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$212+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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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 August 18, 2025.

Round-trip from

$288
(FlightHub)

One-way from

$212
(Kiwi.com)
From London to Illinois
Search Deals
One-way flight from London to Illinois
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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 August 18, 2025.

This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/298:00 pmYXU - ORD
1 stop21h 43mWestJet
Mon 10/65:30 pmORD - YXU
1 stop10h 42mWestJet
Deal found 8/17$288
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Thu 9/188:00 pmYXU - ORD
2 stops39h 42mMultiple Airlines
Mon 9/225:30 pmORD - YXU
1 stop10h 42mMultiple Airlines
Deal found 8/17$355
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Mon 9/298:00 pmYXU - ORD
2 stops22h 39mMultiple Airlines
Mon 10/65:30 pmORD - YXU
1 stop10h 42mMultiple Airlines
Deal found 8/17$364
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Thu 9/188:00 pmYXU - ORD
2 stops39h 42mMultiple Airlines
Tue 9/235:30 pmORD - YXU
1 stop10h 42mMultiple Airlines
Deal found 8/16$372
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Thu 9/186:00 amYXU - ORD
1 stop11h 43mWestJet
Tue 9/235:30 pmORD - YXU
1 stop10h 42mWestJet
Deal found 8/16$415
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Thu 9/188:00 pmYXU - ORD
1 stop21h 43mWestJet
Mon 9/225:30 pmORD - YXU
1 stop10h 42mWestJet
Deal found 8/17$429
This Air Canada deal was found by Cheapflights users on 8/18. 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 11/229:25 amYXU - ORD
1 stop6h 45mAir Canada
Mon 11/2410:00 amORD - YXU
1 stop6h 06mAir Canada
Deal found 8/18$469
This Air Canada deal was found by Cheapflights users on 8/16. 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 12/49:25 amYXU - ORD
1 stop6h 45mAir Canada
Wed 12/317:15 amORD - YXU
2 stops8h 51mAir Canada
Deal found 8/16$470
This Air Canada deal was found by Cheapflights users on 8/17. 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 9/186:10 amYXU - ORD
1 stop3h 58mAir Canada
Mon 9/223:50 pmORD - YXU
1 stop4h 39mAir Canada
Deal found 8/17$492
This Air Canada deal was found by Cheapflights users on 8/16. 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 12/89:25 amYXU - ORD
1 stop11h 05mAir Canada
Wed 12/312:00 pmORD - YXU
1 stop6h 21mAir Canada
Deal found 8/16$506
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Fri 10/319:25 amYXU - ORD
1 stop4h 36mUnited Airlines
Sun 11/28:50 amORD - YXU
2 stops7h 16mUnited Airlines
Deal found 8/16$538
This WestJet deal was found by Cheapflights users on 8/17. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/188:00 pmYXU - MDW
2 stops14h 40mWestJet
Mon 9/2212:43 pmMDW - YXU
2 stops15h 29mWestJet
Deal found 8/17$1,473

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 August 18, 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

Mon 9/29

8:00 pm-4:43 pm

1 stop21h 43m

Chicago O'Hare Intl

Mon 10/6

5:30 pm-5:12 am

1 stop10h 42m

$288

LondonChicago

YXU - ORD

YXUORD

London

Thu 9/18

8:00 pm-10:42 am

2 stops39h 42m

Chicago O'Hare Intl

Mon 9/22

5:30 pm-5:12 am

1 stop10h 42m

$355

LondonChicago

YXU - ORD

YXUORD

London

Mon 9/29

8:00 pm-5:39 pm

2 stops22h 39m

Chicago O'Hare Intl

Mon 10/6

5:30 pm-5:12 am

1 stop10h 42m

$364

LondonChicago

YXU - ORD

YXUORD

London

Thu 9/18

8:00 pm-10:42 am

2 stops39h 42m

Chicago O'Hare Intl

Tue 9/23

5:30 pm-5:12 am

1 stop10h 42m

$372

LondonChicago

YXU - ORD

YXUORD

London

Thu 9/18

6:00 am-4:43 pm

1 stop11h 43m

Chicago O'Hare Intl

Tue 9/23

5:30 pm-5:12 am

1 stop10h 42m

$415

LondonChicago

YXU - ORD

YXUORD

London

Thu 9/18

8:00 pm-4:43 pm

1 stop21h 43m

Chicago O'Hare Intl

Mon 9/22

5:30 pm-5:12 am

1 stop10h 42m

$429

LondonChicago

YXU - ORD

YXUORD

London

Sat 11/22

9:25 am-3:10 pm

1 stop6h 45m

Chicago O'Hare Intl

Mon 11/24

10:00 am-5:06 pm

1 stop6h 06m

$469

LondonChicago

YXU - ORD

YXUORD

London

Fri 12/5

5:45 am-2:55 pm

2 stops10h 10m

Chicago O'Hare Intl

Wed 12/31

2:00 pm-9:21 pm

1 stop6h 21m

$470

LondonChicago

YXU - ORD

YXUORD

London

Thu 12/4

9:25 am-3:10 pm

1 stop6h 45m

Chicago O'Hare Intl

Wed 12/31

7:15 am-5:06 pm

2 stops8h 51m

$470

LondonChicago

YXU - ORD

YXUORD

London

Sat 12/6

5:45 am-2:55 pm

2 stops10h 10m

Chicago O'Hare Intl

Wed 12/31

2:00 pm-9:21 pm

1 stop6h 21m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 25 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, August is the cheapest month in which you can book a flight from London, Ontario to Illinois (average of $245). Flying from London, Ontario to Illinois in March is currently the most expensive (average of $321). 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 $288, WestJet can have you in Illinois from London, Ontario in 21h 43m. The distance between London, Ontario and Illinois is about 351 mi.

  • 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, August is the cheapest month in which you can book a flight from London, Ontario to Illinois (average of $245). Flying from London, Ontario to Illinois in March is currently the most expensive (average of $321). 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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