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Cheap flights from Chicago to London, ON from C$ 411

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YXU
20 Feb — 27 Feb1
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 21 January 2026.

Wed 25/29:18 a.m.
ORD
-
YXU
2 stops20h 17m
Multiple Airlines
Thu 26/28:10 p.m.
YXU
-
ORD
1 stop18h 25m
Multiple Airlines
Deal found 21/1C$ 568
Mon 25/55:30 p.m.
ORD
-
YXU
1 stop10h 42m
WestJet
Thu 28/58:00 p.m.
YXU
-
ORD
1 stop21h 43m
WestJet
Deal found 20/1C$ 671
Sat 23/52:15 p.m.
ORD
-
YXU
1 stop6h 23m
Air Canada
Tue 26/59:30 a.m.
YXU
-
ORD
1 stop6h 25m
Air Canada
Deal found 20/1C$ 924
Wed 25/210:00 a.m.
ORD
-
YXU
1 stop6h 05m
Air Canada
Thu 26/29:25 a.m.
YXU
-
ORD
1 stop6h 45m
Air Canada
Deal found 21/1C$ 925
Tue 17/22:00 p.m.
ORD
-
YXU
1 stop6h 21m
Air Canada
Thu 19/29:25 a.m.
YXU
-
ORD
1 stop6h 45m
Air Canada
Deal found 20/1C$ 964
Fri 13/23:55 p.m.
ORD
-
YXU
1 stop4h 26m
Air Canada
Mon 16/25:10 a.m.
YXU
-
ORD
1 stop5h 03m
Air Canada
Deal found 19/1C$ 1,005

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 21 January 2026.

Round-trip from

C$ 568

One-way from

C$ 411
WestJet
  • WestJet
  • 25/2-26/2
  • 3 total stops
  • 38h 42m total
  • Chicago to London
Search Deals
6/3
  • 6/3
  • 3 total stops
  • 47h 44m 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 21 January 2026.
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

Wed 25/2

9:18 a.m.-6:35 a.m.

2 stops20h 17m

London

Thu 26/2

8:10 p.m.-1:35 p.m.

1 stop18h 25m

C$ 568

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 23/5

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

1 stop6h 23m

London

Tue 26/5

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

1 stop6h 25m

C$ 924

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 25/2

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

1 stop6h 05m

London

Thu 26/2

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

1 stop6h 45m

C$ 925

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 17/2

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

1 stop6h 21m

London

Thu 19/2

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

1 stop6h 45m

C$ 964

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 6/3

5:29 p.m.-6:13 p.m.

3 stops47h 44m

C$ 411

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 6/3

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

1 stop4h 26m

C$ 426

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 28/2

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

1 stop6h 21m

C$ 434

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 6/3

6:00 a.m.-5:05 p.m.

2 stops10h 05m

C$ 500

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 28/2

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

2 stops6h 00m

C$ 1,349

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/1

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 December is currently the most expensive (average of C$ 292). 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 December is currently the most expensive (average of C$ 292). 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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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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