HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$157+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
Dec 29 — Jan 51
Mon 12/29
Mon 1/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from London to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 29, 2025.

This Air Canada deal was found by Cheapflights users on 11/28. 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.
Fri 12/55:40 pmYXU - ORD
1 stop5h 25mAir Canada
Fri 12/126:28 pmORD - YXU
1 stop13h 18mAir Canada
Deal found 11/28$635
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Fri 12/55:10 amYXU - ORD
2 stops14h 13mUnited Airlines
Fri 12/126:28 pmORD - YXU
1 stop13h 18mUnited Airlines
Deal found 11/28$646
This United Airlines deal was found by Cheapflights users on 11/28. 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.
Mon 12/229:25 amYXU - ORD
2 stops13h 14mUnited Airlines
Thu 12/259:00 amORD - YXU
2 stops11h 21mUnited Airlines
Deal found 11/28$664
This Air Canada deal was found by Cheapflights users on 11/28. 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 12/285:10 amYXU - ORD
1 stop5h 55mAir Canada
Sun 1/48:40 pmORD - YXU
1 stop11h 06mAir Canada
Deal found 11/28$906
This United Airlines deal was found by Cheapflights users on 11/28. 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 12/289:25 amYXU - ORD
1 stop4h 36mUnited Airlines
Sun 1/49:40 pmORD - YXU
2 stops22h 41mUnited Airlines
Deal found 11/28$950
This Mytrip deal was found by Cheapflights users on 11/28. 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.
Fri 12/58:10 pmYXU - ORD
2 stops22h 34mMultiple Airlines
Fri 12/129:14 pmORD - YXU
3 stops44h 58mMultiple Airlines
Deal found 11/28$1,306
This Mytrip deal was found by Cheapflights users on 11/28. 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.
Sun 12/288:10 pmYXU - MDW
3 stops20h 10mMultiple Airlines
Sun 1/411:05 amMDW - YXU
3 stops18h 29mMultiple Airlines
Deal found 11/28$1,988
This Expedia deal was found by Cheapflights users on 11/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:10 pmYXU - MDW
2 stops16h 48mWestJet
Thu 12/2511:48 amMDW - YXU
2 stops17h 46mWestJet
Deal found 11/28$2,447
This Mytrip deal was found by Cheapflights users on 11/28. 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.
Sun 12/288:10 pmYXU - ORD
2 stops29h 20mMultiple Airlines
Sun 1/47:57 pmORD - YXU
3 stops33h 37mMultiple Airlines
Deal found 11/28$2,608
This WestJet deal was found by Cheapflights users on 11/28. 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.
Sun 12/288:10 pmYXU - MDW
2 stops22h 09mWestJet
Sun 1/411:48 amMDW - YXU
2 stops17h 46mWestJet
Deal found 11/28$2,751

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 29, 2025.

Round-trip from

$327
(Kiwi.com)

One-way from

$157
(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 November 29, 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

