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Cheap flights from London, ON to Illinois from C$ 372

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 24/7. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
31 May — 7 Jun1
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 1 May 2026.

Sat 23/56:10 a.m.
YXU
-
ORD
1 stop11h 30m
WestJet
Mon 25/55:30 p.m.
ORD
-
YXU
2 stops19h 20m
WestJet
Deal found 27/4C$ 512
Fri 22/52:40 p.m.
YXU
-
ORD
2 stops27h 00m
WestJet
Sun 24/55:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Deal found 28/4C$ 658
Sun 17/55:10 a.m.
YXU
-
ORD
1 stop4h 50m
Air Canada
Tue 26/53:50 p.m.
ORD
-
YXU
1 stop4h 48m
Air Canada
Deal found 30/4C$ 660
Sat 23/55:10 a.m.
YXU
-
ORD
1 stop4h 50m
Air Canada
Wed 27/52:15 p.m.
ORD
-
YXU
1 stop6h 23m
Air Canada
Deal found 26/4C$ 683
Tue 9/610:05 a.m.
YXU
-
ORD
1 stop5h 50m
Air Canada
Tue 16/69:55 a.m.
ORD
-
YXU
1 stop4h 03m
Air Canada
Deal found 26/4C$ 686
Thu 11/66:10 a.m.
YXU
-
MDW
2 stops13h 21m
WestJet
Thu 18/61:21 p.m.
MDW
-
YXU
3 stops23h 29m
WestJet
Deal found 27/4C$ 1,501
Thu 11/65:55 p.m.
YXU
-
MDW
3 stops21h 40m
Multiple Airlines
Thu 18/69:17 a.m.
MDW
-
YXU
3 stops27h 33m
Multiple Airlines
Deal found 27/4C$ 1,529
Sat 13/66:10 a.m.
YXU
-
MDW
2 stops12h 44m
Multiple Airlines
Sat 20/69:54 a.m.
MDW
-
YXU
3 stops26h 56m
Multiple Airlines
Deal found 28/4C$ 1,537
Sat 23/55:55 p.m.
YXU
-
MDW
3 stops25h 01m
WestJet
Mon 25/59:23 a.m.
MDW
-
YXU
2 stops18h 57m
WestJet
Deal found 27/4C$ 1,661
Fri 22/55:55 p.m.
YXU
-
MDW
3 stops25h 01m
WestJet
Sun 24/56:36 p.m.
MDW
-
YXU
3 stops33h 44m
WestJet
Deal found 28/4C$ 1,683

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 1 May 2026.

Round-trip from

C$ 512

One-way from

C$ 372
WestJet
  • WestJet
  • 23/5-25/5
  • 3 total stops
  • 30h 50m total
  • London to Illinois
Search Deals
Air Canada
  • Air Canada
  • 11/6
  • 1 total stop
  • 4h 55m 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 1 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

Sun 17/5

5:10 a.m.-9:00 a.m.

1 stop4h 50m

Chicago O'Hare Intl

Tue 26/5

3:50 p.m.-9:38 p.m.

1 stop4h 48m

C$ 660

LondonChicago

YXU - ORD

YXUORD

London

Sat 23/5

12:20 p.m.-4:59 p.m.

1 stop5h 39m

Chicago O'Hare Intl

Wed 27/5

2:15 p.m.-9:38 p.m.

1 stop6h 23m

C$ 685
Quickest round-trip

LondonChicago

YXU - ORD

YXUORD

London

Fri 29/5

12:20 p.m.-4:59 p.m.

1 stop5h 39m

Chicago O'Hare Intl

Mon 1/6

10:00 a.m.-2:58 p.m.

1 stop3h 58m

C$ 696

LondonChicago

YXU - ORD

YXUORD

London

Thu 11/6

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

1 stop4h 20m

Chicago O'Hare Intl

Thu 18/6

8:40 p.m.-9:17 a.m.

1 stop11h 37m

C$ 719

LondonChicago

YXU - ORD

YXUORD

London

Tue 9/6

10:05 a.m.-11:26 p.m.

2 stops14h 21m

Chicago O'Hare Intl

Tue 16/6

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

1 stop4h 03m

C$ 786

LondonChicago

YXU - MDW

YXUMDW

London

Thu 11/6

5:55 p.m.-2:35 p.m.

3 stops21h 40m

Chicago Midway

Thu 18/6

9:17 a.m.-1:50 p.m.

3 stops27h 33m

C$ 1,529

LondonChicago

YXU - MDW

YXUMDW

London

Sat 13/6

6:10 a.m.-5:54 p.m.

2 stops12h 44m

Chicago Midway

Sat 20/6

9:54 a.m.-1:50 p.m.

3 stops26h 56m

C$ 1,537

LondonChicago

YXU - MDW

YXUMDW

London

Thu 11/6

6:10 a.m.-6:31 p.m.

2 stops13h 21m

Chicago Midway

Thu 18/6

1:21 p.m.-1:50 p.m.

3 stops23h 29m

C$ 1,581

LondonChicago

YXU - MDW

YXUMDW

London

Fri 22/5

5:55 p.m.-5:56 p.m.

3 stops25h 01m

Chicago Midway

Sun 24/5

6:36 p.m.-5:20 a.m.

3 stops33h 44m

C$ 1,683

LondonChicago

YXU - MDW

YXUMDW

London

Sat 23/5

5:55 p.m.-5:56 p.m.

3 stops25h 01m

Chicago Midway

Mon 25/5

9:23 a.m.-1:50 p.m.

3 stops27h 27m

C$ 1,780

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/4

Showing 1-10 of 26 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 50m. 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?

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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