How long is the flight from London, Ontario to Illinois?

There are many flights that can get you from London, Ontario to Illinois in 5h 50m. Fly via WestJet or Air Canada 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.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What is the cheapest time of day to fly from YXU to IL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London, Ontario to Illinois as you normally would.

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.

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.

C$ 352+ Cheap Flights from London, ON to Illinois

Cheap flight deals from London to Illinois

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 20 August 2026.

Thu 15/106:10 a.m. -

1 stop11h 30m

Sun 18/105:30 p.m. -

1 stop10h 50m

Deal found 19/8C$ 548

Mon 14/95:55 p.m. -

1 stop23h 45m

Mon 21/95:30 p.m. -

1 stop10h 50m

Deal found 17/8C$ 579

Sun 13/95:55 p.m. -

2 stops31h 28m

Sun 20/95:30 p.m. -

1 stop10h 50m

Deal found 16/8C$ 683

Mon 14/95:55 p.m. -

2 stops25h 28m

Mon 21/95:30 p.m. -

1 stop10h 50m

Deal found 17/8C$ 742

Thu 8/1010:05 a.m. -

1 stop5h 50m

Mon 12/109:55 a.m. -

1 stop3h 55m

Deal found 17/8C$ 795

Thu 10/95:40 a.m. -

2 stops7h 20m

Mon 14/95:00 a.m. -

2 stops8h 50m

Deal found 16/8C$ 799

Fri 18/96:10 a.m. -

2 stops30h 38m

Fri 25/95:30 p.m. -

1 stop10h 50m

Deal found 19/8C$ 806

Thu 15/105:55 p.m. -

2 stops37h 39m

Sun 18/105:30 p.m. -

1 stop10h 50m

Deal found 19/8C$ 817

Fri 18/95:40 a.m. -

1 stop4h 20m

Fri 25/92:20 p.m. -

1 stop6h 20m

Deal found 19/8C$ 899

Sat 3/106:10 a.m. -

3 stops33h 25m

Sat 10/1011:45 a.m. -

3 stops16h 35m

Deal found 18/8C$ 1,122

Mon 14/95:55 p.m. -

3 stops21h 40m

Mon 21/911:45 a.m. -

3 stops16h 35m

Deal found 17/8C$ 1,138

Fri 18/96:10 a.m. -

3 stops29h 50m

Fri 25/911:45 a.m. -

3 stops16h 35m

Deal found 19/8C$ 1,181

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 20 August 2026.

