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Cheap flights from Illinois to London from C$ 315

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to London departing on 15/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Illinois to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:05 a.m. - 6:34 a.m.
ORD
-
YXU
23h 29m3 stops
Multiple Airlines Logo
8:10 p.m. - 9:03 p.m.
YXU
-
ORD
25h 53m3 stops
C$ 693Multiple Airlines
Wed, 28 Jan - Wed, 4 Feb
Multiple Airlines Logo
5:15 a.m. - 6:34 a.m.
ORD
-
YXU
24h 19m3 stops
Multiple Airlines Logo
8:10 p.m. - 9:03 p.m.
YXU
-
ORD
25h 53m3 stops
C$ 822Multiple Airlines
Tue, 27 Jan - Tue, 3 Feb
Multiple Airlines Logo
10:00 a.m. - 5:05 p.m.
ORD
-
YXU
6h 05m1 stop
Multiple Airlines Logo
5:40 p.m. - 10:05 p.m.
YXU
-
ORD
5h 25m1 stop
C$ 854Multiple Airlines
Tue, 27 Jan - Tue, 3 Feb
Air Canada Logo
3:55 p.m. - 9:21 p.m.
ORD
-
YXU
4h 26m1 stop
Air Canada Logo
9:50 a.m. - 3:10 p.m.
YXU
-
ORD
6h 20m1 stop
C$ 856Air Canada
Thu, 22 Jan - Mon, 26 Jan
Multiple Airlines Logo
11:15 a.m. - 5:05 p.m.
ORD
-
YXU
4h 50m1 stop
Multiple Airlines Logo
5:10 a.m. - 11:06 a.m.
YXU
-
ORD
6h 56m2 stops
C$ 866Multiple Airlines
Tue, 10 Feb - Fri, 20 Feb
Air Canada Logo
3:55 p.m. - 9:21 p.m.
ORD
-
YXU
4h 26m1 stop
Air Canada Logo
5:10 a.m. - 2:55 p.m.
YXU
-
ORD
10h 45m2 stops
C$ 869Air Canada
Thu, 22 Jan - Mon, 26 Jan
Air Canada Logo
7:15 a.m. - 5:05 p.m.
ORD
-
YXU
8h 50m2 stops
Air Canada Logo
5:10 a.m. - 11:06 a.m.
YXU
-
ORD
6h 56m2 stops
C$ 880Air Canada
Thu, 22 Jan - Mon, 26 Jan
United Airlines Logo
12:59 p.m. - 9:18 p.m.
ORD
-
YXU
7h 19m2 stops
United Airlines Logo
5:40 p.m. - 10:03 p.m.
YXU
-
ORD
5h 23m1 stop
C$ 973United Airlines
Wed, 1 Apr - Sat, 4 Apr
United Airlines Logo
7:10 a.m. - 5:05 p.m.
ORD
-
YXU
8h 55m2 stops
United Airlines Logo
9:50 a.m. - 6:37 p.m.
YXU
-
ORD
9h 47m2 stops
C$ 994United Airlines
Tue, 27 Jan - Tue, 3 Feb
United Airlines Logo
8:05 a.m. - 9:21 p.m.
STL
-
YXU
12h 16m2 stops
United Airlines Logo
9:25 a.m. - 10:58 p.m.
YXU
-
STL
14h 33m2 stops
C$ 1,271United Airlines
Tue, 27 Jan - Tue, 3 Feb

