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

Our cheapest airline available from Chicago to London is Iberia. Our recent data shows that you can find tickets from as low as £477 on this airline. Additional options worth looking into are Scandinavian Airlines and Icelandair, starting at £481 and £482 round-trip. These flights start at 22% lower than the current average price 3 months from now.

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

£205 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on JetBlue and SWISS, with prices starting from £223 and £255, respectively.

What is the cheapest day to fly from Chicago to London?

Travellers seeking maximum savings on their Chicago to London flight should consider departing on Wednesday mornings when fares are most often at their lowest. Wednesday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 £3,343 for a flight from Chicago to London. The cheapest flight overall is £318 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £368.

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: Aer Lingus (70%), Iberia (68%), American Airlines (66%).

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

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

What is the cheapest day to fly round-trip from Chicago to London?

Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 21% on your flight compared to booking on days when demand is much higher.

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

To save on the cost of your flight from Chicago to London, book at least 60 days before your planned departure. Booking around this time can save you about 18% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £595 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £682.

What is the cheapest month to fly from Chicago to London?

Our data shows that February tends to be the cheapest month to fly to London from Chicago. Users have commonly found prices around £617 for the month, but tickets can be as low as £355. Due to multiple factors, prepare for potentially higher prices in June.

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.

£202+ Flights from Chicago to London

The best prices from Chicago to London are usually found in February or November, booked 68 days in advance, depart on a Saturday or Monday and return on a Wednesday

Cheap flight deals from Chicago to London

Round-trip from	£477
One-way from	£202
Popular in	June
Cheapest in	February
Average price	£546
Good round-trip deal	£557 or less
Good one-way deal	£393 or less

Iberia
26/2-25/3
1 total stop
18h 52m total
Chicago to London

Search Deals

1/3
2 total stops
38h 29m total
Chicago to London

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£118 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in January 2025

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

Find flight deals from Chicago 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 22 January 2025.

Wed 26/217:18ORD - LHR

1 stop10h 02mIberia

Wed 26/313:50LHR - ORD

Nonstop8h 50mIberia

Deal found 21/1£477

Sat 1/219:40ORD - LHR

2 stops14h 45mScandinavian Airlines

Sun 9/221:05LHR - ORD

2 stops26h 45mScandinavian Airlines

Deal found 21/1£481

Wed 22/119:15ORD - LHR

1 stop17h 40mTAP AIR PORTUGAL

Fri 31/106:00LHR - ORD

1 stop15h 30mTAP AIR PORTUGAL

Deal found 21/1£481

Wed 26/205:15ORD - LGW

2 stops26h 15mMultiple Airlines

Tue 25/312:00LGW - ORD

1 stop23h 36mMultiple Airlines

Deal found 21/1£481

Tue 22/419:30ORD - LGW

1 stop13h 10mIcelandair

Tue 29/415:40LGW - ORD

1 stop32h 40mIcelandair

Deal found 21/1£482

Thu 20/218:30ORD - STN

2 stops16h 10mMultiple Airlines

Thu 27/206:00STN - ORD

2 stops17h 20mMultiple Airlines

Deal found 21/1£483

Fri 4/419:30ORD - LHR

1 stop10h 25mIcelandair

Tue 8/421:25LHR - ORD

1 stop26h 55mIcelandair

Deal found 21/1£485

Sun 9/321:25ORD - LGW

2 stops18h 15mTAP AIR PORTUGAL

Thu 13/310:40LGW - ORD

1 stop34h 50mTAP AIR PORTUGAL

Deal found 21/1£485

Wed 23/417:50ORD - LHR

Nonstop7h 30mFinnair

Thu 1/509:30LHR - ORD

1 stop14h 20mFinnair

Deal found 21/1£486

Wed 5/315:55ORD - LTN

1 stop10h 40mMultiple Airlines

Wed 12/306:50LTN - ORD

1 stop13h 10mMultiple Airlines

Deal found 21/1£488

Mon 22/913:06ORD - LGW

1 stop13h 04mBritish Airways

Tue 7/1015:05LGW - ORD

1 stop23h 39mBritish Airways

Deal found 21/1£500

Wed 5/313:16MDW - LGW

2 stops25h 59mMultiple Airlines

Wed 12/312:00LGW - MDW

1 stop32h 13mMultiple Airlines

Deal found 21/1£506

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 22 January 2025.

