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Cheap flights from St. Louis to London from C$ 359

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to London departing on 28/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to London

Cheap round-trip flights

 Logo
9:50 a.m. - 5:14 a.m.STL-YXU
18h 24m3 stops
 Logo
6:00 a.m. - 12:10 p.m.YXU-STL
31h 10m3 stops
C$ 887
Find Deal
Thu, 31 Jul - Thu, 7 Aug
Air Canada Logo
9:15 a.m. - 3:02 p.m.STL-YXU
4h 47m1 stop
Air Canada Logo
9:55 a.m. - 3:21 p.m.YXU-STL
6h 26m1 stop
C$ 1,013Air Canada
Find Deal
Thu, 31 Jul - Thu, 7 Aug
Air Canada Logo
9:15 a.m. - 3:02 p.m.STL-YXU
4h 47m1 stop
Air Canada Logo
9:55 a.m. - 8:00 p.m.YXU-STL
11h 05m2 stops
C$ 1,020Air Canada
Find Deal
Thu, 31 Jul - Thu, 7 Aug
Air Canada Logo
4:00 p.m. - 9:27 p.m.STL-YXU
4h 27m1 stop
Air Canada Logo
3:40 p.m. - 7:45 p.m.YXU-STL
5h 05m1 stop
C$ 1,125Air Canada
Find Deal
Sat, 2 Aug - Sat, 9 Aug
 Logo
10:47 a.m. - 9:00 p.m.STL-YXU
33h 13m2 stops
 Logo
6:00 a.m. - 4:45 p.m.YXU-STL
35h 45m3 stops
C$ 1,127
Find Deal
Thu, 31 Jul - Thu, 7 Aug
Air Canada Logo
4:00 p.m. - 9:27 p.m.STL-YXU
4h 27m1 stop
Air Canada Logo
9:55 a.m. - 8:00 p.m.YXU-STL
11h 05m2 stops
C$ 1,131Air Canada
Find Deal
Sat, 2 Aug - Sat, 9 Aug
United Airlines Logo
9:15 a.m. - 3:02 p.m.STL-YXU
4h 47m1 stop
United Airlines Logo
6:15 a.m. - 2:37 p.m.YXU-STL
9h 22m2 stops
C$ 1,142United Airlines
Find Deal
Thu, 31 Jul - Thu, 7 Aug
United Airlines Logo
4:45 p.m. - 9:27 p.m.STL-YXU
27h 42m2 stops
United Airlines Logo
6:15 a.m. - 3:47 p.m.YXU-STL
10h 32m2 stops
C$ 1,172United Airlines
Find Deal
Thu, 31 Jul - Thu, 7 Aug
United Airlines Logo
9:15 a.m. - 3:02 p.m.STL-YXU
4h 47m1 stop
United Airlines Logo
9:55 a.m. - 3:21 p.m.YXU-STL
6h 26m1 stop
C$ 1,174United Airlines
Find Deal
Thu, 31 Jul - Thu, 7 Aug
United Airlines Logo
7:55 a.m. - 9:27 p.m.STL-YXU
12h 32m2 stops
United Airlines Logo
6:15 a.m. - 2:37 p.m.YXU-STL
9h 22m2 stops
C$ 1,252United Airlines
Find Deal
Sat, 2 Aug - Sat, 9 Aug

Air Canada flights from St. Louis to London, Ontario

Our best Air Canada deals on St. Louis to London, Ontario flight tickets
Air Canada
31 Jul
STL9:15 a.m.Lambert-St Louis
4h 47m
1 stop
YXU3:02 p.m.London
7 Aug
YXU9:55 a.m.London
6h 26m
1 stop
STL3:21 p.m.Lambert-St Louis
C$ 1,013
Find similar
Air Canada
31 Jul
STL9:15 a.m.Lambert-St Louis
4h 47m
1 stop
YXU3:02 p.m.London
7 Aug
YXU9:55 a.m.London
11h 05m
2 stops
STL8:00 p.m.Lambert-St Louis
C$ 1,020
Find similar
Air Canada
2 Aug
STL4:00 p.m.Lambert-St Louis
4h 27m
1 stop
YXU9:27 p.m.London
9 Aug
YXU3:40 p.m.London
5h 05m
1 stop
STL7:45 p.m.Lambert-St Louis
C$ 1,125
Find similar

United Airlines flights from St. Louis to London, Ontario

Our best United Airlines deals on St. Louis to London, Ontario flight tickets
United Airlines
31 Jul
STL9:15 a.m.Lambert-St Louis
4h 47m
1 stop
YXU3:02 p.m.London
7 Aug
YXU6:15 a.m.London
9h 22m
2 stops
STL2:37 p.m.Lambert-St Louis
C$ 1,142
Find similar
United Airlines
31 Jul
STL4:45 p.m.Lambert-St Louis
27h 42m
2 stops
YXU9:27 p.m.London
7 Aug
YXU6:15 a.m.London
10h 32m
2 stops
STL3:47 p.m.Lambert-St Louis
C$ 1,172
Find similar
United Airlines
31 Jul
STL9:15 a.m.Lambert-St Louis
4h 47m
1 stop
YXU3:02 p.m.London
7 Aug
YXU9:55 a.m.London
6h 26m
1 stop
STL3:21 p.m.Lambert-St Louis
C$ 1,174
Find similar

See travel insights to London from

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 and United Airlines are the most popular carriers 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$ 359

Fastest flight time

4h 27m

Direct flights

None

Airports in London, Ontario

1 airport
The best one-way flight to London, Ontario from St. Louis in the past 72 hours is C$ 359. The best round-trip flight deal from St. Louis to London, Ontario found on momondo in the last 72 hours is C$ 887.
The fastest flight from St. Louis to London, Ontario takes 4h 27m
There are no direct flights from St. Louis to London, Ontario. Popular non-direct route for this connection is Lambert-St Louis Airport - London Airport.
There is 1 airport near London, Ontario: London (YXU)

  • 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 4h 27m.

  • 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.


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 St. Louis to London?

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

Can I find flights from St. Louis to London with flexible booking policies on momondo?

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

How can momondo help me find flights from St. Louis to London?

Once all potential St. Louis to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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.


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