Find flights
When to book
FAQs

Cheap flights from Chicago to London, ON from C$ 372

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 30/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YXU
19 Aug — 26 Aug1
1 adult

Cheap flight deals from Chicago to London

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to London (YXU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 14 August 2025.

Round-trip from

C$ 393

One-way from

C$ 372
WestJet
  • WestJet
  • 22/9-29/9
  • 2 total stops
  • 22h 25m total
  • Chicago to London
Search Deals
Air Canada
  • Air Canada
  • 30/12
  • 1 total stop
  • 6h 06m total
  • Chicago to London
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 14 August 2025.

Mon 22/95:30 p.m.ORD - YXU
1 stop10h 42mWestJet
Mon 29/96:00 a.m.YXU - ORD
1 stop11h 43mWestJet
Deal found 14/8C$ 393
Mon 22/96:00 a.m.ORD - YXU
2 stops22h 12mMultiple Airlines
Mon 29/96:00 a.m.YXU - ORD
1 stop11h 43mMultiple Airlines
Deal found 14/8C$ 513
Sun 28/95:30 p.m.ORD - YXU
1 stop10h 42mMultiple Airlines
Sun 5/108:00 p.m.YXU - ORD
2 stops27h 43mMultiple Airlines
Deal found 14/8C$ 514
Sat 13/91:40 p.m.ORD - YXU
2 stops14h 32mWestJet
Sat 20/98:00 p.m.YXU - ORD
1 stop21h 43mWestJet
Deal found 14/8C$ 575
Wed 10/911:15 a.m.ORD - YXU
2 stops16h 57mMultiple Airlines
Wed 17/98:00 p.m.YXU - ORD
1 stop21h 43mMultiple Airlines
Deal found 13/8C$ 637
Sat 27/96:44 p.m.ORD - YXU
3 stops33h 28mMultiple Airlines
Sat 4/108:00 p.m.YXU - ORD
3 stops27h 46mMultiple Airlines
Deal found 13/8C$ 664
Wed 5/117:35 a.m.ORD - YXU
3 stops34h 37mMultiple Airlines
Sun 9/118:00 p.m.YXU - ORD
1 stop18h 35mMultiple Airlines
Deal found 13/8C$ 716
Sat 27/91:40 p.m.ORD - YXU
2 stops28h 27mWestJet
Sat 4/108:00 p.m.YXU - ORD
1 stop21h 43mWestJet
Deal found 13/8C$ 736

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 14 August 2025.
Use the filters below to find and compare flights from Chicago to London that are best for you.

Fly from

Chicago

Fly to

London

Route

Depart

Return

Price

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 22/9

5:30 p.m.-5:12 a.m.

1 stop10h 42m

London

Mon 29/9

6:00 a.m.-4:43 p.m.

1 stop11h 43m

C$ 393

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 22/9

6:00 a.m.-5:12 a.m.

2 stops22h 12m

London

Mon 29/9

6:00 a.m.-4:43 p.m.

1 stop11h 43m

C$ 513

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 28/9

5:30 p.m.-5:12 a.m.

1 stop10h 42m

London

Sun 5/10

8:00 p.m.-10:43 p.m.

2 stops27h 43m

C$ 514

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 13/9

1:40 p.m.-5:12 a.m.

2 stops14h 32m

London

Sat 20/9

8:00 p.m.-4:43 p.m.

1 stop21h 43m

C$ 575

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 10/9

11:15 a.m.-5:12 a.m.

2 stops16h 57m

London

Wed 17/9

8:00 p.m.-4:43 p.m.

1 stop21h 43m

C$ 637

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 27/9

6:44 p.m.-5:12 a.m.

3 stops33h 28m

London

Sat 4/10

8:00 p.m.-10:46 p.m.

3 stops27h 46m

C$ 664

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 5/11

7:35 a.m.-7:12 p.m.

3 stops34h 37m

London

Sun 9/11

8:00 p.m.-1:35 p.m.

1 stop18h 35m

C$ 716

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 27/9

1:40 p.m.-7:07 p.m.

2 stops28h 27m

London

Sat 4/10

8:00 p.m.-4:43 p.m.

1 stop21h 43m

C$ 736

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 31/12

2:00 p.m.-9:21 p.m.

1 stop6h 21m

C$ 372

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 1/1

7:15 a.m.-5:06 p.m.

2 stops8h 51m

C$ 372

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/8

Showing 1-10 of 15 results
1
2

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 round-trip 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

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

Currently, October is the cheapest month in which you can book a flight from Chicago to London, Ontario (average of C$ 243). Flying from Chicago to London, Ontario in December is currently the most expensive (average of C$ 478). 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.

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 airport do you fly into for flights to London from Chicago?

    Most people fly into London (YXU) if they book a flight to London from Chicago. On average, London has 0 inbound flights from Chicago per day from 0 airlines. London is conveniently located just 8.6 km from London’s city centre.

  • 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 vacation 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, Ontario?

    Currently, October is the cheapest month in which you can book a flight from Chicago to London, Ontario (average of C$ 243). Flying from Chicago to London, Ontario in December is currently the most expensive (average of C$ 478). 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend
Port Stanley

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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

Deals for Chicago to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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?

Certainly. Search results for flights to London from Chicago shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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.