Sun 2/1

8:10 pm-1:35 pm

1 stop18h 25m

Chicago O'Hare Intl

Thu 2/5

5:40 am-6:35 am

2 stops23h 55m

$365

LondonChicago

YXU - ORD

YXUORD

London

Sun 1/11

9:25 am-1:01 pm

1 stop4h 36m

Chicago O'Hare Intl

Sun 1/18

10:00 am-5:05 pm

1 stop6h 05m

$427

LondonChicago

YXU - ORD

YXUORD

London

Mon 1/19

9:25 am-1:01 pm

1 stop4h 36m

Chicago O'Hare Intl

Fri 1/23

2:00 pm-9:21 pm

1 stop6h 21m

$432

LondonChicago

YXU - ORD

YXUORD

London

Sun 2/1

9:25 am-1:01 pm

1 stop4h 36m

Chicago O'Hare Intl

Thu 2/5

10:00 am-5:05 pm

1 stop6h 05m

$433

LondonChicago

YXU - ORD

YXUORD

London

Sat 1/3

9:25 am-1:01 pm

1 stop4h 36m

Chicago O'Hare Intl

Sat 1/10

2:00 pm-9:21 pm

1 stop6h 21m

$479

LondonChicago

YXU - ORD

YXUORD

London

Mon 1/12

9:25 am-3:10 pm

1 stop6h 45m

Chicago O'Hare Intl

Tue 1/13

10:52 am-9:21 pm

2 stops9h 29m

$483

LondonChicago

YXU - ORD

YXUORD

London

Mon 1/12

5:40 pm-10:05 pm

1 stop5h 25m

Chicago O'Hare Intl

Mon 1/19

3:55 pm-9:21 pm

1 stop4h 26m

$485

LondonChicago

YXU - MDW

YXUMDW

London

Mon 1/19

8:10 pm-6:36 pm

2 stops23h 26m

Chicago Midway

Thu 1/22

9:50 am-6:34 am

2 stops19h 44m

$1,302

LondonChicago

YXU - MDW

YXUMDW

London

Mon 1/12

8:10 pm-10:27 am

2 stops15h 17m

Chicago Midway

Mon 1/19

9:50 am-6:34 am

2 stops19h 44m

$1,340

LondonChicago

YXU - MDW

YXUMDW

London

Sun 1/11

8:10 pm-1:09 pm

2 stops17h 59m

Chicago Midway

Sun 1/18

9:50 am-6:34 am

2 stops19h 44m

$1,583

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/27

Showing 1-10 of 23 results
1
2
3

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 February 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 $427, 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 February 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to John F Kennedy Intl flights
Pearson Intl to Fort Lauderdale flights
Pierre Elliott Trudeau Intl to Fort Lauderdale flights
Pearson Intl to Newark flights
Toronto Island to Newark flights
Pearson Intl to Miami flights
Pierre Elliott Trudeau Intl to John F Kennedy Intl flights
Pierre Elliott Trudeau Intl to LaGuardia flights
Pearson Intl to LaGuardia flights
Pearson Intl to Las Vegas flights
Pearson Intl to Orlando flights
Pierre Elliott Trudeau Intl to Miami flights
Pierre Elliott Trudeau Intl to Newark flights
Pearson Intl to Los Angeles flights
Pearson Intl to Tampa flights
Pearson Intl to Dallas/Fort Worth flights
Pearson Intl to Hobby flights
Toronto Island to Fort Lauderdale flights
Toronto Island to Orlando flights
Pearson Intl to George Bush Intcntl flights
Pierre Elliott Trudeau Intl to Orlando flights
Pearson Intl to San Francisco flights
Pierre Elliott Trudeau Intl to Las Vegas flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Pearson Intl to Reagan-National flights
Pearson Intl to O'Hare Intl flights
Toronto Island to Miami flights
Pearson Intl to Atlanta flights
Pearson Intl to Sky Harbor Intl flights
Pearson Intl to Fort Myers flights
Hamilton to Fort Lauderdale flights
Ottawa to Fort Lauderdale flights
Pearson Intl to Boston flights
Pearson Intl to Dulles Intl flights
Pearson Intl to Seattle flights
Ottawa to Orlando flights
Pearson Intl to Nashville flights
Pierre Elliott Trudeau Intl to Tampa flights
Pierre Elliott Trudeau Intl to Dallas/Fort Worth flights
Pearson Intl to Honolulu flights
Toronto Island to Boston flights
Pearson Intl to Ontario flights
Pearson Intl to West Palm Beach flights
Toronto Island to Dulles Intl flights
Pierre Elliott Trudeau Intl to O'Hare Intl flights
Pierre Elliott Trudeau Intl to Dulles Intl flights
Pearson Intl to San Diego flights
Toronto Island to Midway flights
Ottawa to Newark flights
Pierre Elliott Trudeau Intl to San Francisco flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights