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Cheap flights from Chicago to London, ON from C$ 371

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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YXU
1 May — 8 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chicago to London

Enter your travel dates to find the best prices.

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 1 April 2026.

Mon 25/55:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Thu 28/55:55 p.m.
YXU
-
ORD
1 stop23h 45m
WestJet
Deal found 29/3C$ 801
Tue 2/62:15 p.m.
ORD
-
YXU
1 stop6h 23m
Air Canada
Fri 5/69:30 a.m.
YXU
-
ORD
1 stop6h 25m
Air Canada
Deal found 30/3C$ 815
Fri 17/46:40 p.m.
ORD
-
YXU
1 stop13h 04m
Air Canada
Sun 19/45:10 a.m.
YXU
-
ORD
1 stop5h 00m
Air Canada
Deal found 31/3C$ 848
Fri 15/58:30 a.m.
ORD
-
YXU
2 stops19h 50m
Multiple Airlines
Fri 22/55:55 p.m.
YXU
-
ORD
1 stop23h 45m
Multiple Airlines
Deal found 31/3C$ 854
Thu 14/59:42 p.m.
ORD
-
YXU
2 stops30h 38m
Multiple Airlines
Thu 21/55:55 p.m.
YXU
-
ORD
1 stop23h 45m
Multiple Airlines
Deal found 30/3C$ 887
Mon 11/52:15 p.m.
ORD
-
YXU
1 stop6h 23m
Air Canada
Mon 18/512:20 p.m.
YXU
-
ORD
1 stop5h 39m
Air Canada
Deal found 27/3C$ 890
Sat 23/53:50 p.m.
ORD
-
YXU
1 stop4h 48m
Air Canada
Tue 26/512:20 p.m.
YXU
-
ORD
2 stops8h 48m
Air Canada
Deal found 27/3C$ 903
Fri 22/59:55 a.m.
ORD
-
YXU
1 stop6h 38m
Air Canada
Sat 23/55:10 a.m.
YXU
-
ORD
1 stop4h 55m
Air Canada
Deal found 28/3C$ 932

Find 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 1 April 2026.

Round-trip from

C$ 801

One-way from

C$ 371
WestJet
  • WestJet
  • 25/5-28/5
  • 2 total stops
  • 34h 35m total
  • Chicago to London
Search Deals
Air Canada
  • Air Canada
  • 30/4
  • 1 total stop
  • 6h 19m total
  • Chicago to London
Search Deals

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 1 April 2026.
Use the filters below to find and compare flights from Chicago to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 25/5

2:15 p.m.-9:38 p.m.

1 stop6h 23m

London

Thu 28/5

9:30 a.m.-2:55 p.m.

1 stop6h 25m

C$ 815

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 14/5

2:15 p.m.-9:38 p.m.

1 stop6h 23m

London

Thu 21/5

5:10 a.m.-9:05 a.m.

1 stop4h 55m

C$ 815
Quickest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 2/6

9:55 a.m.-2:58 p.m.

1 stop4h 03m

London

Fri 5/6

12:20 p.m.-4:59 p.m.

1 stop5h 39m

C$ 815

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 14/5

9:42 p.m.-5:20 a.m.

2 stops30h 38m

London

Thu 21/5

5:55 p.m.-4:40 p.m.

1 stop23h 45m

C$ 887
Cheapest one-way

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 30/4

2:00 p.m.-9:19 p.m.

1 stop6h 19m

C$ 371
Quickest one-way

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 15/5

3:50 p.m.-9:38 p.m.

1 stop4h 48m

C$ 372

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 15/5

9:42 p.m.-5:20 a.m.

3 stops30h 38m

C$ 393

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 26/4

7:55 a.m.-5:04 p.m.

1 stop8h 09m

C$ 415

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 30/4

5:15 a.m.-5:20 a.m.

2 stops23h 05m

C$ 436

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 26/4

5:50 a.m.-5:20 a.m.

2 stops22h 30m

C$ 447

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/3

Sorted 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.
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$ 118). Flying from Chicago to London, Ontario in March is currently the most expensive (average of C$ 306). 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?

    Air Canada can get you from Chicago to London, Ontario in just under 6h 23m. Your travel time can differ by up to . There are 565 km between Chicago and London, Ontario.

  • 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$ 118). Flying from Chicago to London, Ontario in March is currently the most expensive (average of C$ 306). 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
Port Stanley
Grand Bend

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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.

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