How long is the flight from Chicago to London?

Scandinavian Airlines, Turkish Airlines, and Virgin Atlantic can get you from Chicago to London in just under 14h 50m. Your travel time can differ by up to 5h 50m. 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 £366 on this airline. Additional options worth looking into are British Airways and Aer Lingus, starting at £455 and £461 round-trip. These flights start at 44% lower than the current average price 3 months from now.

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

£288 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on Lufthansa and British Airways, with prices starting from £293 and £298, 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 Stansted.

What are the cheapest flights from Chicago to London?

On average you can expect to pay £754 for a flight from Chicago to London. The cheapest flight overall is £273 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £442.

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 (85%), Air Canada (80%), Austrian Airlines (80%).

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.

£237+ Cheap Flights from Chicago to London

Cheapflights Tip: The best prices from Chicago to London are usually found in February or January, booked 73 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 21 October 2026.

Wed 30/1220:05 -

1 stop21h 15m

Sat 9/108:45 -

2 stops38h 35m

Deal found 17/10£526

Sun 8/1120:05 -

1 stop18h 00m

Thu 19/1119:50 -

2 stops25h 40m

Deal found 16/10£527

Fri 27/1120:10 -

1 stop21h 45m

Sat 5/1218:30 -

2 stops27h 00m

Deal found 19/10£528

Sun 15/1115:55 -

1 stop11h 20m

Tue 24/1106:20 -

2 stops39h 10m

Deal found 16/10£529

Sun 15/1120:10 -

1 stop21h 40m

Tue 24/1113:25 -

2 stops32h 05m

Deal found 20/10£529

Thu 19/1118:30 -

1 stop10h 25m

Sun 22/1111:55 -

1 stop11h 25m

Deal found 17/10£529

Tue 3/1118:30 -

2 stops18h 20m

Tue 17/1108:15 -

2 stops15h 05m

Deal found 17/10£529

Mon 23/1120:05 -

1 stop16h 55m

Tue 1/1208:50 -

1 stop15h 30m

Deal found 16/10£530

Mon 2/1118:30 -

2 stops19h 45m

Fri 6/1106:45 -

2 stops16h 35m

Deal found 16/10£530

Thu 10/1219:10 -

1 stop14h 50m

Fri 18/1219:30 -

1 stop27h 15m

Deal found 17/10£531

Mon 23/1115:55 -

1 stop10h 35m

Tue 1/1207:15 -

1 stop12h 55m

Deal found 16/10£531

Tue 10/1118:30 -

2 stops17h 35m

Thu 10/1207:55 -

2 stops15h 25m

Deal found 21/10£532

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 21 October 2026.