Wed 26/217:18ORD - LHR

1 stop10h 02mIberia

Tue 25/311:55LHR - ORD

Nonstop8h 50mIberia

Deal found 21/1£477

Sat 1/219:40ORD - LHR

2 stops14h 45mScandinavian Airlines

Sun 9/221:05LHR - ORD

2 stops26h 45mScandinavian Airlines

Deal found 21/1£481

Wed 26/205:15ORD - LGW

2 stops26h 15mMultiple Airlines

Tue 25/312:00LGW - ORD

1 stop23h 36mMultiple Airlines

Deal found 21/1£481

Tue 22/419:30ORD - LGW

1 stop13h 10mIcelandair

Tue 29/415:40LGW - ORD

1 stop32h 40mIcelandair

Deal found 21/1£482

Sun 9/321:25ORD - LGW

2 stops18h 15mTAP AIR PORTUGAL

Thu 13/310:40LGW - ORD

1 stop34h 50mTAP AIR PORTUGAL

Deal found 21/1£485

Tue 4/211:35ORD - LHR

2 stops18h 15mAir Canada

Tue 18/206:50LHR - ORD

2 stops19h 05mAir Canada

Deal found 20/1£503

Tue 4/314:08MDW - LHR

1 stop10h 42mAir France

Wed 12/309:10LHR - MDW

1 stop14h 08mAir France

Deal found 19/1£503

Sun 2/217:00ORD - LHR

Nonstop7h 50mFinnair

Tue 11/215:45LHR - ORD

Nonstop9h 00mFinnair

Deal found 21/1£503

Tue 4/314:08MDW - LHR

1 stop10h 42mVirgin Atlantic

Tue 11/309:10LHR - MDW

1 stop14h 08mVirgin Atlantic

Deal found 20/1£507

Sat 1/207:00ORD - LHR

1 stop16h 55mJetBlue

Wed 12/208:25LHR - ORD

1 stop15h 30mJetBlue

Deal found 21/1£512

Tue 4/318:30ORD - LHR

1 stop10h 40mDelta

Wed 12/306:30LHR - ORD

2 stops14h 45mDelta

Deal found 21/1£516

Mon 24/211:55ORD - LGW

1 stop22h 05mTurkish Airlines

Wed 5/316:55LGW - ORD

1 stop23h 15mTurkish Airlines

Deal found 21/1£520

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 22 January 2025.

Tue 11/218:35ORD - LHR

Nonstop7h 40mIberia

Tue 18/211:55LHR - ORD

Nonstop8h 50mIberia

Deal found 21/1£478

Tue 4/317:00ORD - LHR

Nonstop7h 50mBritish Airways

Wed 12/315:45LHR - ORD

Nonstop9h 00mBritish Airways

Deal found 19/1£486

Sun 2/217:00ORD - LHR

Nonstop7h 50mFinnair

Tue 11/215:45LHR - ORD

Nonstop9h 00mFinnair

Deal found 21/1£503

Wed 5/321:10ORD - LHR

Nonstop8h 05mUnited Airlines

Wed 12/313:35LHR - ORD

Nonstop9h 25mUnited Airlines

Deal found 21/1£538

Fri 7/321:10ORD - LHR

Nonstop8h 05mLufthansa

Fri 14/310:25LHR - ORD

Nonstop9h 25mLufthansa

Deal found 20/1£634

Last-minute flights from Chicago to London
Discover last-minute flight deals from Chicago to London. Data last updated 22 January 2025 and is based on user searches.

