What is the cheapest airline that flies from Illinois to London?

Air Canada and United Airlines are the most popular carriers operating from Illinois to London

When did momondo last update prices for flights from Illinois to London Airport?

Prices for flights from Illinois to London Airport are refreshed on a daily basis.

How old do you have to be to fly from Illinois to London Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to London Airport.

What documentation or ID do you need to fly to London Airport?

The required travel and health documents for your London Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

C$ 419 Cheap Flights from Illinois to London, Ontario in 2026

Find the cheapest flights from Illinois to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:41 p.m. - 5:20 a.m.

ORD

YXU

37h 39m

2 stops

8:40 p.m. - 4:40 p.m.

YXU

ORD

21h 00m

1 stop

C$ 741Multiple Airlines

Tue, 25 Aug - Thu, 3 Sep

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

ORD

YXU

10h 50m

1 stop

8:40 p.m. - 4:40 p.m.

YXU

ORD

21h 00m

1 stop

C$ 792WestJet

Tue, 25 Aug - Thu, 3 Sep

8:55 a.m. - 2:52 p.m.

STL

YXU

4h 57m

1 stop

10:05 a.m. - 6:42 p.m.

YXU

STL

9h 37m

2 stops

C$ 900Air Canada

Sun, 5 Jul - Thu, 9 Jul

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

ORD

YXU

10h 50m

1 stop

8:40 p.m. - 8:52 p.m.

YXU

ORD

25h 12m

2 stops

C$ 910Multiple Airlines

Fri, 10 Jul - Thu, 16 Jul

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

ORD

YXU

10h 50m

1 stop

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

YXU

ORD

11h 30m

1 stop

C$ 914WestJet

Wed, 5 Aug - Wed, 12 Aug

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

ORD

YXU

10h 50m

1 stop

8:40 p.m. - 8:52 p.m.

YXU

ORD

25h 12m

2 stops

C$ 927Multiple Airlines

Wed, 29 Jul - Fri, 31 Jul

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

ORD

YXU

10h 50m

1 stop

5:55 p.m. - 8:52 p.m.

YXU

ORD

27h 57m

2 stops

C$ 939Multiple Airlines

Sat, 11 Jul - Sat, 18 Jul

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

ORD

YXU

10h 50m

1 stop

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

YXU

ORD

11h 30m

1 stop

C$ 944WestJet

Sat, 11 Jul - Wed, 15 Jul

9:20 a.m. - 8:32 p.m.

STL

YXU

10h 12m

2 stops

10:05 a.m. - 6:42 p.m.

YXU

STL

9h 37m

2 stops

C$ 1,034Air Canada

Sun, 5 Jul - Thu, 9 Jul

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

STL

YXU

6h 00m

1 stop

3:30 p.m. - 8:00 p.m.

YXU

STL

5h 30m

1 stop

C$ 1,051Air Canada

Tue, 6 Oct - Wed, 7 Oct

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WestJet flights from Illinois to London, Ontario

Our best WestJet deals on Illinois to London, Ontario flight tickets

WestJet

25 Aug

ORD5:30 p.m.Chicago O'Hare Intl

10h 50m

1 stop

YXU5:20 a.m.London

3 Sep

YXU8:40 p.m.London

21h 00m

1 stop

ORD4:40 p.m.Chicago O'Hare Intl

C$ 792

WestJet

5 Aug

ORD5:30 p.m.Chicago O'Hare Intl

10h 50m

1 stop

YXU5:20 a.m.London

12 Aug

YXU6:10 a.m.London

11h 30m

1 stop

ORD4:40 p.m.Chicago O'Hare Intl

C$ 914

WestJet

11 Jul

ORD5:30 p.m.Chicago O'Hare Intl

10h 50m

1 stop

YXU5:20 a.m.London

15 Jul

YXU6:10 a.m.London

11h 30m

1 stop

ORD4:40 p.m.Chicago O'Hare Intl

C$ 944

United Airlines flights from Illinois to London, Ontario

Our best United Airlines deals on Illinois to London, Ontario flight tickets

United Airlines

6 Sep

ORD10:50 a.m.Chicago O'Hare Intl

9h 50m

2 stops

YXU9:40 p.m.London

14 Sep

YXU3:30 p.m.London

9h 58m

2 stops

ORD12:28 a.m.Chicago O'Hare Intl

C$ 1,145

United Airlines

5 Aug

ORD10:43 a.m.Chicago O'Hare Intl

5h 59m

1 stop

YXU5:42 p.m.London

12 Aug

YXU5:40 a.m.London

5h 13m

1 stop

ORD9:53 a.m.Chicago O'Hare Intl

C$ 1,156

United Airlines

5 Aug

ORD11:07 a.m.Chicago O'Hare Intl

9h 33m

2 stops

YXU9:40 p.m.London

12 Aug

YXU6:20 p.m.London

4h 45m

1 stop

ORD10:05 p.m.Chicago O'Hare Intl

C$ 1,170

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 25/8

2:41 p.m.-5:20 a.m.

2 stops37h 39m

London

Thu 3/9

8:40 p.m.-4:40 p.m.

1 stop21h 00m

C$ 741

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 25/8

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

1 stop10h 50m

London

Thu 3/9

8:40 p.m.-4:40 p.m.

1 stop21h 00m

C$ 792

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Sun 5/7

8:55 a.m.-2:52 p.m.

1 stop4h 57m

London

Thu 9/7

10:05 a.m.-6:42 p.m.

2 stops9h 37m

C$ 900

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 10/7

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

1 stop10h 50m

London

Thu 16/7

8:40 p.m.-8:52 p.m.

2 stops25h 12m

C$ 910

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 5/8

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

1 stop10h 50m

London

Wed 12/8

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

1 stop11h 30m

C$ 914

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 29/7

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

1 stop10h 50m

London

Fri 31/7

8:40 p.m.-8:52 p.m.

2 stops25h 12m

C$ 927

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 11/7

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

1 stop10h 50m

London

Sat 18/7

5:55 p.m.-8:52 p.m.

2 stops27h 57m

C$ 939

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 11/7

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

1 stop10h 50m

London

Wed 15/7

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

1 stop11h 30m

C$ 944

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Sun 5/7

9:20 a.m.-8:32 p.m.

2 stops10h 12m

London

Thu 9/7

10:05 a.m.-6:42 p.m.

2 stops9h 37m

C$ 1,034

Quickest round-trip

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Tue 6/10

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

1 stop6h 00m

London

Wed 7/10

3:30 p.m.-8:00 p.m.

1 stop5h 30m

C$ 1,051

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to London, Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Illinois to London, Ontario flights?

You could potentially save up to 59% on your flight if you consider stops on a Illinois to London, Ontario flight.

Cheap Illinois to London, Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to London, Ontario

Fastest flight time	4h 02m
Direct flights	None

The fastest flight from Illinois to London, Ontario takes 4h 02m

There are no direct flights from Illinois to London, Ontario. There are no popular flight routes from Illinois to London, Ontario.

Search flight deals

Frequently asked questions about flying from Illinois to London, Ontario

When did momondo last update prices for flights from Illinois to London Airport?
Prices for flights from Illinois to London Airport are refreshed on a daily basis.
How old do you have to be to fly from Illinois to London Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to London Airport.
What documentation or ID do you need to fly to London Airport?
The required travel and health documents for your London Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Grand Bend

Port Stanley

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Why should I use momondo to find a flight deal from Illinois to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to London. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to London with flexible booking policies on momondo?

Flights from Illinois to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Illinois to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to London.

I’m not ready to book a flight from Illinois to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.