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Cheap flights from London, ON to Illinois from C$ 256

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 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
16 Jan — 23 Jan1
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 17 December 2025.

Fri 26/125:10 a.m.YXU - ORD
1 stop5h 55mUnited Airlines
Tue 30/122:00 p.m.ORD - YXU
1 stop6h 21mUnited Airlines
Deal found 16/12C$ 1,039
Sun 21/129:25 a.m.YXU - ORD
1 stop6h 45mUnited Airlines
Fri 2/110:00 a.m.ORD - YXU
1 stop6h 05mUnited Airlines
Deal found 15/12C$ 1,204

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 17 December 2025.

Round-trip from

C$ 478

One-way from

C$ 256
15/1-21/1
  • 15/1-21/1
  • 3 total stops
  • 57h 41m total
  • London to Illinois
Search Deals
29/1
  • 29/1
  • 2 total stops
  • 45h 41m 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 17 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

Fri 23/1

7:30 a.m.-4:51 p.m.

2 stops34h 21m

Chicago O'Hare Intl

Mon 26/1

2:20 p.m.-6:34 a.m.

1 stop15h 14m

C$ 574

LondonChicago

YXU - ORD

YXUORD

London

Thu 15/1

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

1 stop6h 20m

Chicago O'Hare Intl

Wed 21/1

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

1 stop4h 26m

C$ 645

LondonChicago

YXU - ORD

YXUORD

London

Thu 29/1

8:10 p.m.-1:35 p.m.

1 stop18h 25m

Chicago O'Hare Intl

Thu 5/2

9:00 a.m.-6:35 a.m.

2 stops20h 35m

C$ 647

LondonChicago

YXU - ORD

YXUORD

London

Fri 23/1

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

1 stop5h 03m

Chicago O'Hare Intl

Mon 26/1

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

1 stop6h 05m

C$ 680

LondonChicago

YXU - ORD

YXUORD

London

Sun 12/4

9:25 a.m.-1:00 p.m.

1 stop4h 35m

Chicago O'Hare Intl

Thu 16/4

9:50 a.m.-5:03 p.m.

1 stop6h 13m

C$ 680

LondonChicago

YXU - ORD

YXUORD

London

Thu 29/1

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

1 stop6h 20m

Chicago O'Hare Intl

Thu 5/2

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

1 stop4h 26m

C$ 683

LondonChicago

YXU - MDW

YXUMDW

London

Sun 12/4

8:10 p.m.-6:05 p.m.

2 stops22h 55m

Chicago Midway

Thu 16/4

9:20 a.m.-6:35 a.m.

2 stops20h 15m

C$ 1,922

LondonChicago

YXU - MDW

YXUMDW

London

Thu 29/1

8:10 p.m.-9:53 a.m.

2 stops14h 43m

Chicago Midway

Thu 5/2

10:48 a.m.-6:35 a.m.

2 stops18h 47m

C$ 2,048

LondonChicago

YXU - MDW

YXUMDW

London

Wed 1/4

8:10 p.m.-1:23 p.m.

2 stops18h 13m

Chicago Midway

Sun 5/4

2:03 p.m.-6:35 a.m.

2 stops15h 32m

C$ 2,083

LondonChicago

YXU - ORD

YXUORD

London

Thu 29/1

8:10 p.m.-4:51 p.m.

2 stops45h 41m

C$ 256

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/12

Showing 1-10 of 16 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$ 113). Flying from London, Ontario to Illinois in March is currently the most expensive (average of C$ 261). 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 17 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
10,531 reviews
Check prices

Food

6.3

Entertainment

6.8

Comfort

7.1

Crew

7.8

Overall

7.1

Boarding

7.3

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
10,531 reviews
Air Canada
7.1
Good
10,531 reviews
Check prices

Food

6.3

Entertainment

6.8

Comfort

7.1

Crew

7.8

Overall

7.1

Boarding

7.3

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.

  • 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$ 113). Flying from London, Ontario to Illinois in March is currently the most expensive (average of C$ 261). 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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