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Cheap flights from London, ON to Illinois from C$ 339

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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
27 Jun — 4 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Illinois

Enter your travel dates to find the best prices.

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 28 May 2026.

Wed 21/1010:05 a.m.
YXU
-
ORD
1 stop5h 50m
Air Canada
Sat 24/103:45 p.m.
ORD
-
YXU
1 stop4h 55m
Air Canada
Deal found 27/5C$ 701
Sun 7/610:05 a.m.
YXU
-
ORD
1 stop4h 20m
Air Canada
Mon 15/69:55 a.m.
ORD
-
YXU
1 stop4h 03m
Air Canada
Deal found 24/5C$ 734
Wed 24/610:05 a.m.
YXU
-
ORD
1 stop6h 45m
United Airlines
Wed 1/72:56 p.m.
ORD
-
YXU
1 stop5h 44m
United Airlines
Deal found 26/5C$ 824
Sun 7/65:10 a.m.
YXU
-
ORD
1 stop5h 35m
United Airlines
Mon 15/65:00 a.m.
ORD
-
YXU
2 stops8h 58m
United Airlines
Deal found 23/5C$ 926
Sun 7/66:10 a.m.
YXU
-
MDW
2 stops13h 08m
WestJet
Mon 15/61:49 p.m.
MDW
-
YXU
2 stops23h 01m
WestJet
Deal found 23/5C$ 1,854
Wed 24/66:10 a.m.
YXU
-
MDW
2 stops13h 08m
WestJet
Wed 1/71:49 p.m.
MDW
-
YXU
2 stops14h 31m
WestJet
Deal found 26/5C$ 3,339
Wed 10/65:55 p.m.
YXU
-
MDW
2 stops25h 36m
WestJet
Sun 14/69:54 a.m.
MDW
-
YXU
2 stops29h 51m
WestJet
Deal found 23/5C$ 3,487
Fri 29/52:40 p.m.
YXU
-
MDW
3 stops28h 16m
WestJet
Sun 31/59:23 a.m.
MDW
-
YXU
2 stops18h 57m
WestJet
Deal found 27/5C$ 3,597

Find flight deals from London to Illinois

Keep the following information in mind while searching for London to Illinois flight deals. Data was last updated 28 May 2026.

Round-trip from

C$ 701

One-way from

C$ 339
Air Canada
  • Air Canada
  • 21/10-24/10
  • 2 total stops
  • 9h 15m total
  • London to Illinois
Search Deals
Air Canada
  • Air Canada
  • 11/7
  • 1 total stop
  • 4h 17m total
  • 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 629,999 searches. Data last updated 28 May 2026.
Use the filters below to find and compare flights from London to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Wed 21/10

5:40 a.m.-9:00 a.m.

1 stop4h 20m

Chicago O'Hare Intl

Sat 24/10

3:45 p.m.-9:40 p.m.

1 stop4h 55m

C$ 701
Quickest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Sun 7/6

10:05 a.m.-1:25 p.m.

1 stop4h 20m

Chicago O'Hare Intl

Mon 15/6

9:55 a.m.-2:58 p.m.

1 stop4h 03m

C$ 734

LondonChicago

YXU - MDW

YXUMDW

London

Sun 7/6

6:10 a.m.-6:18 p.m.

2 stops13h 08m

Chicago Midway

Mon 15/6

1:49 p.m.-1:50 p.m.

2 stops23h 01m

C$ 1,854

LondonChicago

YXU - MDW

YXUMDW

London

Wed 24/6

6:10 a.m.-6:18 p.m.

2 stops13h 08m

Chicago Midway

Wed 1/7

1:49 p.m.-5:20 a.m.

2 stops14h 31m

C$ 3,339

LondonChicago

YXU - MDW

YXUMDW

London

Wed 10/6

5:55 p.m.-6:31 p.m.

2 stops25h 36m

Chicago Midway

Sun 14/6

9:54 a.m.-4:45 p.m.

2 stops29h 51m

C$ 3,487
Cheapest one-way
Quickest one-way

LondonChicago

YXU - ORD

YXUORD

London

Wed 8/7

3:30 p.m.-7:52 p.m.

1 stop5h 22m

C$ 394

LondonChicago

YXU - ORD

YXUORD

London

Thu 9/7

10:05 a.m.-2:55 p.m.

1 stop5h 50m

C$ 394

LondonChicago

YXU - ORD

YXUORD

London

Sat 11/7

3:30 p.m.-7:27 a.m.

2 stops16h 57m

C$ 449

LondonChicago

YXU - ORD

YXUORD

London

Thu 9/7

5:10 a.m.-10:50 a.m.

2 stops6h 40m

C$ 449

LondonChicago

YXU - ORD

YXUORD

London

Wed 8/7

5:10 a.m.-1:08 p.m.

2 stops8h 58m

C$ 449

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/5

Showing 1-10 of 15 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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.

  • How long is the flight from London, Ontario to Illinois?

    There are many flights that can get you from London, Ontario to Illinois in 4h 20m. Fly via Air Canada or WestJet to get the fastest option. Airlines will cover a distance of 565 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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.

See more FAQs

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Fly with Cheapflights

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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?

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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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