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$230+ 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 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$415
(Air Canada)

One-way from

$230
(Netflights)
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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/10. 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 7/233:40 pmYXU - ORD
1 stop4h 49mAir Canada
Wed 7/309:55 amORD - YXU
1 stop6h 12mAir Canada
Deal found 6/10$415
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Wed 7/239:45 pmYXU - ORD
2 stops19h 59mMultiple Airlines
Wed 7/305:30 pmORD - YXU
1 stop10h 44mMultiple Airlines
Deal found 6/10$461
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 7/239:55 amYXU - ORD
2 stops7h 57mUnited Airlines
Wed 7/3010:50 amORD - YXU
2 stops9h 37mUnited Airlines
Deal found 6/10$478
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Wed 7/238:00 pmYXU - MDW
3 stops21h 24mMultiple Airlines
Wed 7/309:40 amMDW - YXU
3 stops18h 34mMultiple Airlines
Deal found 6/10$754
This WestJet deal was found by Cheapflights users on 6/10. 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.
Wed 7/236:00 amYXU - MDW
2 stops12h 39mWestJet
Wed 7/3012:43 pmMDW - YXU
2 stops15h 31mWestJet
Deal found 6/10$1,709

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 June 12, 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

Wed 7/23

3:40 pm-7:29 pm

1 stop4h 49m

Chicago O'Hare Intl

Wed 7/30

9:55 am-5:07 pm

1 stop6h 12m

$415

LondonChicago

YXU - ORD

YXUORD

London

Wed 7/23

9:45 pm-4:44 pm

2 stops19h 59m

Chicago O'Hare Intl

Wed 7/30

5:30 pm-5:14 am

1 stop10h 44m

$461

LondonChicago

YXU - ORD

YXUORD

London

Wed 7/23

9:55 am-4:52 pm

2 stops7h 57m

Chicago O'Hare Intl

Wed 7/30

10:50 am-9:27 pm

2 stops9h 37m

$478

LondonChicago

YXU - MDW

YXUMDW

London

Wed 7/23

8:00 pm-4:24 pm

3 stops21h 24m

Chicago Midway

Wed 7/30

9:40 am-5:14 am

3 stops18h 34m

$754

LondonChicago

YXU - MDW

YXUMDW

London

Wed 7/23

6:00 am-5:39 pm

2 stops12h 39m

Chicago Midway

Wed 7/30

12:43 pm-5:14 am

2 stops15h 31m

$1,709

LondonChicago

YXU - ORD

YXUORD

London

Sun 6/22

6:15 am-9:09 am

1 stop3h 54m

$230

LondonChicago

YXU - ORD

YXUORD

London

Fri 7/25

6:00 am-2:13 pm

3 stops33h 13m

$231

LondonChicago

YXU - ORD

YXUORD

London

Sun 6/22

6:15 am-9:09 am

1 stop3h 54m

$255

LondonChicago

YXU - MDW

YXUMDW

London

Sat 7/26

6:00 am-7:41 pm

2 stops38h 41m

$499

LondonChicago

YXU - MDW

YXUMDW

London

Fri 7/25

8:00 pm-5:10 pm

3 stops22h 10m

$544

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 June 12, 2025.
See what other customers who have flown with United Airlines, WestJet and Air Canada from London to Illinois have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

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
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

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
2,868 reviews
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

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
7.1
Good
9,537 reviews
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

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 Air Canada. According to our data, you can fly for as low as $230. Users have also found prices from $255 and $544 on United Airlines and WestJet, 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 $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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