When did momondo last update prices for flights from Lambert-St Louis Airport to London Airport?

Prices for flights from Lambert-St Louis Airport to London Airport are updated daily.

How old do you have to be to fly from Lambert-St Louis Airport 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 Lambert-St Louis Airport to London Airport.

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

The necessary travel and health documents for your London Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 542 Cheap Flights from St. Louis to London, Ontario in 2026/27

Find the cheapest flights from St. Louis to London

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:54 p.m. - 5:00 p.m.STL Lambert-St Louis-YXU London

20h 06m2 stops Denver Intl Orlando

10:00 a.m. - 12:12 a.m.YXU London-STL Lambert-St Louis

15h 12m1 stop Orlando

C$ 663Multiple Airlines

Wed, 9 Dec - Sat, 12 Dec

6:20 p.m. - 5:00 p.m.STL Lambert-St Louis-YXU London

21h 40m1 stop Orlando

10:00 a.m. - 12:12 a.m.YXU London-STL Lambert-St Louis

15h 12m1 stop Orlando

C$ 695Multiple Airlines

Wed, 9 Dec - Sat, 12 Dec

12:02 p.m. - 5:00 p.m.STL Lambert-St Louis-YXU London

27h 58m3 stops Atlanta Hartsfield-Jackson San Juan Luis Munoz Marin Intl Orlando

10:00 a.m. - 12:12 a.m.YXU London-STL Lambert-St Louis

15h 12m1 stop Orlando

C$ 704Multiple Airlines

Wed, 9 Dec - Sat, 12 Dec

7:54 p.m. - 5:00 p.m.STL Lambert-St Louis-YXU London

20h 06m2 stops Denver Intl Orlando

10:00 a.m. - 1:32 p.m.YXU London-STL Lambert-St Louis

28h 32m3 stops Orlando Dallas/Fort Worth Las Vegas Harry Reid Intl

C$ 796Multiple Airlines

Wed, 9 Dec - Sat, 12 Dec

12:02 p.m. - 5:00 p.m.STL Lambert-St Louis-YXU London

27h 58m3 stops Atlanta Hartsfield-Jackson San Juan Luis Munoz Marin Intl Orlando

10:00 a.m. - 1:32 p.m.YXU London-STL Lambert-St Louis

28h 32m3 stops Orlando Dallas/Fort Worth Las Vegas Harry Reid Intl

C$ 820Multiple Airlines

Wed, 9 Dec - Sat, 12 Dec

8:30 a.m. - 8:27 p.m.STL Lambert-St Louis-YXU London

10h 57m2 stops Chicago O'Hare Intl Toronto Pearson Intl

3:25 p.m. - 8:53 a.m.YXU London-STL Lambert-St Louis

18h 28m2 stops Toronto Pearson Intl Newark

C$ 1,675United Airlines

Thu, 12 Nov - Mon, 16 Nov

7:05 p.m. - 8:27 p.m.STL Lambert-St Louis-YXU London

24h 22m2 stops San Francisco Toronto Pearson Intl

3:25 p.m. - 8:53 a.m.YXU London-STL Lambert-St Louis

18h 28m2 stops Toronto Pearson Intl Newark

C$ 1,822United Airlines

Thu, 12 Nov - Mon, 16 Nov

10:53 a.m. - 2:42 p.m.STL Lambert-St Louis-YXU London

26h 49m2 stops Chicago O'Hare Intl Toronto Pearson Intl

3:25 p.m. - 11:24 p.m.YXU London-STL Lambert-St Louis

8h 59m2 stops Toronto Pearson Intl Chicago O'Hare Intl

C$ 2,007United Airlines

Thu, 12 Nov - Mon, 16 Nov

8:30 a.m. - 8:27 p.m.STL Lambert-St Louis-YXU London

10h 57m2 stops Chicago O'Hare Intl Toronto Pearson Intl

3:25 p.m. - 8:53 a.m.YXU London-STL Lambert-St Louis

18h 28m2 stops Toronto Pearson Intl Newark

C$ 2,060United Airlines

Thu, 12 Nov - Mon, 16 Nov

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United Airlines flights from St. Louis to London, Ontario

