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Illinois

$286+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Round-trip from

$688
(Air Canada)

One-way from

$286
(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 March 28, 2025.

This Air Canada deal was found by Cheapflights users on 3/27. 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 5/196:15 amYXU - ORD
1 stop4h 46mAir Canada
Thu 5/222:00 pmORD - YXU
1 stop6h 28mAir Canada
Deal found 3/27$688
This United Airlines deal was found by Cheapflights users on 3/27. 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 5/199:55 amYXU - ORD
2 stops9h 31mUnited Airlines
Thu 5/222:00 pmORD - YXU
1 stop6h 28mUnited Airlines
Deal found 3/27$694

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 March 28, 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

Mon 5/19

6:15 am-10:01 am

1 stop4h 46m

Chicago O'Hare Intl

Thu 5/22

2:00 pm-9:28 pm

1 stop6h 28m

$688

LondonChicago

YXU - ORD

YXUORD

London

Mon 5/19

9:55 am-6:26 pm

2 stops9h 31m

Chicago O'Hare Intl

Thu 5/22

2:00 pm-9:28 pm

1 stop6h 28m

$694

LondonChicago

YXU - MDW

YXUMDW

London

Sat 5/10

8:00 pm-1:34 pm

2 stops18h 34m

$286

LondonChicago

YXU - ORD

YXUORD

London

Sat 5/10

8:00 pm-11:00 am

2 stops16h 00m

$286

LondonChicago

YXU - ORD

YXUORD

London

Mon 5/12

8:00 pm-4:44 pm

1 stop21h 44m

$320

LondonChicago

YXU - ORD

YXUORD

London

Sat 4/26

3:25 pm-7:30 pm

1 stop5h 05m

$364

LondonChicago

YXU - ORD

YXUORD

London

Sat 4/26

5:15 am-6:55 pm

2 stops14h 40m

$365

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

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 $323). 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 March 28, 2025.
United Airlines
7.4
Good
8,603 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

7.0

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
8,603 reviews
United Airlines
7.4
Good
8,603 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

7.0

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
2,785 reviews
United Airlines
7.4
Good
8,603 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

7.0

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
8,986 reviews
United Airlines
7.4
Good
8,603 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

7.0

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.

  • What are the cheapest airlines to fly from London, Ontario to Illinois one-way?

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as $320. Users have also found prices from $364 and $365 on Air Canada and United Airlines, respectively.

  • 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 $323). 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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