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Cheap flights from London, ON to Illinois from C$ 364

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
26 Aug — 2 Sep1
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 27 July 2026.

Fri 28/83:30 p.m.
YXU
-
ORD
1 stop5h 22m
Air Canada
Sun 30/89:50 a.m.
ORD
-
YXU
1 stop4h 00m
Air Canada
Deal found 25/7C$ 776
Fri 4/92:40 p.m.
YXU
-
ORD
2 stops27h 00m
WestJet
Mon 7/95:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Deal found 22/7C$ 820
Thu 1/106:10 a.m.
YXU
-
ORD
1 stop11h 30m
WestJet
Mon 5/105:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Deal found 26/7C$ 829
Wed 9/910:05 a.m.
YXU
-
ORD
1 stop4h 18m
Air Canada
Wed 16/93:45 p.m.
ORD
-
YXU
1 stop4h 55m
Air Canada
Deal found 26/7C$ 850
Fri 28/82:40 p.m.
YXU
-
ORD
2 stops27h 00m
WestJet
Sun 30/85:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Deal found 25/7C$ 860
Wed 9/910:05 a.m.
YXU
-
ORD
1 stop4h 18m
Multiple Airlines
Wed 16/93:40 p.m.
ORD
-
YXU
3 stops24h 05m
Multiple Airlines
Deal found 26/7C$ 868
Thu 1/105:40 a.m.
YXU
-
ORD
2 stops10h 12m
Air Canada
Mon 5/109:50 a.m.
ORD
-
YXU
1 stop4h 05m
Air Canada
Deal found 26/7C$ 886
Thu 19/119:15 a.m.
YXU
-
ORD
1 stop4h 58m
Air Canada
Sun 22/114:30 p.m.
ORD
-
YXU
1 stop4h 22m
Air Canada
Deal found 25/7C$ 896
Wed 12/810:05 a.m.
YXU
-
ORD
1 stop4h 17m
Air Canada
Thu 13/83:45 p.m.
ORD
-
YXU
1 stop4h 55m
Air Canada
Deal found 24/7C$ 900
Fri 4/98:40 p.m.
YXU
-
MDW
3 stops18h 55m
Multiple Airlines
Mon 7/911:45 a.m.
MDW
-
YXU
3 stops16h 35m
Multiple Airlines
Deal found 22/7C$ 1,498
Wed 9/95:40 a.m.
YXU
-
MDW
2 stops12h 17m
Multiple Airlines
Wed 16/91:19 p.m.
MDW
-
YXU
3 stops26h 26m
Multiple Airlines
Deal found 26/7C$ 1,540
Fri 4/96:10 a.m.
YXU
-
MDW
2 stops13h 23m
WestJet
Mon 7/91:19 p.m.
MDW
-
YXU
2 stops15h 01m
WestJet
Deal found 22/7C$ 2,123

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 27 July 2026.

Round-trip from

C$ 776

One-way from

C$ 364
Air Canada
  • Air Canada
  • 28/8-30/8
  • 2 total stops
  • 9h 22m total
  • London to Illinois
Search Deals
WestJet
  • WestJet
  • 4/9
  • 2 total stops
  • 27h 00m 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 27 July 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

Thu 1/10

6:10 a.m.-4:40 p.m.

1 stop11h 30m

Chicago O'Hare Intl

Mon 5/10

5:30 p.m.-5:20 a.m.

1 stop10h 50m

C$ 829

LondonChicago

YXU - ORD

YXUORD

London

Wed 9/9

10:05 a.m.-1:23 p.m.

1 stop4h 18m

Chicago O'Hare Intl

Wed 16/9

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

1 stop4h 55m

C$ 850

LondonChicago

YXU - ORD

YXUORD

London

Sat 9/1

5:30 a.m.-2:52 p.m.

2 stops10h 22m

Chicago O'Hare Intl

Wed 13/1

8:45 a.m.-2:42 p.m.

1 stop4h 57m

C$ 885

LondonChicago

YXU - ORD

YXUORD

London

Thu 1/10

5:40 a.m.-2:52 p.m.

2 stops10h 12m

Chicago O'Hare Intl

Mon 5/10

9:50 a.m.-2:55 p.m.

1 stop4h 05m

C$ 886
Quickest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Wed 12/8

10:05 a.m.-1:22 p.m.

1 stop4h 17m

Chicago O'Hare Intl

Thu 13/8

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

1 stop4h 55m

C$ 900

LondonChicago

YXU - ORD

YXUORD

London

Wed 9/9

6:10 a.m.-9:00 a.m.

2 stops27h 50m

Chicago O'Hare Intl

Wed 16/9

3:40 p.m.-4:45 p.m.

3 stops24h 05m

C$ 924

LondonChicago

YXU - ORD

YXUORD

London

Sat 9/1

3:20 p.m.-11:15 p.m.

2 stops8h 55m

Chicago O'Hare Intl

Wed 13/1

1:10 p.m.-9:47 p.m.

2 stops7h 37m

C$ 985

LondonChicago

YXU - MDW

YXUMDW

London

Wed 9/9

5:40 a.m.-4:57 p.m.

2 stops12h 17m

Chicago Midway

Wed 16/9

1:19 p.m.-4:45 p.m.

3 stops26h 26m

C$ 1,540

LondonChicago

YXU - MDW

YXUMDW

London

Fri 4/9

8:40 p.m.-2:35 p.m.

3 stops18h 55m

Chicago Midway

Mon 7/9

1:19 p.m.-5:20 a.m.

2 stops15h 01m

C$ 1,798

LondonChicago

YXU - MDW

YXUMDW

London

Fri 4/9

6:10 a.m.-6:33 p.m.

2 stops13h 23m

Chicago Midway

Mon 7/9

1:19 p.m.-5:20 a.m.

2 stops15h 01m

C$ 2,123

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/7

Showing 1-10 of 21 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 18m. Fly via WestJet or Air Canada 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?

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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