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$ 401 Cheap Flights from Illinois to London in 2026

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

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

ORD

YXU

10h 50m

1 stop

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

YXU

ORD

23h 45m

1 stop

C$ 778WestJet

Mon, 25 May - Thu, 28 May

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$ 832WestJet

Sat, 23 May - Tue, 26 May

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$ 834WestJet

Mon, 11 May - Sun, 24 May

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

ORD

YXU

10h 50m

1 stop

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

YXU

ORD

23h 45m

1 stop

C$ 851WestJet

Mon, 25 May - Thu, 28 May

2:15 p.m. - 9:38 p.m.

STL

YXU

6h 23m

1 stop

5:10 a.m. - 12:06 p.m.

YXU

STL

7h 56m

1 stop

C$ 862Air Canada

Fri, 8 May - Fri, 15 May

1:05 p.m. - 9:38 p.m.

STL

YXU

7h 33m

2 stops

12:20 p.m. - 8:25 p.m.

YXU

STL

9h 05m

2 stops

C$ 870Air Canada

Fri, 8 May - Fri, 15 May

1:05 p.m. - 9:38 p.m.

STL

YXU

7h 33m

2 stops

5:10 a.m. - 12:06 p.m.

YXU

STL

7h 56m

1 stop

C$ 873Air Canada

Fri, 8 May - Fri, 15 May

9:55 a.m. - 2:58 p.m.

ORD

YXU

4h 03m

1 stop

3:30 p.m. - 7:25 p.m.

YXU

ORD

4h 55m

1 stop

C$ 877Air Canada

Thu, 4 Jun - Sun, 7 Jun

2:15 p.m. - 9:38 p.m.

ORD

YXU

6h 23m

1 stop

12:20 p.m. - 8:08 p.m.

YXU

ORD

8h 48m

2 stops

C$ 889Air Canada

Sat, 23 May - Tue, 26 May

8:56 p.m. - 5:20 a.m.

ORD

YXU

31h 24m

2 stops

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

YXU

ORD

11h 30m

1 stop

C$ 919Multiple Airlines

Mon, 11 May - Sun, 24 May

Air Canada flights from Illinois to London, Ontario

Our best Air Canada deals on Illinois to London, Ontario flight tickets

Air Canada

8 May

STL2:15 p.m.Lambert-St Louis

6h 23m

1 stop

YXU9:38 p.m.London

15 May

YXU5:10 a.m.London

7h 56m

1 stop

STL12:06 p.m.Lambert-St Louis

C$ 862

Air Canada

8 May

STL1:05 p.m.Lambert-St Louis

7h 33m

2 stops

YXU9:38 p.m.London

15 May

YXU12:20 p.m.London

9h 05m

2 stops

STL8:25 p.m.Lambert-St Louis

C$ 870

Air Canada

8 May

STL1:05 p.m.Lambert-St Louis

7h 33m

2 stops

YXU9:38 p.m.London

15 May

YXU5:10 a.m.London

7h 56m

1 stop

STL12:06 p.m.Lambert-St Louis

C$ 873

United Airlines flights from Illinois to London, Ontario

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

United Airlines

7 May

ORD2:15 p.m.Chicago O'Hare Intl

6h 23m

1 stop

YXU9:38 p.m.London

14 May

YXU5:10 a.m.London

5h 40m

1 stop

ORD9:50 a.m.Chicago O'Hare Intl

C$ 995

United Airlines

4 May

ORD12:55 p.m.Chicago O'Hare Intl

7h 43m

2 stops

YXU9:38 p.m.London

11 May

YXU5:40 a.m.London

4h 25m

1 stop

ORD9:05 a.m.Chicago O'Hare Intl

C$ 1,009

United Airlines

4 May

ORD8:45 a.m.Chicago O'Hare Intl

7h 48m

2 stops

YXU5:33 p.m.London

11 May

YXU12:20 p.m.London

10h 22m

2 stops

ORD9:42 p.m.Chicago O'Hare Intl

C$ 1,030

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 25/5

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

1 stop10h 50m

London

Thu 28/5

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

1 stop23h 45m

C$ 778

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 23/5

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

1 stop10h 50m

London

Tue 26/5

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

1 stop11h 30m

C$ 832

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 11/5

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

1 stop10h 50m

London

Sun 24/5

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

1 stop11h 30m

C$ 834

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 25/5

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

1 stop10h 50m

London

Thu 28/5

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

1 stop23h 45m

C$ 851

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Fri 8/5

2:15 p.m.-9:38 p.m.

1 stop6h 23m

London

Fri 15/5

5:10 a.m.-12:06 p.m.

1 stop7h 56m

C$ 862

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Fri 8/5

1:05 p.m.-9:38 p.m.

2 stops7h 33m

London

Fri 15/5

12:20 p.m.-8:25 p.m.

2 stops9h 05m

C$ 870

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Fri 8/5

1:05 p.m.-9:38 p.m.

2 stops7h 33m

London

Fri 15/5

5:10 a.m.-12:06 p.m.

1 stop7h 56m

C$ 873

Quickest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 4/6

9:55 a.m.-2:58 p.m.

1 stop4h 03m

London

Sun 7/6

3:30 p.m.-7:25 p.m.

1 stop4h 55m

C$ 877

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 23/5

2:15 p.m.-9:38 p.m.

1 stop6h 23m

London

Tue 26/5

12:20 p.m.-8:08 p.m.

2 stops8h 48m

C$ 889

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 11/5

8:56 p.m.-5:20 a.m.

2 stops31h 24m

London

Sun 24/5

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

1 stop11h 30m

C$ 919

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 04m
Direct flights	None

The fastest flight from Illinois to London, Ontario takes 4h 04m

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

Search flight deals

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

Why use momondo?

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.