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Cheap flights from London, ON to Illinois from C$ 220

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 24/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
11 Oct — 18 Oct1
1 adult
1 adult, Economy

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 11 September 2025.

Round-trip from

C$ 475

One-way from

C$ 220
WestJet
  • WestJet
  • 15/10-17/10
  • 2 total stops
  • 32h 25m total
  • London to Illinois
Search Deals
WestJet
  • WestJet
  • 24/10
  • 1 total stop
  • 21h 43m 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 11 September 2025.

Wed 15/108:00 p.m.YXU - ORD
1 stop21h 43mWestJet
Fri 17/105:30 p.m.ORD - YXU
1 stop10h 42mWestJet
Deal found 11/9C$ 475
Sun 26/108:00 p.m.YXU - ORD
1 stop18h 35mMultiple Airlines
Sun 2/111:26 p.m.ORD - YXU
2 stops28h 46mMultiple Airlines
Deal found 11/9C$ 522
Mon 24/119:25 a.m.YXU - ORD
1 stop4h 36mAir Canada
Mon 1/122:00 p.m.ORD - YXU
1 stop6h 21mAir Canada
Deal found 10/9C$ 575
Sun 26/108:00 p.m.YXU - ORD
1 stop18h 35mWestJet
Sun 2/112:20 p.m.ORD - YXU
1 stop27h 52mWestJet
Deal found 11/9C$ 632
Fri 7/119:25 a.m.YXU - ORD
1 stop4h 36mAir Canada
Mon 10/1110:00 a.m.ORD - YXU
1 stop6h 05mAir Canada
Deal found 11/9C$ 649
Fri 31/109:25 a.m.YXU - ORD
1 stop6h 45mAir Canada
Mon 3/113:55 p.m.ORD - YXU
1 stop4h 26mAir Canada
Deal found 10/9C$ 650
Fri 24/106:15 a.m.YXU - ORD
1 stop6h 48mUnited Airlines
Fri 31/101:00 p.m.ORD - YXU
2 stops7h 21mUnited Airlines
Deal found 9/9C$ 673
Fri 7/115:45 a.m.YXU - ORD
1 stop4h 28mMultiple Airlines
Mon 10/117:20 a.m.ORD - YXU
2 stops8h 45mMultiple Airlines
Deal found 10/9C$ 722
Fri 31/108:00 p.m.YXU - MDW
2 stops16h 50mMultiple Airlines
Mon 3/119:20 a.m.MDW - YXU
3 stops32h 52mMultiple Airlines
Deal found 10/9C$ 974
Fri 10/103:40 p.m.YXU - MDW
3 stops27h 03mMultiple Airlines
Mon 13/107:10 p.m.MDW - YXU
2 stops18h 52mMultiple Airlines
Deal found 10/9C$ 1,113
Fri 31/108:00 p.m.YXU - MDW
2 stops18h 08mWestJet
Mon 3/111:48 p.m.MDW - YXU
2 stops28h 24mWestJet
Deal found 10/9C$ 2,043
Thu 9/106:00 a.m.YXU - MDW
2 stops17h 14mWestJet
Mon 13/1012:48 p.m.MDW - YXU
2 stops29h 19mWestJet
Deal found 9/9C$ 2,083

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 11 September 2025.
Use the filters below to find and compare flights from London to Illinois that are best for you.

Fly from

London

Fly to

Illinois

Route

Depart

Return

Price

LondonChicago

YXU - ORD

YXUORD

London

Sun 26/10

8:00 p.m.-1:35 p.m.

1 stop18h 35m

Chicago O'Hare Intl

Sun 2/11

1:26 p.m.-7:12 p.m.

2 stops28h 46m

C$ 522

LondonChicago

YXU - ORD

YXUORD

London

Mon 24/11

9:25 a.m.-1:01 p.m.

1 stop4h 36m

Chicago O'Hare Intl

Mon 1/12

2:00 p.m.-9:21 p.m.

1 stop6h 21m

C$ 575

LondonChicago

YXU - ORD

YXUORD

London

Sun 26/10

8:00 p.m.-1:35 p.m.

1 stop18h 35m

Chicago O'Hare Intl

Sun 2/11

2:20 p.m.-7:12 p.m.

1 stop27h 52m

C$ 632

LondonChicago

YXU - ORD

YXUORD

London

Fri 7/11

9:25 a.m.-1:01 p.m.

1 stop4h 36m

Chicago O'Hare Intl

Mon 10/11

10:00 a.m.-5:05 p.m.

1 stop6h 05m

C$ 649

LondonChicago

YXU - ORD

YXUORD

London

Fri 7/11

5:45 a.m.-9:13 a.m.

1 stop4h 28m

Chicago O'Hare Intl

Sun 9/11

2:00 p.m.-9:21 p.m.

1 stop6h 21m

C$ 649

LondonChicago

YXU - ORD

YXUORD

London

Sat 8/11

9:25 a.m.-3:10 p.m.

1 stop6h 45m

Chicago O'Hare Intl

Mon 10/11

3:55 p.m.-9:21 p.m.

1 stop4h 26m

C$ 649

LondonChicago

YXU - ORD

YXUORD

London

Fri 31/10

9:25 a.m.-3:10 p.m.

1 stop6h 45m

Chicago O'Hare Intl

Mon 3/11

3:55 p.m.-9:21 p.m.

1 stop4h 26m

C$ 650

LondonChicago

YXU - ORD

YXUORD

London

Fri 24/10

6:15 a.m.-12:03 p.m.

1 stop6h 48m

Chicago O'Hare Intl

Fri 31/10

1:00 p.m.-9:21 p.m.

2 stops7h 21m

C$ 673

LondonChicago

YXU - MDW

YXUMDW

London

Fri 31/10

8:00 p.m.-11:50 a.m.

2 stops16h 50m

Chicago Midway

Mon 3/11

9:20 a.m.-7:12 p.m.

3 stops32h 52m

C$ 974

LondonChicago

YXU - MDW

YXUMDW

London

Fri 10/10

3:40 p.m.-5:43 p.m.

3 stops27h 03m

Chicago Midway

Mon 13/10

7:10 p.m.-3:02 p.m.

2 stops18h 52m

C$ 1,113

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 25 results
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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

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$ 349). 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.

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 11 September 2025.
Read reviews from past customers who have flown Air Canada from London to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,000 reviews
Check prices

Crew

7.8

Food

6.3

Overall

7.1

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.
Air Canada
7.1
Good
10,000 reviews
Air Canada
7.1
Good
10,000 reviews
Check prices

Crew

7.8

Food

6.3

Overall

7.1

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.

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 36m. 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.

  • 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$ 349). 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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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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