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$186+ 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
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 December 16, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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 12/219:25 amYXU - ORD
1 stop6h 45mUnited Airlines
Fri 1/210:00 amORD - YXU
1 stop6h 05mUnited Airlines
Deal found 12/15$875
This Air Canada deal was found by Cheapflights users on 12/14. 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 12/219:25 amYXU - ORD
1 stop6h 45mAir Canada
Sun 1/48:40 pmORD - YXU
1 stop11h 06mAir Canada
Deal found 12/14$1,101
This United Airlines deal was found by Cheapflights users on 12/14. 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 12/215:10 amYXU - ORD
1 stop5h 03mUnited Airlines
Sun 1/46:21 pmORD - YXU
2 stops13h 25mUnited Airlines
Deal found 12/14$1,188

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 December 16, 2025.

Round-trip from

$347
(Kiwi.com)

One-way from

$186
(Kiwi.com)
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 December 16, 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

Thu 1/15

9:50 am-3:10 pm

1 stop6h 20m

Chicago O'Hare Intl

Wed 1/21

3:55 pm-9:21 pm

1 stop4h 26m

$469

LondonChicago

YXU - ORD

YXUORD

London

Thu 1/29

8:10 pm-1:35 pm

1 stop18h 25m

Chicago O'Hare Intl

Thu 2/5

9:00 am-6:35 am

2 stops20h 35m

$470

LondonChicago

YXU - ORD

YXUORD

London

Thu 1/29

9:50 am-3:10 pm

1 stop6h 20m

Chicago O'Hare Intl

Thu 2/5

3:55 pm-9:21 pm

1 stop4h 26m

$496

LondonChicago

YXU - ORD

YXUORD

London

Sun 12/21

9:25 am-3:10 pm

1 stop6h 45m

Chicago O'Hare Intl

Fri 1/2

10:00 am-5:05 pm

1 stop6h 05m

$875

LondonChicago

YXU - ORD

YXUORD

London

Sun 12/21

9:25 am-3:10 pm

1 stop6h 45m

Chicago O'Hare Intl

Sun 1/4

8:40 pm-8:46 am

1 stop11h 06m

$1,101

LondonChicago

YXU - ORD

YXUORD

London

Sun 12/21

5:10 am-9:13 am

1 stop5h 03m

Chicago O'Hare Intl

Sun 1/4

6:21 pm-8:46 am

2 stops13h 25m

$1,188

LondonChicago

YXU - MDW

YXUMDW

London

Sun 4/12

8:10 pm-6:05 pm

2 stops22h 55m

Chicago Midway

Thu 4/16

9:20 am-6:35 am

2 stops20h 15m

$1,397

LondonChicago

YXU - MDW

YXUMDW

London

Thu 1/29

8:10 pm-9:53 am

2 stops14h 43m

Chicago Midway

Thu 2/5

10:48 am-6:35 am

2 stops18h 47m

$1,488

LondonChicago

YXU - MDW

YXUMDW

London

Wed 4/1

8:10 pm-1:23 pm

2 stops18h 13m

Chicago Midway

Sun 4/5

2:03 pm-6:35 am

2 stops15h 32m

$1,514

LondonChicago

YXU - ORD

YXUORD

London

Thu 1/29

8:10 pm-4:51 pm

2 stops45h 41m

$186

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 12 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 $469, Air Canada can have you in Illinois from London, Ontario in 6h 20m. 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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