Wed 22/119:15ORD - LHR

1 stop17h 40mTAP AIR PORTUGAL

Fri 31/106:00LHR - ORD

1 stop15h 30mTAP AIR PORTUGAL

Deal found 21/1£481

Sun 26/120:25ORD - LHR

1 stop15h 05mTAP AIR PORTUGAL

Fri 31/106:00LHR - ORD

1 stop15h 30mTAP AIR PORTUGAL

Deal found 21/1£488

Sun 26/107:00ORD - LHR

1 stop16h 55mJetBlue

Tue 4/208:25LHR - ORD

1 stop15h 30mJetBlue

Deal found 20/1£505

Mon 27/117:20ORD - LHR

1 stop10h 00mIberia

Tue 4/211:55LHR - ORD

Nonstop8h 50mIberia

Deal found 20/1£489

Mon 27/118:30ORD - LHR

1 stop19h 00mIcelandair

Fri 31/120:40LHR - ORD

1 stop26h 40mIcelandair

Deal found 21/1£497

Mon 27/117:00ORD - LHR

Nonstop7h 50mFinnair

Tue 4/211:00LHR - ORD

Nonstop8h 55mFinnair

Deal found 20/1£501

Mon 27/114:08MDW - LHR

1 stop10h 42mVirgin Atlantic

Tue 4/212:20LHR - MDW

1 stop11h 51mVirgin Atlantic

Deal found 20/1£504

Tue 28/107:00ORD - LGW

1 stop17h 00mMultiple Airlines

Tue 4/212:00LGW - ORD

1 stop23h 31mMultiple Airlines

Deal found 21/1£494

Tue 28/118:30ORD - LTN

2 stops21h 30mMultiple Airlines

Tue 4/207:10LTN - ORD

2 stops16h 10mMultiple Airlines

Deal found 21/1£503

Tue 28/108:00ORD - LHR

3 stops27h 30mMultiple Airlines

Tue 11/208:15LHR - ORD

2 stops32h 50mMultiple Airlines

Deal found 19/1£508

Thu 30/119:40ORD - LHR

2 stops14h 45mScandinavian Airlines

Sun 2/215:35LHR - ORD

2 stops32h 15mScandinavian Airlines

Deal found 20/1£490

Thu 30/118:30ORD - STN

2 stops23h 10mMultiple Airlines

Sun 2/211:20STN - ORD

2 stops36h 00mMultiple Airlines

Deal found 21/1£495

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 22 January 2025.

Sat 1/316:21ORD - LHR

2 stops38h 29mMultiple Airlines

Deal found 20/1£202

Sun 23/218:30ORD - LHR

1 stop10h 20mIcelandair

Deal found 20/1£205

Mon 3/205:50ORD - LGW

2 stops25h 30mMultiple Airlines

Deal found 20/1£205

Thu 6/207:25MDW - LGW

2 stops30h 00mMultiple Airlines

Deal found 21/1£207

Sat 15/220:44MDW - LHR

2 stops58h 06mMultiple Airlines

Deal found 20/1£209

Wed 29/107:00ORD - LTN

2 stops45h 20mMultiple Airlines

Deal found 21/1£211

Thu 6/207:25MDW - LTN

2 stops27h 50mMultiple Airlines

Deal found 21/1£216

Mon 10/317:22ORD - STN

3 stops48h 48mMultiple Airlines

Deal found 21/1£216

Mon 27/118:30ORD - LGW

1 stop10h 25mIcelandair

Deal found 21/1£220

Wed 12/207:00ORD - LHR

1 stop16h 55mJetBlue

Deal found 21/1£223

Mon 3/207:15MDW - STN

3 stops20h 45mMultiple Airlines

Deal found 20/1£249

Tue 18/219:05ORD - LHR

1 stop11h 55mSWISS

Deal found 19/1£255

Find flights from Chicago to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 26/2

