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$413+ 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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Round-trip from

$444
(Air Canada)

One-way from

$413
(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 April 30, 2025.

This Air Canada deal was found by Cheapflights users on 4/29. 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 6/139:55 amYXU - ORD
1 stop5h 06mAir Canada
Fri 6/2010:00 amORD - YXU
1 stop3h 57mAir Canada
Deal found 4/29$444
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Fri 6/133:35 pmYXU - ORD
2 stops8h 55mUnited Airlines
Fri 6/2010:00 amORD - YXU
1 stop3h 57mUnited Airlines
Deal found 4/29$472
This United deal was found by Cheapflights users on 4/29. 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.
Wed 6/43:35 pmYXU - ORD
2 stops8h 55mMultiple Airlines
Mon 6/92:16 pmORD - YXU
2 stops18h 03mMultiple Airlines
Deal found 4/29$492
This FlightHub deal was found by Cheapflights users on 4/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/46:00 amYXU - MDW
2 stops12h 45mWestJet
Mon 6/91:47 pmMDW - YXU
2 stops14h 27mWestJet
Deal found 4/28$926
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Sat 5/108:00 pmYXU - MDW
3 stops22h 45mMultiple Airlines
Mon 6/25:50 pmMDW - YXU
3 stops34h 24mMultiple Airlines
Deal found 4/28$1,218

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 April 30, 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

Fri 6/13

9:55 am-2:01 pm

1 stop5h 06m

Chicago O'Hare Intl

Fri 6/20

10:00 am-2:57 pm

1 stop3h 57m

$444

LondonChicago

YXU - ORD

YXUORD

London

Fri 6/13

3:35 pm-11:30 pm

2 stops8h 55m

Chicago O'Hare Intl

Fri 6/20

10:00 am-2:57 pm

1 stop3h 57m

$472

LondonChicago

YXU - ORD

YXUORD

London

Wed 6/4

3:35 pm-11:30 pm

2 stops8h 55m

Chicago O'Hare Intl

Mon 6/9

2:16 pm-9:19 am

2 stops18h 03m

$492

LondonChicago

YXU - MDW

YXUMDW

London

Wed 6/4

6:00 am-5:45 pm

2 stops12h 45m

Chicago Midway

Mon 6/9

1:47 pm-5:14 am

2 stops14h 27m

$926

LondonChicago

YXU - MDW

YXUMDW

London

Sat 5/10

8:00 pm-5:45 pm

3 stops22h 45m

Chicago Midway

Mon 6/2

5:50 pm-5:14 am

3 stops34h 24m

$1,218

LondonChicago

YXU - MDW

YXUMDW

London

Thu 6/12

6:00 am-11:18 pm

2 stops42h 18m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

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.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated April 30, 2025.
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,696 reviews
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
WestJet
7.2
Good
2,826 reviews
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Air Canada
7.0
Good
9,244 reviews
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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.

  • 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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