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Cheap flights from Illinois to London from $292

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 5/6. 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
1 adult, Economy, 0 bags

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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.
WestJet Logo
5:30 pm - 5:20 am
ORD
-
YXU
10h 50m
1 stop
WestJet Logo
6:10 am - 4:40 pm
YXU
-
ORD
11h 30m
1 stop
$606WestJet
Sat, May 23 - Tue, May 26
WestJet Logo
5:30 pm - 5:20 am
ORD
-
YXU
10h 50m
1 stop
WestJet Logo
6:10 am - 4:40 pm
YXU
-
ORD
11h 30m
1 stop
$608WestJet
Mon, May 11 - Sun, May 24
WestJet Logo
5:30 pm - 5:20 am
ORD
-
YXU
10h 50m
1 stop
WestJet Logo
5:55 pm - 4:40 pm
YXU
-
ORD
23h 45m
1 stop
$620WestJet
Mon, May 25 - Thu, May 28
WestJet Logo
5:30 pm - 5:20 am
ORD
-
YXU
10h 50m
1 stop
WestJet Logo
5:55 pm - 4:40 pm
YXU
-
ORD
23h 45m
1 stop
$622WestJet
Mon, May 25 - Thu, May 28
Air Canada Logo
3:50 pm - 9:38 pm
ORD
-
YXU
4h 48m
1 stop
Air Canada Logo
9:30 am - 2:55 pm
YXU
-
ORD
6h 25m
1 stop
$639Air Canada
Sat, May 23 - Tue, May 26
Air Canada Logo
3:50 pm - 9:38 pm
ORD
-
YXU
4h 48m
1 stop
Air Canada Logo
12:20 pm - 8:08 pm
YXU
-
ORD
8h 48m
2 stops
$648Air Canada
Sat, May 23 - Tue, May 26
Multiple Airlines Logo
8:56 pm - 5:20 am
ORD
-
YXU
31h 24m
2 stops
Multiple Airlines Logo
6:10 am - 4:40 pm
YXU
-
ORD
11h 30m
1 stop
$670Multiple Airlines
Mon, May 11 - Sun, May 24
Air Canada Logo
2:00 pm - 9:19 pm
ORD
-
YXU
6h 19m
1 stop
Air Canada Logo
5:10 am - 9:10 am
YXU
-
ORD
5h 00m
1 stop
$672Air Canada
Tue, Apr 21 - Tue, Apr 28
Air Canada Logo
9:55 am - 2:58 pm
ORD
-
YXU
4h 03m
1 stop
Air Canada Logo
5:10 am - 2:50 pm
YXU
-
ORD
10h 40m
2 stops
$680Air Canada
Thu, Jun 4 - Sun, Jun 7
Air Canada Logo
8:45 am - 9:38 pm
ORD
-
YXU
11h 53m
2 stops
Air Canada Logo
12:20 pm - 8:08 pm
YXU
-
ORD
8h 48m
2 stops
$719Air Canada
Sat, May 23 - Tue, May 26

United Airlines flights from Illinois to London, Ontario

Our best United Airlines deals on Illinois to London, Ontario flight tickets
United Airlines
May 7
ORD2:15 pmChicago O'Hare Intl
6h 23m
1 stop
YXU9:38 pmLondon
May 14
YXU5:10 amLondon
5h 40m
1 stop
ORD9:50 amChicago O'Hare Intl
$725
United Airlines
May 4
ORD12:55 pmChicago O'Hare Intl
7h 43m
2 stops
YXU9:38 pmLondon
May 11
YXU5:40 amLondon
4h 25m
1 stop
ORD9:05 amChicago O'Hare Intl
$735
United Airlines
May 4
ORD8:45 amChicago O'Hare Intl
7h 48m
2 stops
YXU5:33 pmLondon
May 11
YXU12:20 pmLondon
10h 22m
2 stops
ORD9:42 pmChicago O'Hare Intl
$751

WestJet flights from Illinois to London, Ontario

Our best WestJet deals on Illinois to London, Ontario flight tickets
WestJet
May 25
ORD5:30 pmChicago O'Hare Intl
10h 50m
1 stop
YXU5:20 amLondon
May 28
YXU5:55 pmLondon
23h 45m
1 stop
ORD4:40 pmChicago O'Hare Intl
$567
WestJet
May 23
ORD5:30 pmChicago O'Hare Intl
10h 50m
1 stop
YXU5:20 amLondon
May 26
YXU6:10 amLondon
11h 30m
1 stop
ORD4:40 pmChicago O'Hare Intl
$606
WestJet
May 11
ORD5:30 pmChicago O'Hare Intl
10h 50m
1 stop
YXU5:20 amLondon
May 24
YXU6:10 amLondon
11h 30m
1 stop
ORD4:40 pmChicago O'Hare Intl
$608

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 832,500 searches. Data last updated March 24, 2026.
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

Cheapest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 5/23

5:30 pm-5:20 am

1 stop10h 50m

London

Tue 5/26

6:10 am-4:40 pm

1 stop11h 30m

$606

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 5/11

5:30 pm-5:20 am

1 stop10h 50m

London

Sun 5/24

6:10 am-4:40 pm

1 stop11h 30m

$608

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 5/25

5:30 pm-5:20 am

1 stop10h 50m

London

Thu 5/28

5:55 pm-4:40 pm

1 stop23h 45m

$620

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 5/25

5:30 pm-5:20 am

1 stop10h 50m

London

Thu 5/28

5:55 pm-4:40 pm

1 stop23h 45m

$622
Quickest round-trip

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 5/23

3:50 pm-9:38 pm

1 stop4h 48m

London

Tue 5/26

9:30 am-2:55 pm

1 stop6h 25m

$639

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 5/23

3:50 pm-9:38 pm

1 stop4h 48m

London

Tue 5/26

12:20 pm-8:08 pm

2 stops8h 48m

$648

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 5/11

8:56 pm-5:20 am

2 stops31h 24m

London

Sun 5/24

6:10 am-4:40 pm

1 stop11h 30m

$670

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 4/21

2:00 pm-9:19 pm

1 stop6h 19m

London

Tue 4/28

5:10 am-9:10 am

1 stop5h 00m

$672

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 6/4

9:55 am-2:58 pm

1 stop4h 03m

London

Sun 6/7

5:10 am-2:50 pm

2 stops10h 40m

$680

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 5/23

8:45 am-9:38 pm

2 stops11h 53m

London

Tue 5/26

12:20 pm-8:08 pm

2 stops8h 48m

$719

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 51% 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.
Search flight deals

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

    Prices for flights from Illinois to London Airport refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 travel and health documents you'll need for your trip to London Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling 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?

It is quick and easy to find Illinois to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

All flight searches from Illinois to London on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to London from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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.

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