Thu 15/106:10 a.m. -

1 stop11h 30m

Sun 18/105:30 p.m. -

1 stop10h 50m

Deal found 19/8C$ 548

Sun 13/95:55 p.m. -

2 stops31h 28m

Sun 20/95:30 p.m. -

1 stop10h 50m

Deal found 16/8C$ 683

Thu 8/1010:05 a.m. -

1 stop5h 50m

Mon 12/109:55 a.m. -

1 stop3h 55m

Deal found 17/8C$ 795

Thu 10/95:40 a.m. -

1 stop4h 20m

Mon 14/95:00 a.m. -

2 stops8h 50m

Deal found 16/8C$ 799

Fri 18/96:10 a.m. -

2 stops30h 38m

Fri 25/95:30 p.m. -

1 stop10h 50m

Deal found 19/8C$ 806

Fri 18/95:40 a.m. -

1 stop4h 20m

Fri 25/92:20 p.m. -

1 stop6h 20m

Deal found 19/8C$ 899

Mon 14/95:55 p.m. -

1 stop23h 45m

Mon 21/911:47 a.m. -

3 stops16h 33m

Deal found 17/8C$ 909

Thu 15/105:40 a.m. -

2 stops10h 12m

Sun 18/108:45 a.m. -

2 stops7h 58m

Deal found 19/8C$ 940

Sat 3/106:10 a.m. -

3 stops33h 25m

Sat 10/1011:45 a.m. -

3 stops16h 35m

Deal found 18/8C$ 1,122

Mon 14/95:55 p.m. -

3 stops21h 40m

Mon 21/911:45 a.m. -

3 stops16h 35m

Deal found 17/8C$ 1,138

Fri 18/96:10 a.m. -

3 stops29h 50m

Fri 25/911:45 a.m. -

3 stops16h 35m

Deal found 19/8C$ 1,181

Fri 18/96:10 a.m. -

2 stops13h 23m

Fri 25/912:39 p.m. -

2 stops15h 41m

Deal found 19/8C$ 1,982

Mon 14/96:10 a.m. -

2 stops13h 23m

Mon 21/91:00 p.m. -

2 stops15h 20m

Deal found 17/8C$ 2,392

Thu 10/96:10 a.m. -

2 stops27h 57m

Mon 14/92:00 p.m. -

2 stops14h 20m

Deal found 16/8C$ 2,476

Wed 9/96:10 a.m. -

2 stops27h 57m

Sun 13/910:48 a.m. -

2 stops17h 32m

Deal found 18/8C$ 2,533

Sat 3/106:10 a.m. -

2 stops27h 57m

Sat 10/101:27 p.m. -

2 stops14h 53m

Deal found 18/8C$ 2,633

Sun 13/95:55 p.m. -

2 stops16h 54m

Sun 20/92:00 p.m. -

2 stops14h 20m

Deal found 16/8C$ 3,487

Find flight deals from London to Illinois

Round-trip from	C$ 548
One-way from	C$ 352

WestJet
15/10-18/10
2 total stops
22h 20m total
London to Illinois

Search Deals

30/9
3 total stops
24h 28m total
London to Illinois

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Thu 15/10

6:10 a.m.-4:40 p.m.

1 stop11h 30m

Chicago O'Hare Intl

Sun 18/10

5:30 p.m.-5:20 a.m.

1 stop10h 50m

C$ 548

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Sun 13/9

5:55 p.m.-12:23 a.m.

2 stops31h 28m

Chicago O'Hare Intl

Sun 20/9

5:30 p.m.-5:20 a.m.

1 stop10h 50m

C$ 683

Quickest round-trip

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Thu 8/10

10:05 a.m.-2:55 p.m.

1 stop5h 50m

Chicago O'Hare Intl

Mon 12/10

9:55 a.m.-2:50 p.m.

1 stop3h 55m

C$ 795

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Thu 10/9

5:40 a.m.-9:00 a.m.

1 stop4h 20m

Chicago O'Hare Intl

Mon 14/9

5:00 a.m.-2:50 p.m.

2 stops8h 50m

C$ 799

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Fri 18/9

6:10 a.m.-11:48 a.m.

2 stops30h 38m

Chicago O'Hare Intl

Fri 25/9

5:30 p.m.-5:20 a.m.

1 stop10h 50m

C$ 806

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Fri 18/9

5:40 a.m.-9:00 a.m.

1 stop4h 20m

Chicago O'Hare Intl

Fri 25/9

2:20 p.m.-9:40 p.m.

1 stop6h 20m

C$ 899

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Mon 14/9

5:55 p.m.-4:40 p.m.

1 stop23h 45m

Chicago O'Hare Intl

Mon 21/9

11:47 a.m.-5:20 a.m.

3 stops16h 33m

C$ 909

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Thu 15/10

5:40 a.m.-2:52 p.m.

2 stops10h 12m

Chicago O'Hare Intl

Sun 18/10

8:45 a.m.-5:43 p.m.

2 stops7h 58m

C$ 940

LondonChicago

YXU London - MDW Chicago Midway

YXUMDW

London

Sat 3/10

6:10 a.m.-2:35 p.m.

3 stops33h 25m

Chicago Midway

Sat 10/10

11:45 a.m.-5:20 a.m.

3 stops16h 35m

C$ 1,122

LondonChicago

YXU London - MDW Chicago Midway

YXUMDW

London

Mon 14/9

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

3 stops21h 40m

Chicago Midway

Mon 21/9

11:45 a.m.-5:20 a.m.

3 stops16h 35m

C$ 1,138

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/8

Showing 1-10 of 30 resultsSorted by cheapest first

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.

YXU-ORD

YXU-MDW

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

YXU-USIL

YXU-ORD

YXU-MDW

No data available for this route at this time. Please check back soon.

Related info for your journey

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 5h 50m. Fly via WestJet or Air Canada 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

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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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Cheap flights from London, ON to Illinois from C$ 352

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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Illinois

Cheapest flights from London to IllinoisExplore 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 20 August 2026.

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 20 August 2026.

Best flights from London to IllinoisDiscover 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 20 August 2026.

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 20 August 2026.

Last-minute flights from London to IllinoisDiscover last-minute flight deals from London to Illinois. Data last updated 20 August 2026 and is based on user searches.

Discover last-minute flight deals from London to Illinois. Data last updated 20 August 2026 and is based on user searches.

One-way flights from London to IllinoisSearch for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.

Search for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.

Find flight deals from London to Illinois

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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.

Cheapflights Insights

Related info for your journey

What airport do you fly from for flights from London to Illinois?

How long is the flight from London, Ontario to Illinois?

Can I find deals for flights from London to Illinois that include hotel bookings?

How can I find direct flights from London to Illinois?

Can I find deals for business class flights from London to Illinois?

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.

Complete your trip

Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to United States

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Search flights from London to Illinois by cabin class

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London and Illinois flights

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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 20 August 2026.

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 20 August 2026.

Last-minute flights from London to Illinois
Discover last-minute flight deals from London to Illinois. Data last updated 20 August 2026 and is based on user searches.

One-way flights from London to Illinois
Search for one-way flight options from London to Illinois. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.