Tue 1/1219:10 -

1 stop14h 50m

Fri 4/1219:50 -

2 stops26h 55m

Deal found 18/10£585

Tue 16/312:45 -

1 stop16h 10m

Tue 23/317:20 -

1 stop31h 00m

Deal found 20/10£623

Sun 15/1113:55 -

1 stop11h 15m

Tue 24/1106:50 -

1 stop11h 20m

Deal found 17/10£674

Tue 15/1218:40 -

Nonstop7h 55m

Thu 24/1216:30 -

Nonstop9h 05m

Deal found 20/10£728

Fri 4/1206:20 -

2 stops20h 40m

Mon 7/1210:00 -

2 stops19h 56m

Deal found 19/10£765

Wed 24/311:00 -

2 stops17h 50m

Thu 25/316:00 -

1 stop29h 30m

Deal found 16/10£776

Tue 3/1113:50 -

2 stops20h 35m

Thu 12/1117:25 -

2 stops53h 55m

Deal found 18/10£958

Wed 3/311:00 -

2 stops16h 50m

Mon 8/310:40 -

3 stops27h 09m

Deal found 20/10£996

Thu 11/213:55 -

2 stops15h 00m

Mon 15/211:55 -

1 stop11h 25m

Deal found 18/10£1,121

Fri 11/1219:10 -

2 stops31h 45m

Thu 17/1206:40 -

1 stop16h 05m

Deal found 16/10£586

Wed 4/1112:45 -

1 stop21h 35m

Tue 10/1117:20 -

1 stop22h 40m

Deal found 16/10£645

Fri 11/1219:10 -

2 stops31h 45m

Wed 16/1207:05 -

2 stops15h 50m

Deal found 18/10£612

Tue 8/1215:45 -

Nonstop8h 10m

Wed 13/107:40 -

Nonstop9h 05m

Deal found 20/10£698

Thu 28/111:45 -

1 stop22h 35m

Tue 2/217:20 -

1 stop31h 00m

Deal found 21/10£645

Wed 27/107:00 -

2 stops20h 20m

Wed 3/217:30 -

2 stops29h 15m

Deal found 19/10£615

Thu 14/111:45 -

1 stop16h 10m

Tue 19/117:20 -

1 stop22h 40m

Deal found 19/10£645

Tue 1/1219:10 -

2 stops20h 25m

Fri 11/1207:05 -

2 stops15h 40m

Deal found 18/10£628

Wed 27/111:45 -

1 stop16h 10m

Fri 5/217:20 -

1 stop31h 00m

Deal found 21/10£645

Wed 18/1119:10 -

1 stop14h 50m

Mon 23/1106:40 -

2 stops16h 05m

Deal found 19/10£633

Thu 5/1112:45 -

1 stop21h 35m

Tue 10/1117:20 -

1 stop22h 40m

Deal found 18/10£645

Tue 13/411:00 -

2 stops16h 50m

Wed 28/421:15 -

3 stops28h 20m

Deal found 18/10£952

Thu 25/316:45 -

2 stops22h 50m

Fri 2/421:15 -

2 stops24h 45m

Deal found 17/10£1,032

Mon 15/312:45 -

1 stop22h 35m

Thu 25/310:55 -

1 stop29h 05m

Deal found 18/10£645

Tue 10/1110:35 -

2 stops23h 25m

Tue 17/1118:05 -

2 stops28h 40m

Deal found 16/10£650

Sat 27/311:00 -

3 stops27h 25m

Sat 3/416:30 -

1 stop29h 30m

Deal found 17/10£983

Wed 31/311:20 -

1 stop23h 25m

Tue 20/417:50 -

1 stop21h 45m

Deal found 16/10£648

Sat 13/319:10 -

2 stops20h 10m

Sun 21/319:30 -

1 stop27h 15m

Deal found 20/10£667

Thu 18/311:00 -

2 stops23h 50m

Sun 28/321:15 -

2 stops32h 27m

Deal found 20/10£1,134

Sat 30/111:45 -

1 stop16h 10m

Fri 5/210:55 -

1 stop37h 25m

Deal found 16/10£652

Wed 23/1219:00 -

1 stop14h 05m

Mon 28/1221:35 -

2 stops51h 23m

Deal found 18/10£1,150

Find flight deals from Chicago to London

Round-trip from	£526
One-way from	£237
Popular in	June
Cheapest in	February
Average price	£665
Good round-trip deal	£716 or less
Good one-way deal	£278 or less

30/12-9/1
3 total stops
59h 50m total
Chicago to London

Search Deals

25/11-31/12
2 total stops
17h 15m total
Chicago to London

Search Deals

Highest demand for flights based on searches. 21% potential increase in price (£133 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 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

Sun 31/1

21:50-11:35

Nonstop7h 45m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£243

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Sun 17/1

10:00-06:20

2 stops14h 20m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£246

ChicagoLondon

ORD Chicago O'Hare Intl - LGW London Gatwick

ORDLGW

Chicago O'Hare Intl

Sun 14/2

07:10-09:00

2 stops19h 50m

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 6/11

20:10-12:00

3 stops57h 50m

London Stansted

Wed 31/12

00:00-17:00

Nonstop0h 00m

£252

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Mon 23/11

22:00-13:35

3 stops57h 35m

London Stansted

Wed 31/12

00:00-17:00

Nonstop0h 00m

£258

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Fri 29/1

21:00-21:50

1 stop18h 50m

London Stansted

Wed 31/12

00:00-17:00

Nonstop0h 00m

£270

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Sat 20/3

16:45-05:55

Nonstop8h 10m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£281

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Thu 4/3

12:40-09:10

2 stops14h 30m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£284

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Fri 15/1

14:26-10:50

2 stops14h 24m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£284

ChicagoLondon

ORD Chicago O'Hare Intl - LGW London Gatwick

ORDLGW

Chicago O'Hare Intl

Sat 30/1

18:10-15:45

2 stops15h 35m

London Gatwick

Wed 31/12

00:00-17:00

Nonstop0h 00m

£287

Flights are sorted by cheapest return flights first.

