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$192+ Cheap flights from Illinois 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YXU
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Illinois to London

Keep the following information in mind while searching for Illinois to London flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$606
(Mytrip)

One-way from

$192
(Kiwi.com)
Provider with most accurate pricing for Chicago (CHI)-London flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-London flights.
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From Illinois to London
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One-way flight from Illinois to London
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Find flight deals from Illinois to London

Cheapest flights from Illinois to London
Explore the most affordable flight options available from Illinois to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/242:01 pmORD - YXU
3 stops28h 11mMultiple Airlines
Mon 12/18:10 pmYXU - ORD
3 stops34h 22mMultiple Airlines
Deal found 10/28$606
This Air Canada deal was found by Cheapflights users on 10/29. 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.
Fri 11/283:55 pmORD - YXU
1 stop4h 26mAir Canada
Fri 12/55:10 amYXU - ORD
1 stop5h 03mAir Canada
Deal found 10/29$622
This Air Canada deal was found by Cheapflights users on 10/28. 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.
Mon 11/243:55 pmORD - YXU
1 stop4h 26mAir Canada
Mon 12/19:25 amYXU - ORD
1 stop4h 36mAir Canada
Deal found 10/28$651
This Air Canada deal was found by Cheapflights users on 10/29. 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 12/132:00 pmORD - YXU
1 stop6h 21mAir Canada
Sat 12/209:25 amYXU - ORD
1 stop6h 45mAir Canada
Deal found 10/29$688
This United deal was found by Cheapflights users on 10/29. 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.
Fri 11/2810:00 amORD - YXU
1 stop6h 05mMultiple Airlines
Fri 12/55:10 amYXU - ORD
2 stops10h 45mMultiple Airlines
Deal found 10/29$702
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/147:10 amORD - YXU
2 stops8h 55mUnited Airlines
Sun 12/219:25 amYXU - ORD
1 stop4h 36mUnited Airlines
Deal found 10/30$707
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/137:10 amORD - YXU
2 stops8h 55mUnited Airlines
Sat 12/209:25 amYXU - ORD
1 stop11h 05mUnited Airlines
Deal found 10/29$730
This Air Canada deal was found by Cheapflights users on 10/29. 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 11/263:55 pmORD - YXU
1 stop4h 26mAir Canada
Wed 12/35:40 pmYXU - ORD
2 stops7h 03mAir Canada
Deal found 10/29$737

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois 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 October 30, 2025.
Use the filters below to find and compare flights from Illinois to London that are best for you.

Fly from

Illinois

Fly to

London

Route

Depart

Return

Price

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 4/24

2:00 pm-9:18 pm

1 stop6h 18m

London

Sun 4/26

5:10 am-9:10 am

1 stop5h 00m

$622

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 3/8

3:55 pm-9:21 pm

1 stop4h 26m

London

Thu 3/12

9:25 am-1:01 pm

1 stop4h 36m

$622

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 11/28

3:55 pm-9:21 pm

1 stop4h 26m

London

Fri 12/5

5:10 am-9:13 am

1 stop5h 03m

$622

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 12/14

2:00 pm-9:21 pm

1 stop6h 21m

London

Sun 12/21

9:25 am-3:10 pm

1 stop6h 45m

$622

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 11/24

3:55 pm-9:21 pm

1 stop4h 26m

London

Mon 12/1

9:25 am-1:01 pm

1 stop4h 36m

$651

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 12/13

2:00 pm-9:21 pm

1 stop6h 21m

London

Sat 12/20

9:25 am-3:10 pm

1 stop6h 45m

$688

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 11/18

2:31 pm-7:12 pm

3 stops27h 41m

$205

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 12/13

2:00 pm-9:21 pm

1 stop6h 21m

$285

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 11/12

7:34 pm-7:12 pm

3 stops46h 38m

$305

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 12/13

7:10 am-5:05 pm

2 stops8h 55m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 15 results
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Best time to book a flight from Illinois to London

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

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

Currently, March is the cheapest month in which you can book a flight from Illinois to London, Ontario (average of $106). Flying from Illinois to London, Ontario in July is currently the most expensive (average of $187). 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 Illinois 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 Illinois?

    London (YXU), located 5.3 mi from the city center, is the airport you fly into when you book flights from Illinois to London.

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

    Departing from Illinois to London, Ontario will take you 6h 18m. Airlines will cover a distance of 351 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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.

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

    Currently, March is the cheapest month in which you can book a flight from Illinois to London, Ontario (average of $106). Flying from Illinois to London, Ontario in July is currently the most expensive (average of $187). 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

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend

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