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Cheap flights from London, ON to Illinois from C$ 254

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
31 Dec — 7 Jan1
1 adult
1 adult, Economy, 0 bags

Find flight deals from London to Illinois

Enter your travel dates to find the best prices.

Best flights from London to Illinois
Discover carefully curated flight deals from London to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 1 December 2025.

Mon 19/19:50 a.m.YXU - ORD
1 stop6h 20mAir Canada
Fri 23/12:00 p.m.ORD - YXU
1 stop6h 20mAir Canada
Deal found 28/11C$ 605
Wed 14/15:40 p.m.YXU - ORD
1 stop5h 25mUnited Airlines
Wed 21/13:55 p.m.ORD - YXU
1 stop4h 26mUnited Airlines
Deal found 30/11C$ 680
Mon 19/15:40 p.m.YXU - ORD
2 stops6h 59mUnited Airlines
Fri 23/110:52 a.m.ORD - YXU
2 stops9h 29mUnited Airlines
Deal found 28/11C$ 686
Mon 19/18:10 p.m.YXU - MDW
2 stops17h 59mWestJet
Thu 22/19:50 a.m.MDW - YXU
2 stops19h 44mWestJet
Deal found 28/11C$ 1,826
Wed 14/18:10 p.m.YXU - MDW
2 stops17h 59mWestJet
Wed 21/11:49 p.m.MDW - YXU
2 stops15h 45mWestJet
Deal found 30/11C$ 1,912

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 1 December 2025.

Round-trip from

C$ 605

One-way from

C$ 254
Air Canada
  • Air Canada
  • 19/1-23/1
  • 2 total stops
  • 12h 40m total
  • London to Illinois
Search Deals
14/1
  • 14/1
  • 2 total stops
  • 36h 07m 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 December 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

Mon 19/1

9:50 a.m.-3:10 p.m.

1 stop6h 20m

Chicago O'Hare Intl

Fri 23/1

2:00 p.m.-9:20 p.m.

1 stop6h 20m

C$ 605

LondonChicago

YXU - ORD

YXUORD

London

Wed 14/1

5:40 p.m.-10:05 p.m.

1 stop5h 25m

Chicago O'Hare Intl

Wed 21/1

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

1 stop4h 26m

C$ 680

LondonChicago

YXU - ORD

YXUORD

London

Mon 19/1

5:40 p.m.-11:39 p.m.

2 stops6h 59m

Chicago O'Hare Intl

Fri 23/1

10:52 a.m.-9:21 p.m.

2 stops9h 29m

C$ 686

LondonChicago

YXU - MDW

YXUMDW

London

Mon 19/1

8:10 p.m.-1:09 p.m.

2 stops17h 59m

Chicago Midway

Thu 22/1

9:50 a.m.-6:34 a.m.

2 stops19h 44m

C$ 1,826

LondonChicago

YXU - MDW

YXUMDW

London

Wed 14/1

8:10 p.m.-1:09 p.m.

2 stops17h 59m

Chicago Midway

Wed 21/1

1:49 p.m.-6:34 a.m.

2 stops15h 45m

C$ 1,912

LondonChicago

YXU - MDW

YXUMDW

London

Wed 14/1

8:10 p.m.-7:17 a.m.

2 stops36h 07m

C$ 254

LondonChicago

YXU - ORD

YXUORD

London

Wed 14/1

8:10 p.m.-10:44 p.m.

2 stops27h 34m

C$ 254

LondonChicago

YXU - ORD

YXUORD

London

Wed 14/1

5:10 a.m.-9:13 a.m.

1 stop5h 03m

C$ 332

LondonChicago

YXU - ORD

YXUORD

London

Tue 13/1

5:40 p.m.-10:05 p.m.

1 stop5h 25m

C$ 367

LondonChicago

YXU - ORD

YXUORD

London

Sat 6/12

5:40 p.m.-12:47 p.m.

3 stops20h 07m

C$ 401

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/11

Showing 1-10 of 12 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, April is the cheapest month in which you can book a flight from London, Ontario to Illinois (average of C$ 117). Flying from London, Ontario to Illinois in February is currently the most expensive (average of C$ 265). 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 1 December 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
10,493 reviews
Check prices

Boarding

7.3

Entertainment

6.8

Crew

7.8

Food

6.3

Comfort

7.1

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍
Air Canada
7.1
Good
10,493 reviews
Air Canada
7.1
Good
10,493 reviews
Check prices

Boarding

7.3

Entertainment

6.8

Crew

7.8

Food

6.3

Comfort

7.1

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍

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 6h 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.

  • What are the cheapest airlines to fly from London, Ontario to Illinois one-way?

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as C$ 332. Users have also found prices from C$ 367 and C$ 972 on United Airlines and WestJet, respectively.

  • 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, April is the cheapest month in which you can book a flight from London, Ontario to Illinois (average of C$ 117). Flying from London, Ontario to Illinois in February is currently the most expensive (average of C$ 265). 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?

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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