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 16h 15m. Your travel time can differ by up to 6h 20m. There are 3942 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 £359 on this airline. Additional options worth looking into are American Airlines and British Airways, starting at £379 and £416 round-trip. These flights start at 41% lower than the current average price 3 months from now.

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

£162 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Lufthansa and British Airways, with prices starting from £271 and £283, 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 £1,343 for a flight from Chicago to London. The cheapest flight overall is £244 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £397.

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: Air Canada (62%), Austrian Airlines (62%), United Airlines (62%).

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 Thursday

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 23 August 2026.

Tue 6/1019:15 -

3 stops19h 20m

Tue 13/1015:05 -

2 stops31h 05m

Deal found 22/8£481

Mon 5/1015:45 -

1 stop10h 10m

Mon 19/1008:40 -

1 stop16h 35m

Deal found 21/8£482

Tue 1/1206:15 -

1 stop17h 45m

Tue 8/1210:10 -

1 stop33h 01m

Deal found 21/8£484

Fri 9/1019:15 -

2 stops42h 40m

Mon 12/1006:40 -

1 stop15h 30m

Deal found 21/8£484

Tue 6/1019:25 -

2 stops20h 55m

Tue 13/1008:30 -

2 stops15h 45m

Deal found 22/8£485

Wed 30/919:25 -

2 stops16h 15m

Tue 2/209:50 -

1 stop15h 25m

Deal found 21/8£486

Wed 18/1119:15 -

2 stops18h 55m

Wed 25/1117:40 -

2 stops29h 05m

Deal found 19/8£486

Wed 16/922:25 -

2 stops15h 55m

Sun 20/906:35 -

1 stop18h 40m

Deal found 21/8£486

Thu 5/1118:30 -

2 stops21h 15m

Tue 10/1107:00 -

2 stops16h 20m

Deal found 22/8£487

Wed 30/919:25 -

2 stops16h 15m

Mon 5/1007:40 -

1 stop17h 35m

Deal found 21/8£487

Thu 3/1214:31 -

1 stop35h 44m

Sun 6/1212:35 -

1 stop30h 36m

Deal found 21/8£487

Sun 20/922:25 -

2 stops26h 20m

Mon 5/1022:45 -

1 stop21h 15m

Deal found 21/8£487

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 23 August 2026.

Thu 3/1219:15 -

2 stops18h 40m

Mon 7/1210:20 -

1 stop12h 25m

Deal found 20/8£528

Wed 9/1217:50 -

1 stop10h 15m

Fri 11/1207:40 -

1 stop16h 45m

Deal found 22/8£538

Thu 11/211:45 -

1 stop22h 35m

Tue 16/217:20 -

1 stop22h 40m

Deal found 19/8£612

Wed 2/1209:30 -

1 stop16h 15m

Wed 9/1210:00 -

2 stops18h 56m

Deal found 21/8£636

Tue 22/918:35 -

Nonstop8h 25m

Mon 28/912:10 -

1 stop30h 25m

Deal found 18/8£640

Tue 3/1118:25 -

1 stop15h 20m

Tue 10/1110:00 -

1 stop12h 15m

Deal found 18/8£648

Mon 18/117:10 -

Nonstop7h 45m

Wed 20/111:00 -

Nonstop8h 45m

Deal found 20/8£654

Tue 9/218:50 -

2 stops17h 50m

Tue 16/208:35 -

1 stop13h 40m

Deal found 20/8£662

Wed 21/1012:49 -

1 stop11h 36m

Wed 28/1012:40 -

1 stop14h 53m

Deal found 22/8£672

Tue 29/909:38 -

2 stops18h 07m

Wed 7/1016:25 -

1 stop26h 15m

Deal found 19/8£725

Sun 1/1118:30 -

2 stops14h 20m

Sun 8/1115:35 -

2 stops31h 45m

Deal found 23/8£542

Fri 2/1019:15 -

2 stops17h 50m

Mon 12/1019:45 -

2 stops26h 25m

Deal found 20/8£544

Tue 29/911:25 -

1 stop23h 25m

Wed 7/1010:50 -

1 stop28h 50m

Deal found 20/8£612

Wed 25/1115:45 -

Nonstop8h 10m

Mon 30/1113:45 -

1 stop32h 30m

Deal found 18/8£648

Sun 17/117:10 -

Nonstop7h 45m

Tue 26/111:00 -

Nonstop8h 45m

Deal found 22/8£654

Wed 9/1217:14 -

1 stop12h 26m

Fri 11/1212:55 -

2 stops16h 00m

Deal found 22/8£662

Wed 9/1218:25 -

1 stop15h 20m

Sun 13/1210:00 -

1 stop12h 15m

Deal found 18/8£670

Mon 28/919:25 -

2 stops15h 40m

Wed 7/1006:30 -

2 stops17h 45m

Deal found 17/8£555

Thu 26/1120:15 -

1 stop31h 40m

Thu 3/1217:20 -

1 stop31h 00m

Deal found 19/8£612

Mon 8/218:50 -

1 stop15h 30m

Sun 21/220:05 -

1 stop26h 10m

Deal found 20/8£675

Mon 19/1016:50 -

1 stop10h 00m

Sat 31/1008:40 -

1 stop11h 45m

Deal found 21/8£698

Sun 17/117:45 -

Nonstop8h 10m

Fri 22/107:40 -

Nonstop9h 05m

Deal found 22/8£654

Wed 3/220:15 -

1 stop38h 05m

Wed 17/210:55 -

1 stop37h 25m

Deal found 22/8£613

Tue 20/1009:29 -

2 stops14h 56m

Wed 28/1012:40 -

1 stop14h 53m

Deal found 22/8£676

Mon 30/1113:22 -

2 stops20h 23m

Mon 7/1210:00 -

2 stops18h 56m

Deal found 20/8£681

Mon 12/1014:15 -

2 stops22h 50m

Fri 16/1008:00 -

2 stops17h 55m

Deal found 20/8£563

Mon 9/1114:15 -

2 stops19h 30m

Tue 17/1121:20 -

2 stops24h 10m

Deal found 22/8£773

Sat 16/115:45 -

Nonstop8h 10m

Wed 27/111:10 -

1 stop13h 15m

Deal found 20/8£670

Wed 21/1009:29 -

2 stops14h 56m

Wed 28/1009:40 -

2 stops17h 53m

Deal found 22/8£676

Fri 2/1012:35 -

1 stop11h 50m

Mon 5/1015:15 -

1 stop13h 29m

Deal found 19/8£744

Find flight deals from Chicago to London

Round-trip from	£481
One-way from	£226
Popular in	June
Cheapest in	February
Average price	£659
Good round-trip deal	£681 or less
Good one-way deal	£409 or less

6/10-13/10
5 total stops
50h 25m total
Chicago to London

Search Deals

Icelandair
7/10
1 total stop
15h 55m total
Chicago to London

Search Deals

Highest demand for flights based on searches. 24% potential increase in price (£143 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (£28 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from 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

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Thu 3/12

19:15-19:55

2 stops18h 40m

London Heathrow

Mon 7/12

10:20-16:45

1 stop12h 25m

£528

ChicagoLondon

ORD Chicago O'Hare Intl - LHR London Heathrow

ORDLHR

Chicago O'Hare Intl

Wed 9/12

17:50-10:05

1 stop10h 15m

London Heathrow

Fri 11/12

07:40-18:25

1 stop16h 45m

£538

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Sun 1/11

18:30-14:50

2 stops14h 20m

London Southend

Sun 8/11

15:35-17:20

2 stops31h 45m

£542

ChicagoLondon

ORD Chicago O'Hare Intl - LTN London Luton

ORDLTN

Chicago O'Hare Intl

Fri 2/10

19:15-19:05

2 stops17h 50m

London Luton

Mon 12/10

19:45-16:10

2 stops26h 25m

£544

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Mon 28/9

19:25-17:05

2 stops15h 40m

London Stansted

Wed 7/10

06:30-18:15

2 stops17h 45m

£555

ChicagoLondon

ORD Chicago O'Hare Intl - LTN London Luton

ORDLTN

Chicago O'Hare Intl

Mon 12/10

14:15-19:05

2 stops22h 50m

London Luton

Fri 16/10

08:00-19:55

2 stops17h 55m

£563

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Thu 11/2

11:45-16:20

1 stop22h 35m

London Stansted

Tue 16/2

17:20-10:00

1 stop22h 40m

£612

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Tue 29/9

11:25-16:50

1 stop23h 25m

London Stansted

Wed 7/10

10:50-09:40

1 stop28h 50m

£612

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Thu 26/11

20:15-09:55

1 stop31h 40m

London Stansted

Thu 3/12

17:20-18:20

1 stop31h 00m

£612

ChicagoLondon

ORD Chicago O'Hare Intl - STN London Stansted

ORDSTN

Chicago O'Hare Intl

Wed 3/2

20:15-16:20

1 stop38h 05m

London Stansted

Wed 17/2

10:55-18:20

1 stop37h 25m

£613

Flights are sorted by cheapest return flights first.