17:18-09:20

1 stop10h 02m

London Heathrow

Tue 25/3

11:55-15:45

Nonstop8h 50m

£477

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sat 1/2

19:40-16:25

2 stops14h 45m

London Heathrow

Sun 9/2

21:05-17:50

2 stops26h 45m

£481

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 26/2

05:15-13:30

2 stops26h 15m

London Gatwick

Tue 25/3

12:00-06:36

1 stop23h 36m

£481

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Tue 22/4

19:30-14:40

1 stop13h 10m

London Gatwick

Tue 29/4

15:40-18:20

1 stop32h 40m

£482

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Thu 20/2

18:30-16:40

2 stops16h 10m

London Stansted

Thu 27/2

06:00-17:20

2 stops17h 20m

£483

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 9/3

21:25-20:40

2 stops18h 15m

London Gatwick

Thu 13/3

10:40-16:30

1 stop34h 50m

£485

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 5/3

15:55-08:35

1 stop10h 40m

London Luton

Wed 12/3

06:50-15:00

1 stop13h 10m

£488

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 7/2

18:30-10:50

1 stop10h 20m

London Heathrow

Wed 12/2

20:40-17:20

1 stop26h 40m

£496

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 7/2

20:20-17:30

1 stop15h 10m

London Heathrow

Wed 12/2

06:00-15:30

1 stop15h 30m

£501

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 4/2

11:35-11:50

2 stops18h 15m

London Heathrow

Tue 18/2

06:50-19:55

2 stops19h 05m

£503

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 60 results

...

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.

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.

Travel insights for flights from Chicago to London

Get recent, data-driven insights about flights from Chicago to London including ideal travel times, pricing trends, and more.

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

The best time to book flights from Chicago to London is 68 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.

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 £112). Flying from Chicago to London in August is currently the most expensive (average of £161). 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?

Unlike at midday, when flights are generally more expensive, you can save up to 37% on flights from Chicago to London by exploring options for tickets in the evening.

Weekly flight availability from Chicago to London

The most flights from CHI to LON are scheduled on a Monday (38 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (26 on average).

Rainfall in London by month

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.

Temperature in London by month

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).

Reviews of airlines servicing London

Read reviews from past customers who have flown TAP AIR PORTUGAL, SWISS and Icelandair 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.

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

8,521 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Porter Airlines

7.9

Good

277 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,341 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Transat

7.8

Good

381 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

LOT

7.6

Good

1,117 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Chicago to London round-trip?
Our cheapest airline available from Chicago to London is Iberia. Our recent data shows that you can find tickets from as low as £477 on this airline. Additional options worth looking into are Scandinavian Airlines and Icelandair, starting at £481 and £482 round-trip. These flights start at 22% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Chicago to London one-way?
£205 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on JetBlue and SWISS, with prices starting from £223 and £255, 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: Aer Lingus (70%), Iberia (68%), American Airlines (66%).
What are the cheapest flights from Chicago to London?
On average you can expect to pay £3,343 for a flight from Chicago to London. The cheapest flight overall is £318 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £368.
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 £112). Flying from Chicago to London in August is currently the most expensive (average of £161). 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

Deal

Hounslow

Gatwick

Croydon

Milton Keynes

Slough

Luton

Ilford

Hayes

Eastbourne

Maidstone

Crawley

Winchester

Southend-on-Sea

Wembley

Ipswich

Watford

Southall

Stansted

Sutton

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from Chicago to London

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£331	Average£881	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Finnair	Cheapest£388	Average£754	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
American Airlines	Cheapest£417	Average£817	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Aer Lingus	Cheapest£483	Average£705	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
British Airways	Cheapest£507	Average£707	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£536	Average£718	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
United Airlines	Cheapest£541	Average£718	FlexibilityNo cancel fee	On-time69%	Search United Airlines 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Chicago to London from £202

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Chicago to London are usually found in February or November, booked 68 days in advance, depart on a Saturday or Monday and return on a Wednesday

Cheap flight deals from Chicago to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find 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 22 January 2025.

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 22 January 2025.

Find flights from Chicago to London within your budget

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.

Travel insights for flights from Chicago to London

Get recent, data-driven insights about flights from Chicago to London including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Chicago to London. Price data was last updated on 17 January 2025.

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 22 January 2025.

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 22 January 2025.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

Reviews of airlines servicing London

Read reviews from past customers who have flown TAP AIR PORTUGAL, SWISS and Icelandair 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

Find useful and relevant information for your journey from Chicago to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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 Chicago?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to London

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

Top 7 airlines flying from Chicago to London

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 22 January 2025.