cheapest return flights first.

Deals found on 23/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Chicago to London

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

CHI-LON

ORD-LHR

ORD-LGW

ORD-STN

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 Chicago to London

CHI-LON

ORD-LHR

ORD-LGW

ORD-STN

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

Currently, January is the cheapest month in which you can book a flight from Chicago to London (average of £494). Flying from Chicago to London in June is currently the most expensive (average of £1,041). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

When flying from Chicago to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Chicago to London

The most flights from CHI to LON are scheduled on a Tuesday (49 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (48 on average).

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

Airfare is typical for this route at the moment.

Chicago to London flights typically cost between £536 and £762 in October.
The cheapest return price found within the last 5 days was £541 on United Airlines (4 Oct–13 Oct).

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

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

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

Copenhagen (CPH) is the most affordable one-stop option, with an average return flight price of £569.

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

Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 10h 21m.

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

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average stopover time of 0h 56m.

How often are flights from Chicago to London delayed?

About 24% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 164 minutes.

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

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

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

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

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

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

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

The best time to book flights from Chicago to London is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing London

Read reviews from past customers who have flown with Aer Lingus,American Airlines, andIberia from Chicago to London. 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.

Aer Lingus

7.3

Good

1,788 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

Aer Lingus

7.3

Good

1,788 reviews

Aer Lingus

7.3

Good

1,788 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

American Airlines

7.0

Good

12,075 reviews

Aer Lingus

7.3

Good

1,788 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

Iberia

7.0

Good

3,248 reviews

Aer Lingus

7.3

Good

1,788 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

Lufthansa

6.8

Okay

8,234 reviews

Aer Lingus

7.3

Good

1,788 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

British Airways

6.7

Okay

8,227 reviews

Aer Lingus

7.3

Good

1,788 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

Related info for your journey

How long is the flight from Chicago to London?
British Airways, Delta, and Virgin Atlantic can get you from Chicago to London in just under 11h. Your travel time can differ by up to 6h 30m. There are 3939 mi between Chicago and London. This flight may include one or multiple stops.
What are the cheapest airlines flying from Chicago to London round-trip?
Our cheapest airline available from Chicago to London is Icelandair. Our recent data shows that you can find tickets from as low as £368 on this airline. Additional options worth looking into are British Airways and Aer Lingus, starting at £458 and £464 round-trip. These flights start at 43% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Chicago to London one-way?
£284 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Iberia and British Airways, with prices starting from £290 and £295, respectively.
What are the most popular routes from Chicago to London?
The most popular route from Chicago to London is Chicago O'Hare Intl - London Heathrow. You may also consider Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City.
What are the most reliable airlines from Chicago to London?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to London on time: Royal Jordanian (73%), Malaysia Airlines (68%), Air Canada (66%).
What are the cheapest flights from Chicago to London?
On average you can expect to pay £681 for a flight from Chicago to London. The cheapest flight overall is £232 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £364.
Can I find deals for flights from Chicago to London that include hotel bookings?
Yes. In addition to deals on Chicago to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Chicago to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to London.
Can I find deals for business class flights from Chicago to London?
Yes. Cheapflights offers flight deals from Chicago to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Chicago to London?
Currently, January is the cheapest month in which you can book a flight from Chicago to London (average of £494). Flying from Chicago to London in June is currently the most expensive (average of £1,041). 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.

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Top 7 airlines flying from Chicago to London

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£368	Average£568	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£458	Average£699	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£464	Average£816	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
American Airlines	Cheapest£494	Average£862	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	Cheapest£514	Average£878	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Iberia	Cheapest£524	Average£704	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
JetBlue	Cheapest£749	Average£892	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Chicago to London flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

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 London from Chicago.

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

Yes! Cheapflights helps users easily find flights from Chicago to London with no change fees.

Can Cheapflights notify me if prices for flights from Chicago to London become cheaper?

Yes! Start tracking prices for Chicago to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Chicago to London from £226

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Chicago to London

Cheapest flights from Chicago to LondonExplore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 September 2026.

Explore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 September 2026.

Best flights from Chicago to LondonDiscover carefully curated flight deals from Chicago to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Discover carefully curated flight deals from Chicago to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Direct flights from Chicago to LondonExplore direct flight options from Chicago to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 24 September 2026.

Explore direct flight options from Chicago to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 24 September 2026.

Last-minute flights from Chicago to LondonDiscover last-minute flight deals from Chicago to London. Data last updated 24 September 2026 and is based on user searches.

Discover last-minute flight deals from Chicago to London. Data last updated 24 September 2026 and is based on user searches.

One-way flights from Chicago to LondonSearch for one-way flight options from Chicago to London. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.

Search for one-way flight options from Chicago to London. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.

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

Best time to book a flight from Chicago to London

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

Cheapflights Insights

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

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

Find hourly flight availability from Chicago to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 September 2026.

When flying from Chicago to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Chicago to London

Explore weekly flight availability from Chicago to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 24 September 2026.

The most flights from CHI to LON are scheduled on a Tuesday (49 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (48 on average).

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

Airfare is typical for this route at the moment.

Chicago to London flights typically cost between £536 and £762 in October.The cheapest return price found within the last 5 days was £541 on United Airlines (4 Oct–13 Oct).

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

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

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

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

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

Copenhagen (CPH) is the most affordable one-stop option, with an average return flight price of £569.

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

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

Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 10h 21m.

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

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

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average stopover time of 0h 56m.

How often are flights from Chicago to London delayed?

About 24% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 164 minutes.

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

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

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

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

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

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

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

The best time to book flights from Chicago to London is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing London

Read reviews from past customers who have flown with Aer Lingus,American Airlines, andIberia from Chicago to London. 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 Chicago to London?

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

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

What are the most popular routes from Chicago to London?

What are the most reliable airlines from Chicago to London?

What are the cheapest flights from Chicago to London?

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

How can I find direct flights from Chicago to London?

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

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

Travelling to a place near London?

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Alternative routes for Chicago to London

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Complete your trip

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Direct flights to England

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Cheapest flights from Chicago to London
Explore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 September 2026.

Best flights from Chicago to London
Discover carefully curated flight deals from Chicago to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Direct flights from Chicago to London
Explore direct flight options from Chicago to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 24 September 2026.

Last-minute flights from Chicago to London
Discover last-minute flight deals from Chicago to London. Data last updated 24 September 2026 and is based on user searches.

One-way flights from Chicago to London
Search for one-way flight options from Chicago to London. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.

Chicago to London flights typically cost between £536 and £762 in October.
The cheapest return price found within the last 5 days was £541 on United Airlines (4 Oct–13 Oct).