United Airlines flights from Illinois to London, Ontario

Our best United Airlines deals on Illinois to London, Ontario flight tickets
United Airlines
1 Apr
ORD12:59 p.m.Chicago O'Hare Intl
7h 19m
2 stops
YXU9:18 p.m.London
4 Apr
YXU5:40 p.m.London
5h 23m
1 stop
ORD10:03 p.m.Chicago O'Hare Intl
C$ 973
Find similar
United Airlines
27 Jan
ORD7:10 a.m.Chicago O'Hare Intl
8h 55m
2 stops
YXU5:05 p.m.London
3 Feb
YXU9:50 a.m.London
9h 47m
2 stops
ORD6:37 p.m.Chicago O'Hare Intl
C$ 994
Find similar
United Airlines
29 Dec
ORD1:24 p.m.Chicago O'Hare Intl
6h 57m
2 stops
YXU9:21 p.m.London
3 Jan
YXU5:10 a.m.London
5h 03m
1 stop
ORD9:13 a.m.Chicago O'Hare Intl
C$ 1,159
Find similar

Air Canada flights from Illinois to London, Ontario

Our best Air Canada deals on Illinois to London, Ontario flight tickets
Air Canada
22 Jan
ORD3:55 p.m.Chicago O'Hare Intl
4h 26m
1 stop
YXU9:21 p.m.London
26 Jan
YXU9:50 a.m.London
6h 20m
1 stop
ORD3:10 p.m.Chicago O'Hare Intl
C$ 856
Find similar
Air Canada
22 Jan
ORD3:55 p.m.Chicago O'Hare Intl
4h 26m
1 stop
YXU9:21 p.m.London
26 Jan
YXU5:10 a.m.London
10h 45m
2 stops
ORD2:55 p.m.Chicago O'Hare Intl
C$ 869
Find similar
Air Canada
22 Jan
ORD7:15 a.m.Chicago O'Hare Intl
8h 50m
2 stops
YXU5:05 p.m.London
26 Jan
YXU5:10 a.m.London
6h 56m
2 stops
ORD11:06 a.m.Chicago O'Hare Intl
C$ 880
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to London, Ontario 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, momondo users made 96,600 searches. Data last updated 15 December 2025.
Use the filters below to find and compare flights from Illinois to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 28/1

6:05 a.m.-6:34 a.m.

3 stops23h 29m

London

Wed 4/2

8:10 p.m.-9:03 p.m.

3 stops25h 53m

C$ 693

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 27/1

5:15 a.m.-6:34 a.m.

3 stops24h 19m

London

Tue 3/2

8:10 p.m.-9:03 p.m.

3 stops25h 53m

C$ 822

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 27/1

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

1 stop6h 05m

London

Tue 3/2

5:40 p.m.-10:05 p.m.

1 stop5h 25m

C$ 854

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 22/1

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

1 stop4h 26m

London

Mon 26/1

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

1 stop6h 20m

C$ 856

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 10/2

11:15 a.m.-5:05 p.m.

1 stop4h 50m

London

Fri 20/2

5:10 a.m.-11:06 a.m.

2 stops6h 56m

C$ 866

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 22/1

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

1 stop4h 26m

London

Mon 26/1

5:10 a.m.-2:55 p.m.

2 stops10h 45m

C$ 869

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 22/1

7:15 a.m.-5:05 p.m.

2 stops8h 50m

London

Mon 26/1

5:10 a.m.-11:06 a.m.

2 stops6h 56m

C$ 880

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 1/4

12:59 p.m.-9:18 p.m.

2 stops7h 19m

London

Sat 4/4

5:40 p.m.-10:03 p.m.

1 stop5h 23m

C$ 973

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 27/1

7:10 a.m.-5:05 p.m.

2 stops8h 55m

London

Tue 3/2

9:50 a.m.-6:37 p.m.

2 stops9h 47m

C$ 994

St. LouisLondon

STL - YXU

STLYXU

Lambert-St Louis

Tue 27/1

8:05 a.m.-9:21 p.m.

2 stops12h 16m

London

Tue 3/2

9:25 a.m.-10:58 p.m.

2 stops14h 33m

C$ 1,271

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to London from

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

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 03m

Direct flights

None
The fastest flight from Illinois to London, Ontario takes 4h 03m
There are no direct flights from Illinois to London, Ontario. There are no popular flight routes from Illinois to London, Ontario.
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  • 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.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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.

An easier way to manage your London, Ontario trip

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