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Cheap flights from London, ON to Illinois from C$ 236

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
25 Feb — 4 Mar1
1 adult

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 20 February 2025.

Round-trip from

C$ 645

One-way from

C$ 236
WestJet
  • WestJet
  • 6/4-20/4
  • 2 total stops
  • 46h 24m total
  • London to Illinois
Search Deals
10/3
  • 10/3
  • 1 total stop
  • 22h 19m total
  • London to Illinois
Search Deals

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 20 February 2025.

Sun 6/48:00 p.m.YXU - ORD
1 stop20h 56mWestJet
Sun 20/44:45 p.m.ORD - YXU
1 stop25h 28mWestJet
Deal found 19/2C$ 645
Sun 6/43:25 p.m.YXU - ORD
2 stops16h 17mMultiple Airlines
Mon 14/44:45 p.m.ORD - YXU
1 stop25h 28mMultiple Airlines
Deal found 19/2C$ 692
Fri 24/106:15 a.m.YXU - ORD
1 stop6h 44mAir Canada
Sun 26/104:40 p.m.ORD - YXU
1 stop4h 05mAir Canada
Deal found 20/2C$ 891
Fri 4/43:25 p.m.YXU - ORD
1 stop5h 05mUnited Airlines
Sat 19/42:00 p.m.ORD - YXU
1 stop5h 18mUnited Airlines
Deal found 19/2C$ 972
Tue 18/38:00 p.m.YXU - MDW
2 stops19h 15mWestJet
Thu 20/312:51 p.m.MDW - YXU
2 stops29h 22mWestJet
Deal found 20/2C$ 2,381

Find flights from London to Illinois within your budget

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 629,999 searches. Data last updated 20 February 2025.

Fly from

London

Fly to

Illinois

Route

Depart

Return

Price

LondonChicago

YXU - ORD

YXUORD

London

Sun 6/4

8:00 p.m.-3:56 p.m.

1 stop20h 56m

Chicago O'Hare Intl

Sun 20/4

4:45 p.m.-7:13 p.m.

1 stop25h 28m

C$ 645

LondonChicago

YXU - ORD

YXUORD

London

Sun 6/4

3:25 p.m.-6:42 a.m.

2 stops16h 17m

Chicago O'Hare Intl

Mon 14/4

4:45 p.m.-7:13 p.m.

1 stop25h 28m

C$ 692

LondonChicago

YXU - ORD

YXUORD

London

Sat 5/4

5:15 a.m.-12:03 p.m.

2 stops7h 48m

Chicago O'Hare Intl

Sun 20/4

9:40 a.m.-2:48 p.m.

1 stop4h 08m

C$ 940

LondonChicago

YXU - ORD

YXUORD

London

Fri 4/4

3:25 p.m.-7:30 p.m.

1 stop5h 05m

Chicago O'Hare Intl

Sat 19/4

2:00 p.m.-8:18 p.m.

1 stop5h 18m

C$ 972

LondonChicago

YXU - MDW

YXUMDW

London

Tue 18/3

8:00 p.m.-2:15 p.m.

2 stops19h 15m

Chicago Midway

Thu 20/3

12:51 p.m.-7:13 p.m.

2 stops29h 22m

C$ 2,381

LondonChicago

YXU - ORD

YXUORD

London

Mon 10/3

12:20 p.m.-9:39 a.m.

1 stop22h 19m

C$ 236

LondonChicago

YXU - ORD

YXUORD

London

Sun 6/4

9:55 a.m.-2:55 p.m.

1 stop6h 00m

C$ 430

LondonChicago

YXU - ORD

YXUORD

London

Sun 6/4

3:25 p.m.-8:41 a.m.

2 stops18h 16m

C$ 521

LondonChicago

YXU - MDW

YXUMDW

London

Sun 6/4

8:00 p.m.-6:18 p.m.

2 stops23h 18m

C$ 1,089

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/2

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.

Travel insights for flights from London to Illinois

Get recent, data-driven insights about flights from London to Illinois including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from London, Ontario to Illinois (average of C$ 261). Flying from London, Ontario to Illinois in March is currently the most expensive (average of C$ 355). 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.

What is the cheapest time of day to fly from YXU to IL?

Find hourly flight availability from London to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 February 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London, Ontario to Illinois as you normally would.

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 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 20 February 2025.
United Airlines
7.4
Good
8,765 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Crew

8.1

Boarding

7.7

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
8,765 reviews
United Airlines
7.4
Good
8,765 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Crew

8.1

Boarding

7.7

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
2,801 reviews
United Airlines
7.4
Good
8,765 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Crew

8.1

Boarding

7.7

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
8,748 reviews
United Airlines
7.4
Good
8,765 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Crew

8.1

Boarding

7.7

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?

    If you book a flight to Illinois from London, you will be flying from London, which is the city’s only airport. London (YXU) is located 8.6 km from the centre of London.

  • 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 C$ 430. Users have also found prices from C$ 521 and C$ 1,089 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, January is the cheapest month in which you can book a flight from London, Ontario to Illinois (average of C$ 261). Flying from London, Ontario to Illinois in March is currently the most expensive (average of C$ 355). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from London to Illinois

Discover the top airline that operate flights from London to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 785AverageC$ 904FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Illinois?

Cheapflights makes it easy to find London to Illinois flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from London to Illinois?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Illinois for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to Illinois with no change fees?

Yes! Cheapflights helps users easily find flights from London to Illinois with no change fees.

Can Cheapflights notify me if prices for flights from London to Illinois become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Illinois from London today and book when prices fit your budget.

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