Deals found on 16/10

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 £467). Flying from Chicago to London in June is currently the most expensive (average of £1,035). 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.

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 £503 and £729 in December.
The cheapest return price found within the last 5 days was £526 on Multiple Airlines (30 Dec–9 Jan).

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

Dublin (DUB) – chosen by Cheapflights users on 44% 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 £565.

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 23% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 161 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, American Airlines have had the lowest number of delays on this route, with just 22% 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 28 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,United Airlines, andAmerican Airlines 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

1,851 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

1,851 reviews

Aer Lingus

7.3

Good

1,851 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.

United Airlines

7.3

Good

10,396 reviews

Aer Lingus

7.3

Good

1,851 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

12,181 reviews

Aer Lingus

7.3

Good

1,851 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

3,244 reviews

Aer Lingus

7.3

Good

1,851 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

8,269 reviews

Aer Lingus

7.3

Good

1,851 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?
Scandinavian Airlines, Turkish Airlines, and Virgin Atlantic can get you from Chicago to London in just under 14h 50m. Your travel time can differ by up to 5h 50m. 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 £366 on this airline. Additional options worth looking into are British Airways and Aer Lingus, starting at £455 and £461 round-trip. These flights start at 44% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Chicago to London one-way?
£288 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on Lufthansa and British Airways, with prices starting from £293 and £298, respectively.
What are the most popular routes from Chicago to London?
The most popular route from Chicago to London is Chicago O'Hare Intl - London Heathrow. You may also consider Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London Stansted.
What are the most reliable airlines from Chicago to London?
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 (85%), Air Canada (80%), Austrian Airlines (80%).
What are the cheapest flights from Chicago to London?
On average you can expect to pay £754 for a flight from Chicago to London. The cheapest flight overall is £273 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £442.
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 £467). Flying from Chicago to London in June is currently the most expensive (average of £1,035). 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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Top 7 airlines flying from Chicago to London

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£366	Average£565	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£455	Average£739	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£461	Average£811	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
American Airlines	Cheapest£491	Average£857	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	Cheapest£511	Average£917	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Iberia	Cheapest£521	Average£707	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
JetBlue	Cheapest£745	Average£886	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 £237

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/11. 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 21 October 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 21 October 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 21 October 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 21 October 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 21 October 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 21 October 2026.

Last-minute flights from Chicago to LondonDiscover last-minute flight deals from Chicago to London. Data last updated 21 October 2026 and is based on user searches.

Discover last-minute flight deals from Chicago to London. Data last updated 21 October 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 21 October 2026.

Search for one-way flight options from Chicago to London. Find affordable one-way fares based on user searches. Data last updated 21 October 2026.

Find flight deals from Chicago to London

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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 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 21 October 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.

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 £503 and £729 in December.The cheapest return price found within the last 5 days was £526 on Multiple Airlines (30 Dec–9 Jan).

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 44% 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 £565.

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 23% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 161 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, American Airlines have had the lowest number of delays on this route, with just 22% 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 28 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,United Airlines, andAmerican Airlines 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?

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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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Other flights to London

Cheapest flights from Chicago to London
Explore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 October 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 21 October 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 21 October 2026.

Last-minute flights from Chicago to London
Discover last-minute flight deals from Chicago to London. Data last updated 21 October 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 21 October 2026.

Chicago to London flights typically cost between £503 and £729 in December.
The cheapest return price found within the last 5 days was £526 on Multiple Airlines (30 Dec–9 Jan).