Our best United Airlines deals on St. Louis to London, Ontario flight tickets

United Airlines

12 Nov

STL8:30 a.m.Lambert-St Louis

10h 57m

2 stops

YXU8:27 p.m.London

16 Nov

YXU3:25 p.m.London

18h 28m

2 stops

STL8:53 a.m.Lambert-St Louis

C$ 1,675

United Airlines

12 Nov

STL7:05 p.m.Lambert-St Louis

24h 22m

2 stops

YXU8:27 p.m.London

16 Nov

YXU3:25 p.m.London

18h 28m

2 stops

STL8:53 a.m.Lambert-St Louis

C$ 1,822

United Airlines

12 Nov

STL10:53 a.m.Lambert-St Louis

26h 49m

2 stops

YXU2:42 p.m.London

16 Nov

YXU3:25 p.m.London

8h 59m

2 stops

STL11:24 p.m.Lambert-St Louis

C$ 2,007

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Wed 9/12

7:54 p.m.-5:00 p.m.

2 stops20h 06m

London

Sat 12/12

10:00 a.m.-12:12 a.m.

1 stop15h 12m

C$ 663

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Wed 9/12

6:20 p.m.-5:00 p.m.

1 stop21h 40m

London

Sat 12/12

10:00 a.m.-12:12 a.m.

1 stop15h 12m

C$ 695

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Wed 9/12

12:02 p.m.-5:00 p.m.

3 stops27h 58m

London

Sat 12/12

10:00 a.m.-12:12 a.m.

1 stop15h 12m

C$ 704

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Wed 9/12

7:54 p.m.-5:00 p.m.

2 stops20h 06m

London

Sat 12/12

10:00 a.m.-1:32 p.m.

3 stops28h 32m

C$ 796

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Wed 9/12

12:02 p.m.-5:00 p.m.

3 stops27h 58m

London

Sat 12/12

10:00 a.m.-1:32 p.m.

3 stops28h 32m

C$ 820

Quickest round-trip

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Thu 12/11

8:30 a.m.-8:27 p.m.

2 stops10h 57m

London

Mon 16/11

3:25 p.m.-8:53 a.m.

2 stops18h 28m

C$ 1,675

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Thu 12/11

7:05 p.m.-8:27 p.m.

2 stops24h 22m

London

Mon 16/11

3:25 p.m.-8:53 a.m.

2 stops18h 28m

C$ 1,822

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Thu 12/11

10:53 a.m.-2:42 p.m.

2 stops26h 49m

London

Mon 16/11

3:25 p.m.-11:24 p.m.

2 stops8h 59m

C$ 2,007

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Thu 12/11

8:30 a.m.-8:27 p.m.

2 stops10h 57m

London

Mon 16/11

3:25 p.m.-8:53 a.m.

2 stops18h 28m

C$ 2,060

Cheapest one-way

St. LouisLondon

STL Lambert-St Louis - YXU London

STLYXU

Lambert-St Louis

Sat 26/12

9:50 a.m.-1:45 p.m.

3 stops50h 55m

C$ 542

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis 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

What is the cheapest airline that flies from Lambert-St Louis to London?

Air Canada is the most popular carrier operating from Lambert-St Louis to London

When to book flights from St. Louis to London, Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to London, Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to London, Ontario (STL to YXU) flight deals and tips

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

Best price found	C$ 542
Fastest flight time	10h 57m
Direct flights	None

The best one-way flight to London, Ontario from St. Louis in the past 72 hours is C$ 542. The best round-trip flight deal from St. Louis to London, Ontario found on momondo in the last 72 hours is C$ 663.

The fastest flight from St. Louis to London, Ontario takes 10h 57m

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

Search flight deals

Frequently asked questions about flying from St. Louis to London, Ontario

How far is Lambert-St Louis to London by plane?
London is 895.2 km away from Lambert-St Louis. In terms of flight time, this usually takes a little over 10h 57m.
When did momondo last update prices for flights from Lambert-St Louis Airport to London Airport?
Prices for flights from Lambert-St Louis Airport to London Airport are updated daily.
How old do you have to be to fly from Lambert-St Louis Airport 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 Lambert-St Louis Airport to London Airport.
What documentation or ID do you need to fly to London Airport?
The necessary travel and health documents for your London Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from St. Louis and alert you when they change.