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Cheap flights from Chicago to London, ON from C$ 274

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YXU
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

C$ 468

One-way from

C$ 274
WestJet
  • WestJet
  • 9/10-15/10
  • 2 total stops
  • 32h 25m total
  • Chicago to London
Search Deals
31/10
  • 31/10
  • 3 total stops
  • 47h 33m 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 17 September 2025.

Thu 9/105:30 p.m.ORD - YXU
1 stop10h 42mWestJet
Wed 15/108:00 p.m.YXU - ORD
1 stop21h 43mWestJet
Deal found 16/9C$ 468
Fri 31/103:55 p.m.ORD - YXU
1 stop4h 26mAir Canada
Fri 7/119:25 a.m.YXU - ORD
1 stop6h 45mAir Canada
Deal found 16/9C$ 825
Sat 1/1110:00 a.m.ORD - YXU
1 stop6h 05mAir Canada
Sat 8/115:15 a.m.YXU - ORD
2 stops7h 03mAir Canada
Deal found 17/9C$ 834
Thu 9/109:55 a.m.ORD - YXU
1 stop4h 07mAir Canada
Wed 15/106:15 a.m.YXU - ORD
2 stops9h 33mAir Canada
Deal found 16/9C$ 912
Sat 1/112:00 p.m.ORD - YXU
1 stop6h 21mUnited Airlines
Sat 8/119:25 a.m.YXU - ORD
1 stop6h 45mUnited Airlines
Deal found 16/9C$ 929
Fri 31/1011:02 a.m.ORD - YXU
2 stops9h 19mUnited Airlines
Fri 7/115:40 p.m.YXU - ORD
2 stops7h 03mUnited Airlines
Deal found 16/9C$ 1,004
Thu 9/106:00 a.m.ORD - YXU
2 stops8h 02mUnited Airlines
Wed 15/103:40 p.m.YXU - ORD
2 stops8h 35mUnited Airlines
Deal found 16/9C$ 1,044
Fri 31/107:51 p.m.ORD - YXU
3 stops47h 21mMultiple Airlines
Fri 7/118:10 p.m.YXU - ORD
3 stops28h 32mMultiple Airlines
Deal found 16/9C$ 1,102
Sat 1/114:45 p.m.ORD - YXU
3 stops26h 27mMultiple Airlines
Sat 8/115:05 p.m.YXU - ORD
2 stops30h 36mMultiple Airlines
Deal found 17/9C$ 1,416

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 17 September 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

Thu 9/10

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

1 stop10h 42m

London

Wed 15/10

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

1 stop21h 43m

C$ 468

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 1/11

10:00 a.m.-5:05 p.m.

1 stop6h 05m

London

Sat 8/11

9:25 a.m.-3:10 p.m.

1 stop6h 45m

C$ 825

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 31/10

3:55 p.m.-9:21 p.m.

1 stop4h 26m

London

Fri 7/11

9:25 a.m.-3:10 p.m.

1 stop6h 45m

C$ 825

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 9/10

9:55 a.m.-3:02 p.m.

1 stop4h 07m

London

Wed 15/10

6:15 a.m.-2:48 p.m.

2 stops9h 33m

C$ 912

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 1/11

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

1 stop6h 21m

London

Sat 8/11

9:25 a.m.-3:10 p.m.

1 stop6h 45m

C$ 929

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 31/10

11:02 a.m.-9:21 p.m.

2 stops9h 19m

London

Fri 7/11

5:40 p.m.-11:43 p.m.

2 stops7h 03m

C$ 1,004

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 9/10

6:00 a.m.-3:02 p.m.

2 stops8h 02m

London

Wed 15/10

3:40 p.m.-11:15 p.m.

2 stops8h 35m

C$ 1,044

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 31/10

7:51 p.m.-8:12 p.m.

3 stops47h 21m

London

Fri 7/11

8:10 p.m.-11:42 p.m.

3 stops28h 32m

C$ 1,102

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 31/10

7:39 p.m.-8:12 p.m.

3 stops47h 33m

C$ 274

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 29/9

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

1 stop10h 42m

C$ 395

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/9

Showing 1-10 of 12 results
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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.

  • How long is the flight from Chicago to London, Ontario?

    WestJet and Air Canada can get you from Chicago to London, Ontario in just under 6h 05m. Your travel time can differ by up to 4h 37m. There are 565 km between Chicago and London, Ontario. Both multi-stop and direct flights can be found to your destination and back.

  • 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

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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.

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