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$264+ Cheap flights from London, ON (YXU) to Illinois

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 12/27. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from London to Illinois

Cheapest flights from London to Illinois
Explore the most affordable flight options available from London to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Air Canada deal was found by Cheapflights users on 11/11. 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 12/279:25 amYXU - ORD
1 stop4h 36mAir Canada
Tue 12/302:00 pmORD - YXU
1 stop6h 21mAir Canada
Deal found 11/11$486
This Air Canada deal was found by Cheapflights users on 11/11. 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 12/255:10 amYXU - ORD
1 stop5h 03mAir Canada
Sat 12/2710:00 amORD - YXU
1 stop6h 05mAir Canada
Deal found 11/11$507
This Air Canada deal was found by Cheapflights users on 11/12. 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 12/105:40 pmYXU - ORD
2 stops7h 03mAir Canada
Wed 12/173:55 pmORD - YXU
1 stop4h 26mAir Canada
Deal found 11/12$565
This United Airlines deal was found by Cheapflights users on 11/12. 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.
Wed 12/105:10 amYXU - ORD
2 stops11h 14mUnited Airlines
Wed 12/176:00 amORD - YXU
2 stops10h 05mUnited Airlines
Deal found 11/12$585
This United deal was found by Cheapflights users on 11/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:10 amYXU - ORD
2 stops14h 09mMultiple Airlines
Sat 12/273:35 pmORD - YXU
2 stops16h 11mMultiple Airlines
Deal found 11/11$600
This United deal was found by Cheapflights users on 11/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/275:10 amYXU - ORD
2 stops15h 07mMultiple Airlines
Tue 12/303:35 pmORD - YXU
2 stops16h 11mMultiple Airlines
Deal found 11/11$658
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:10 pmYXU - ORD
2 stops24h 59mMultiple Airlines
Wed 12/171:34 pmORD - YXU
3 stops28h 38mMultiple Airlines
Deal found 11/12$674
This United Airlines deal was found by Cheapflights users on 11/12. 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 12/279:25 amYXU - ORD
1 stop4h 36mUnited Airlines
Sat 1/33:55 pmORD - YXU
1 stop4h 26mUnited Airlines
Deal found 11/12$735
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/275:10 amYXU - ORD
2 stops7h 36mUnited Airlines
Tue 12/301:24 pmORD - YXU
2 stops6h 57mUnited Airlines
Deal found 11/11$769
This Air Canada deal was found by Cheapflights users on 11/12. 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 12/275:10 amYXU - ORD
2 stops7h 08mAir Canada
Sat 1/32:00 pmORD - YXU
1 stop6h 21mAir Canada
Deal found 11/12$781
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:10 pmYXU - MDW
3 stops20h 10mMultiple Airlines
Wed 12/171:50 pmMDW - YXU
3 stops28h 22mMultiple Airlines
Deal found 11/12$1,048
This Mytrip deal was found by Cheapflights users on 11/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:10 pmYXU - MDW
3 stops20h 10mMultiple Airlines
Sat 12/275:59 pmMDW - YXU
3 stops35h 35mMultiple Airlines
Deal found 11/11$1,374

Cheap flight deals from London to Illinois

Keep the following information in mind while searching for London to Illinois flight deals. Data was last updated November 13, 2025.

Round-trip from

$486
(Air Canada)

One-way from

$264
(Air Canada)
From London to Illinois
Search Deals
One-way flight from London to Illinois
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Illinois 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 November 13, 2025.
Use the filters below to find and compare flights from London to Illinois that are best for you.

Fly from

London

Fly to

Illinois

Route

Depart

Return

Price

LondonChicago

YXU - ORD

YXUORD

London

Sat 12/27

9:25 am-1:01 pm

1 stop4h 36m

Chicago O'Hare Intl

Tue 12/30

2:00 pm-9:21 pm

1 stop6h 21m

$486

LondonChicago

YXU - ORD

YXUORD

London

Thu 12/25

5:10 am-9:13 am

1 stop5h 03m

Chicago O'Hare Intl

Sat 12/27

10:00 am-5:05 pm

1 stop6h 05m

$507

LondonChicago

YXU - ORD

YXUORD

London

Wed 12/10

5:10 am-9:13 am

1 stop5h 03m

Chicago O'Hare Intl

Wed 12/17

3:55 pm-9:21 pm

1 stop4h 26m

$507

LondonChicago

YXU - ORD

YXUORD

London

Wed 12/10

5:10 am-3:24 pm

2 stops11h 14m

Chicago O'Hare Intl

Wed 12/17

6:00 am-5:05 pm

2 stops10h 05m

$585

LondonChicago

YXU - ORD

YXUORD

London

Thu 12/25

5:10 am-6:19 pm

2 stops14h 09m

Chicago O'Hare Intl

Sat 12/27

3:35 pm-8:46 am

2 stops16h 11m

$600

LondonChicago

YXU - ORD

YXUORD

London

Sat 12/27

5:10 am-7:17 pm

2 stops15h 07m

Chicago O'Hare Intl

Tue 12/30

3:35 pm-8:46 am

2 stops16h 11m

$658

LondonChicago

YXU - ORD

YXUORD

London

Wed 12/10

8:10 pm-8:09 pm

2 stops24h 59m

Chicago O'Hare Intl

Wed 12/17

1:34 pm-7:12 pm

3 stops28h 38m

$674

LondonChicago

YXU - MDW

YXUMDW

London

Sun 4/5

8:10 pm-3:20 pm

3 stops20h 10m

Chicago Midway

Wed 4/8

11:00 am-6:35 am

3 stops18h 35m

$692

LondonChicago

YXU - ORD

YXUORD

London

Sat 12/27

9:25 am-1:01 pm

1 stop4h 36m

Chicago O'Hare Intl

Sat 1/3

3:55 pm-9:21 pm

1 stop4h 26m

$735

LondonChicago

YXU - ORD

YXUORD

London

Sat 12/27

5:10 am-11:46 am

2 stops7h 36m

Chicago O'Hare Intl

Tue 12/30

1:24 pm-9:21 pm

2 stops6h 57m

$769

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 22 results
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Best time to book a flight from London to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from London 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 London to Illinois

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

Currently, April is the cheapest month in which you can book a flight from London, Ontario to Illinois (average of $84). Flying from London, Ontario to Illinois in December is currently the most expensive (average of $192). 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 London to Illinois. 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 from for flights from London to Illinois?

    London (YXU) is the airport you will fly out of if you book a flight from London to Illinois. It is only a 5.3 mi journey to London (YXU) from London’s city center.

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

    For as low as $486, Air Canada can have you in Illinois from London, Ontario in 4h 36m. The distance between London, Ontario and Illinois is about 351 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from London to Illinois that include hotel bookings?

    Yes. In addition to deals on London to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Illinois.

  • Can I find deals for business class flights from London to Illinois?

    Yes. Cheapflights offers flight deals from London to Illinois 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 London, Ontario to Illinois?

    Currently, April is the cheapest month in which you can book a flight from London, Ontario to Illinois (average of $84). Flying from London, Ontario to Illinois in December is currently the most expensive (average of $192). 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

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