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$209+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/28. 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 3/268:10 pm
YXU
-
ORD
2 stops15h 42m
Multiple Airlines
Mon 3/302:20 pm
ORD
-
YXU
1 stop15h 15m
Multiple Airlines
Deal found 1/28$501
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 3/268:10 pm
YXU
-
ORD
1 stop18h 25m
WestJet
Mon 3/302:20 pm
ORD
-
YXU
1 stop15h 15m
WestJet
Deal found 1/28$528
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Sun 3/18:10 pm
YXU
-
ORD
1 stop18h 25m
Multiple Airlines
Sat 3/77:39 pm
ORD
-
YXU
2 stops21h 34m
Multiple Airlines
Deal found 1/28$536
This Air Canada deal was found by Cheapflights users on 1/28. 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.
Sun 3/15:10 am
YXU
-
ORD
1 stop5h 03m
Air Canada
Sat 3/73:55 pm
ORD
-
YXU
1 stop4h 26m
Air Canada
Deal found 1/28$543
This Air Canada deal was found by Cheapflights users on 1/26. 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 2/235:10 am
YXU
-
ORD
1 stop5h 03m
Air Canada
Thu 2/2610:00 am
ORD
-
YXU
1 stop6h 05m
Air Canada
Deal found 1/26$561
This Air Canada deal was found by Cheapflights users on 1/28. 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 2/255:10 am
YXU
-
ORD
2 stops6h 56m
Air Canada
Wed 3/42:00 pm
ORD
-
YXU
1 stop6h 21m
Air Canada
Deal found 1/28$564
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/85:10 am
YXU
-
ORD
1 stop5h 40m
United Airlines
Thu 3/128:50 am
ORD
-
YXU
2 stops7h 15m
United Airlines
Deal found 1/28$598
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Sun 3/15:40 pm
YXU
-
ORD
2 stops7h 03m
United Airlines
Sat 3/710:50 am
ORD
-
YXU
2 stops9h 31m
United Airlines
Deal found 1/28$600
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/85:40 pm
YXU
-
ORD
2 stops14h 48m
United Airlines
Fri 3/137:00 am
ORD
-
YXU
2 stops13h 21m
United Airlines
Deal found 1/28$603
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Mon 2/235:10 am
YXU
-
ORD
1 stop5h 40m
United Airlines
Thu 2/268:50 am
ORD
-
YXU
2 stops7h 15m
United Airlines
Deal found 1/26$614
This WestJet deal was found by Cheapflights users on 1/26. 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.
Mon 2/238:10 pm
YXU
-
MDW
2 stops22h 35m
WestJet
Thu 2/261:49 pm
MDW
-
YXU
2 stops15h 46m
WestJet
Deal found 1/26$1,426
This WestJet deal was found by Cheapflights users on 1/28. 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 3/268:10 pm
YXU
-
MDW
2 stops22h 12m
WestJet
Mon 3/3010:45 am
MDW
-
YXU
2 stops18h 50m
WestJet
Deal found 1/28$1,658

Find flight deals from London to Illinois

Keep the following information in mind while searching for London to Illinois flight deals. Data was last updated January 29, 2026.

Round-trip from

$501
(Kiwi.com)

One-way from

$209
(oojo)
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 January 29, 2026.
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

Sun 3/1

8:10 pm-1:35 pm

1 stop18h 25m

Chicago O'Hare Intl

Sat 3/7

7:39 pm-6:13 pm

2 stops21h 34m

$536

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/1

5:10 am-9:13 am

1 stop5h 03m

Chicago O'Hare Intl

Sat 3/7

3:55 pm-9:21 pm

1 stop4h 26m

$543

LondonChicago

YXU - ORD

YXUORD

London

Wed 2/25

5:10 am-9:13 am

1 stop5h 03m

Chicago O'Hare Intl

Wed 3/4

3:55 pm-9:21 pm

1 stop4h 26m

$561

LondonChicago

YXU - ORD

YXUORD

London

Mon 2/23

5:10 am-9:13 am

1 stop5h 03m

Chicago O'Hare Intl

Thu 2/26

10:00 am-5:05 pm

1 stop6h 05m

$561

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/8

5:10 am-9:50 am

1 stop5h 40m

Chicago O'Hare Intl

Thu 3/12

3:55 pm-9:21 pm

1 stop4h 26m

$598

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/8

5:10 am-9:50 am

1 stop5h 40m

Chicago O'Hare Intl

Fri 3/13

2:00 pm-9:21 pm

1 stop6h 21m

$598

LondonChicago

YXU - ORD

YXUORD

London

Thu 3/26

5:10 am-2:27 pm

2 stops10h 17m

Chicago O'Hare Intl

Mon 3/30

8:45 am-5:03 pm

2 stops7h 18m

$600

LondonChicago

YXU - ORD

YXUORD

London

Sun 3/1

5:40 pm-11:43 pm

2 stops7h 03m

Chicago O'Hare Intl

Sat 3/7

10:50 am-9:21 pm

2 stops9h 31m

$600

LondonChicago

YXU - MDW

YXUMDW

London

Mon 2/23

8:10 pm-5:45 pm

2 stops22h 35m

Chicago Midway

Thu 2/26

1:49 pm-6:35 am

2 stops15h 46m

$1,426

LondonChicago

YXU - MDW

YXUMDW

London

Thu 3/26

8:10 pm-5:22 pm

2 stops22h 12m

Chicago Midway

Mon 3/30

10:45 am-6:35 am

2 stops18h 50m

$1,658

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 18 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 $82). Flying from London, Ontario to Illinois in March is currently the most expensive (average of $190). 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 $543, Air Canada can have you in Illinois from London, Ontario in 5h 03m. 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 $82). Flying from London, Ontario to Illinois in March is currently the most expensive (average of $190). 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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