Find flights
When to book
Airlines
FAQs

Cheap flights from London, ON to Illinois from C$ 357

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 27/11. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ORD
13 nov. — 20 nov.1
1 adult
1 adult, Economy

Find 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 14 octubre 2025.

lun. 24/119:25 a.m.YXU - ORD
1 stop4h 36mAir Canada
sáb. 29/112:00 p.m.ORD - YXU
1 stop6h 21mAir Canada
Deal found 14/10C$ 687
sáb. 8/119:25 a.m.YXU - ORD
1 stop4h 36mAir Canada
dom. 23/113:55 p.m.ORD - YXU
1 stop4h 26mAir Canada
Deal found 13/10C$ 712
jue. 27/115:15 a.m.YXU - ORD
1 stop4h 58mUnited Airlines
jue. 4/123:55 p.m.ORD - YXU
1 stop4h 26mUnited Airlines
Deal found 13/10C$ 759
sáb. 8/115:40 p.m.YXU - ORD
2 stops19h 08mMultiple Airlines
dom. 23/117:20 a.m.ORD - YXU
2 stops8h 45mMultiple Airlines
Deal found 13/10C$ 822
dom. 2/115:15 a.m.YXU - ORD
1 stop4h 58mUnited Airlines
mié. 5/1111:15 a.m.ORD - YXU
1 stop4h 50mUnited Airlines
Deal found 14/10C$ 997
jue. 16/106:00 a.m.YXU - MDW
3 stops32h 08mWestJet
lun. 20/107:10 p.m.MDW - YXU
3 stops33h 02mWestJet
Deal found 12/10C$ 2,235
dom. 2/118:10 p.m.YXU - MDW
2 stops22h 33mWestJet
mié. 5/111:48 p.m.MDW - YXU
2 stops28h 24mWestJet
Deal found 14/10C$ 2,751

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 14 octubre 2025.

Round-trip from

C$ 684

One-way from

C$ 357
Air Canada
  • Air Canada
  • 26/12-3/1
  • 2 total stops
  • 13h 06m total
  • London to Illinois
Search Deals
27/11
  • 27/11
  • 3 total stops
  • 24h 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 14 octubre 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

lun. 24/11

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

1 stop4h 36m

Chicago O'Hare Intl

sáb. 29/11

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

1 stop6h 21m

C$ 687

LondonChicago

YXU - ORD

YXUORD

London

sáb. 8/11

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

1 stop4h 36m

Chicago O'Hare Intl

dom. 23/11

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

1 stop4h 26m

C$ 712

LondonChicago

YXU - ORD

YXUORD

London

jue. 27/11

5:15 a.m.-9:13 a.m.

1 stop4h 58m

Chicago O'Hare Intl

jue. 4/12

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

1 stop4h 26m

C$ 759

LondonChicago

YXU - ORD

YXUORD

London

sáb. 8/11

5:40 p.m.-11:48 a.m.

2 stops19h 08m

Chicago O'Hare Intl

dom. 23/11

7:20 a.m.-5:05 p.m.

2 stops8h 45m

C$ 822

LondonChicago

YXU - ORD

YXUORD

London

dom. 2/11

5:15 a.m.-9:13 a.m.

1 stop4h 58m

Chicago O'Hare Intl

mié. 5/11

8:50 a.m.-5:05 p.m.

2 stops7h 15m

C$ 997

LondonChicago

YXU - MDW

YXUMDW

London

dom. 2/11

8:10 p.m.-5:43 p.m.

2 stops22h 33m

Chicago Midway

mié. 5/11

1:48 p.m.-7:12 p.m.

2 stops28h 24m

C$ 2,751

LondonChicago

YXU - ORD

YXUORD

London

jue. 27/11

8:10 p.m.-7:40 p.m.

3 stops24h 30m

C$ 357

LondonChicago

YXU - ORD

YXUORD

London

jue. 27/11

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

1 stop6h 45m

C$ 371

LondonChicago

YXU - ORD

YXUORD

London

jue. 27/11

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

1 stop18h 25m

C$ 398

LondonChicago

YXU - ORD

YXUORD

London

sáb. 8/11

5:15 a.m.-11:18 a.m.

2 stops7h 03m

C$ 399

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/10

Showing 1-10 of 14 results
1
2

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$ 118). Flying from London, Ontario to Illinois in January is currently the most expensive (average of C$ 322). 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 14 octubre 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
10,296 reviews
Check prices

Comfort

7.1

Food

6.3

Boarding

7.3

Crew

7.8

Entertainment

6.8

Overall

7.1

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
10,296 reviews
Air Canada
7.1
Good
10,296 reviews
Check prices

Comfort

7.1

Food

6.3

Boarding

7.3

Crew

7.8

Entertainment

6.8

Overall

7.1

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, April is the cheapest month in which you can book a flight from London, Ontario to Illinois (average of C$ 118). Flying from London, Ontario to Illinois in January is currently the most expensive (average of C$ 322). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to John F Kennedy Intl flights
Pearson Intl to LaGuardia flights
Pierre Elliott Trudeau Intl to Fort Lauderdale flights
Pearson Intl to Newark flights
Toronto Island to Newark flights
Pearson Intl to Fort Lauderdale flights
Pearson Intl to Las Vegas flights
Pierre Elliott Trudeau Intl to John F Kennedy Intl flights
Pierre Elliott Trudeau Intl to LaGuardia flights
Pierre Elliott Trudeau Intl to Miami flights
Pearson Intl to Los Angeles flights
Pearson Intl to Miami flights
Pearson Intl to Orlando flights
Pierre Elliott Trudeau Intl to Newark flights
Pearson Intl to Dallas/Fort Worth flights
Pearson Intl to O'Hare Intl flights
Pearson Intl to San Francisco flights
Toronto Island to Fort Lauderdale flights
Pearson Intl to Hobby flights
Pearson Intl to Seattle flights
Pierre Elliott Trudeau Intl to Las Vegas flights
Pearson Intl to Tampa flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Pearson Intl to George Bush Intcntl flights
Pearson Intl to West Palm Beach flights
Pearson Intl to Boston flights
Pierre Elliott Trudeau Intl to Orlando flights
Pearson Intl to Reagan-National flights
Pearson Intl to Sky Harbor Intl flights
Pearson Intl to Dulles Intl flights
Toronto Island to Orlando flights
Toronto Island to Miami flights
Ottawa to Fort Lauderdale flights
Pearson Intl to Fort Myers flights
Pearson Intl to Honolulu flights
Pearson Intl to Atlanta flights
Pearson Intl to San Diego flights
Pearson Intl to Nashville flights
Pierre Elliott Trudeau Intl to Boston flights
Hamilton to Fort Lauderdale flights
Pierre Elliott Trudeau Intl to San Francisco flights
Pierre Elliott Trudeau Intl to Dallas/Fort Worth flights
Toronto Island to Dulles Intl flights
Pierre Elliott Trudeau Intl to O'Hare Intl flights
Toronto Island to Midway flights
Pierre Elliott Trudeau Intl to West Palm Beach flights
Pierre Elliott Trudeau Intl to Honolulu flights
Ottawa to Orlando flights
Pierre Elliott Trudeau Intl to Tampa flights
Pearson Intl to Minneapolis flights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.