Deals found on 20/8

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-STN

MDW-LHR

ORD-LGW

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-STN

MDW-LHR

ORD-LGW

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 £489). Flying from Chicago to London in June is currently the most expensive (average of £1,013). 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 Friday (54 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (40 on average).

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

Airfare is below average for this route at the moment.

Chicago to London flights typically cost between £513 and £718 in October.
The cheapest return price found within the last 5 days was £481 on Multiple Airlines (6 Oct–13 Oct).

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

Dublin (DUB) – chosen by Cheapflights users on 45% of one-stop itineraries from Chicago to London on Cheapflights.

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

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £307.

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 20m.

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 55m.

How often are flights from Chicago to London delayed?

About 25% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 170 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 in the morning 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 24% 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 9 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 United Airlines,Aer Lingus, 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.

United Airlines

7.4

Good

10,113 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible

United Airlines

7.4

Good

10,113 reviews

United Airlines

7.4

Good

10,113 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Dawn,Aug 2026

ORD - DEN

Aer Lingus

7.3

Good

1,717 reviews

United Airlines

7.4

Good

10,113 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Dawn,Aug 2026

ORD - DEN

American Airlines

7.1

Good

11,983 reviews

United Airlines

7.4

Good

10,113 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Dawn,Aug 2026

ORD - DEN

Lufthansa

6.8

Okay

8,211 reviews

United Airlines

7.4

Good

10,113 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Dawn,Aug 2026

ORD - DEN

British Airways

6.7

Okay

8,185 reviews

United Airlines

7.4

Good

10,113 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Dawn,Aug 2026

ORD - DEN

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 16h 15m. Your travel time can differ by up to 6h 20m. There are 3942 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 £359 on this airline. Additional options worth looking into are American Airlines and British Airways, starting at £379 and £416 round-trip. These flights start at 41% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Chicago to London one-way?
£162 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Lufthansa and British Airways, with prices starting from £271 and £283, 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: Air Canada (62%), Austrian Airlines (62%), United Airlines (62%).
What are the cheapest flights from Chicago to London?
On average you can expect to pay £1,343 for a flight from Chicago to London. The cheapest flight overall is £244 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £397.
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 £489). Flying from Chicago to London in June is currently the most expensive (average of £1,013). 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£359	Average£553	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
American Airlines	Cheapest£379	Average£811	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
British Airways	Cheapest£416	Average£615	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£452	Average£794	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
United Airlines	Cheapest£500	Average£797	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Iberia	Cheapest£510	Average£685	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
JetBlue	Cheapest£729	Average£868	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 one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. 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 23 August 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 23 August 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 23 August 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 23 August 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 23 August 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 23 August 2026.

Last-minute flights from Chicago to LondonDiscover last-minute flight deals from Chicago to London. Data last updated 23 August 2026 and is based on user searches.

Discover last-minute flight deals from Chicago to London. Data last updated 23 August 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 23 August 2026.

Search for one-way flight options from Chicago to London. Find affordable one-way fares based on user searches. Data last updated 23 August 2026.

Find flight deals from Chicago to London

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One-way from

Popular in

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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 23 August 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 23 August 2026.

The most flights from CHI to LON are scheduled on a Friday (54 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (40 on average).

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

Airfare is below average for this route at the moment.

Chicago to London flights typically cost between £513 and £718 in October.The cheapest return price found within the last 5 days was £481 on Multiple Airlines (6 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 45% 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.

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £307.

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 20m.

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 55m.

How often are flights from Chicago to London delayed?

About 25% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 170 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 in the morning 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 24% 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 9 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 United Airlines,Aer Lingus, 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

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What are the cheapest flights from Chicago to London?

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

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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

Book a non-stop flight to one of these other cities located in England.

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 23 August 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 23 August 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 23 August 2026.

Last-minute flights from Chicago to London
Discover last-minute flight deals from Chicago to London. Data last updated 23 August 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 23 August 2026.

Chicago to London flights typically cost between £513 and £718 in October.
The cheapest return price found within the last 5 days was £481 on Multiple Airlines (6 Oct–13 Oct).