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Cheap flights from London, ON to Illinois from C$ 356

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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
8 Aug — 15 Aug1
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 9 July 2026.

Thu 23/710:05 a.m.
YXU
-
ORD
1 stop5h 50m
Air Canada
Wed 29/79:50 a.m.
ORD
-
YXU
1 stop4h 02m
Air Canada
Deal found 7/7C$ 715
Tue 18/85:55 p.m.
YXU
-
ORD
1 stop23h 45m
WestJet
Tue 25/85:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Deal found 7/7C$ 723
Tue 20/1010:05 a.m.
YXU
-
ORD
1 stop5h 50m
Air Canada
Sat 24/103:45 p.m.
ORD
-
YXU
1 stop4h 55m
Air Canada
Deal found 7/7C$ 758
Tue 18/810:05 a.m.
YXU
-
ORD
1 stop5h 50m
Air Canada
Tue 25/83:45 p.m.
ORD
-
YXU
1 stop4h 55m
Air Canada
Deal found 9/7C$ 764
Tue 18/82:40 p.m.
YXU
-
MDW
3 stops19h 37m
Multiple Airlines
Tue 25/810:25 a.m.
MDW
-
YXU
3 stops17h 55m
Multiple Airlines
Deal found 7/7C$ 1,355
Tue 4/82:40 p.m.
YXU
-
MDW
3 stops22h 59m
Multiple Airlines
Tue 11/810:25 a.m.
MDW
-
YXU
3 stops17h 55m
Multiple Airlines
Deal found 5/7C$ 1,404
Tue 4/88:40 p.m.
YXU
-
MDW
2 stops14h 19m
WestJet
Tue 11/81:25 p.m.
MDW
-
YXU
2 stops14h 55m
WestJet
Deal found 5/7C$ 1,504
Wed 25/118:00 p.m.
YXU
-
MDW
2 stops21h 50m
WestJet
Sat 28/1110:35 a.m.
MDW
-
YXU
2 stops30h 40m
WestJet
Deal found 5/7C$ 1,873
Tue 18/86:10 a.m.
YXU
-
MDW
2 stops12h 51m
WestJet
Tue 25/89:59 a.m.
MDW
-
YXU
2 stops18h 21m
WestJet
Deal found 9/7C$ 1,958
Sun 12/76:10 a.m.
YXU
-
MDW
2 stops13h 08m
WestJet
Mon 13/79:54 a.m.
MDW
-
YXU
2 stops26h 56m
WestJet
Deal found 8/7C$ 2,275
Wed 19/86:10 a.m.
YXU
-
MDW
2 stops13h 23m
WestJet
Wed 26/812:46 p.m.
MDW
-
YXU
2 stops15h 34m
WestJet
Deal found 5/7C$ 2,626

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 9 July 2026.

Round-trip from

C$ 715

One-way from

C$ 356
Air Canada
  • Air Canada
  • 23/7-29/7
  • 2 total stops
  • 9h 52m total
  • London to Illinois
Search Deals
WestJet
  • WestJet
  • 6/8
  • 1 total stop
  • 11h 30m 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 9 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
Quickest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Sat 31/10

5:30 a.m.-9:23 a.m.

1 stop4h 53m

Chicago O'Hare Intl

Wed 4/11

8:45 a.m.-2:47 p.m.

1 stop5h 02m

C$ 758

LondonChicago

YXU - ORD

YXUORD

London

Tue 20/10

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

1 stop4h 20m

Chicago O'Hare Intl

Sat 24/10

11:05 a.m.-9:40 p.m.

2 stops9h 35m

C$ 763

LondonChicago

YXU - ORD

YXUORD

London

Tue 18/8

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

1 stop5h 50m

Chicago O'Hare Intl

Tue 25/8

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

1 stop4h 55m

C$ 764

LondonChicago

YXU - ORD

YXUORD

London

Tue 18/8

8:40 p.m.-8:08 p.m.

2 stops24h 28m

Chicago O'Hare Intl

Tue 25/8

5:30 p.m.-4:45 p.m.

1 stop22h 15m

C$ 783

LondonChicago

YXU - ORD

YXUORD

London

Tue 18/8

5:40 a.m.-2:30 p.m.

2 stops9h 50m

Chicago O'Hare Intl

Tue 25/8

8:45 a.m.-5:42 p.m.

2 stops7h 57m

C$ 861

LondonChicago

YXU - ORD

YXUORD

London

Sat 31/10

3:25 p.m.-11:37 p.m.

2 stops9h 12m

Chicago O'Hare Intl

Wed 4/11

6:00 a.m.-2:47 p.m.

2 stops7h 47m

C$ 861

LondonChicago

YXU - MDW

YXUMDW

London

Tue 18/8

2:40 p.m.-9:17 a.m.

3 stops19h 37m

Chicago Midway

Tue 25/8

10:25 a.m.-5:20 a.m.

3 stops17h 55m

C$ 1,355

LondonChicago

YXU - MDW

YXUMDW

London

Tue 4/8

8:40 p.m.-9:59 a.m.

2 stops14h 19m

Chicago Midway

Tue 11/8

1:25 p.m.-5:20 a.m.

2 stops14h 55m

C$ 1,504

LondonChicago

YXU - MDW

YXUMDW

London

Wed 25/11

8:00 p.m.-4:50 p.m.

2 stops21h 50m

Chicago Midway

Sat 28/11

10:35 a.m.-6:15 p.m.

2 stops30h 40m

C$ 1,873

LondonChicago

YXU - MDW

YXUMDW

London

Tue 18/8

6:10 a.m.-6:01 p.m.

2 stops12h 51m

Chicago Midway

Tue 25/8

9:59 a.m.-5:20 a.m.

2 stops18h 21m

C$ 1,958

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/7

Showing 1-10 of 24 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 53m. 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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Alternative routes for London to Illinois

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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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