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$305+ Cheap flights from Chicago (CHI) to London, ON (YXU)

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 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YXU
Jun 23 — Jun 301
Tue 6/23
Tue 6/30
1 adult, Economy
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1. Tell us where you want to go

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Cheap 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 May 24, 2026.

This Air Canada deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/69:55 am
ORD
-
YXU
1 stop4h 03m
Air Canada
Thu 6/115:10 am
YXU
-
ORD
1 stop4h 50m
Air Canada
Deal found 5/21$654
This Air Canada deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:55 am
ORD
-
YXU
1 stop4h 03m
Air Canada
Tue 6/910:05 am
YXU
-
ORD
1 stop4h 20m
Air Canada
Deal found 5/21$667
This Air Canada deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:45 am
ORD
-
YXU
2 stops8h 00m
Air Canada
Sun 7/125:10 am
YXU
-
ORD
1 stop4h 50m
Air Canada
Deal found 5/21$676
This Air Canada deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:40 pm
ORD
-
YXU
1 stop11h 40m
Air Canada
Sat 7/1110:05 am
YXU
-
ORD
1 stop5h 50m
Air Canada
Deal found 5/22$692
This Air Canada deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/63:45 pm
ORD
-
YXU
1 stop4h 55m
Air Canada
Mon 7/135:10 am
YXU
-
ORD
1 stop4h 50m
Air Canada
Deal found 5/23$739
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/175:30 pm
ORD
-
YXU
1 stop10h 50m
Multiple Airlines
Wed 6/245:55 pm
YXU
-
ORD
2 stops27h 48m
Multiple Airlines
Deal found 5/20$749
This Air Canada deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/188:40 pm
ORD
-
YXU
1 stop11h 37m
Air Canada
Thu 6/255:10 am
YXU
-
ORD
1 stop4h 50m
Air Canada
Deal found 5/21$764
This Air Canada deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1610:43 am
ORD
-
YXU
1 stop5h 50m
Air Canada
Sat 6/2010:05 am
YXU
-
ORD
2 stops9h 47m
Air Canada
Deal found 5/23$769
This United Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/612:11 pm
ORD
-
YXU
2 stops8h 27m
United Airlines
Thu 6/115:10 am
YXU
-
ORD
1 stop4h 50m
United Airlines
Deal found 5/21$774

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 May 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$654
(Air Canada)

One-way from

$305
(Air Canada)
Provider with most accurate pricing for Chicago (CHI)-London flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-London flights.
Search Deals
From Chicago (CHI) to London
Search Deals
One-way flight from Chicago (CHI) 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 2,558,603 searches. Data last updated May 24, 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

Tue 6/16

3:45 pm-9:38 pm

1 stop4h 53m

London

Sat 6/20

10:05 am-2:55 pm

1 stop5h 50m

$667
Quickest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 6/14

3:45 pm-9:38 pm

1 stop4h 53m

London

Wed 6/17

5:10 am-9:00 am

1 stop4h 50m

$667

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 7/9

8:40 pm-9:20 am

1 stop11h 40m

London

Sat 7/11

10:05 am-1:22 pm

1 stop4h 17m

$692

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 7/6

3:45 pm-9:40 pm

1 stop4h 55m

London

Mon 7/13

5:10 am-9:00 am

1 stop4h 50m

$739

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 7/8

10:00 am-9:40 pm

2 stops10h 40m

London

Sun 7/12

5:10 am-9:00 am

1 stop4h 50m

$774

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 8/28

8:45 am-9:40 pm

2 stops11h 55m

London

Mon 8/31

5:40 am-9:00 am

1 stop4h 20m

$774

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 6/14

6:30 am-9:38 pm

2 stops14h 08m

London

Wed 6/17

6:10 pm-10:05 pm

1 stop4h 55m

$774

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 7/24

6:00 am-2:55 pm

2 stops7h 55m

London

Sun 7/26

10:05 am-1:22 pm

1 stop4h 17m

$774
Cheapest one-way

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 7/26

3:45 pm-9:40 pm

1 stop4h 55m

$305

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 7/6

2:15 pm-9:40 pm

1 stop6h 25m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/21

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Compare providers for flights from Chicago to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to London in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-London, Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-London, Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-London, Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-London, Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-London, Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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
No data available for this route at this time. Please check back soon.

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?

    Located just 5.3 mi from the city center, London is the airport most travelers will use when flying to London from Chicago. Booking flights from Chicago to London (YXU) should be relatively easy as there are 0 daily inbound flights from Chicago from 0 different airlines.

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

    For as low as $667, Air Canada can have you in London, Ontario from Chicago in 4h 53m. There are 351 mi 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.

See more FAQs

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