How do I get Price Alerts for flights from St. Louis to London, Ontario?

Price Alerts will notify you by email when the price for flights to London, Ontario from St. Louis decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

How can I save money on flights from St. Louis to London, Ontario with momondo?

With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

How does momondo find its flight prices?

momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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$ 1,114 Cheap Flights from St. Louis to London in 2024/25

1 adult

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Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to London that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to London.

Cheap last-minute flights

Planning a quick getaway from St. Louis to London? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to London

Find recent round-trip train or bus tickets from St. Louis to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.

9:44 a.m. - 8:20 p.m.STL-YXU

9h 36m2 stops

9:55 a.m. - 3:06 p.m.YXU-STL

6h 11m1 stop

C$ 1,175United Airlines

Find Deal

Wed, 5 Feb - Wed, 12 Feb

7:00 a.m. - 8:20 p.m.STL-YXU

36h 20m2 stops

5:45 a.m. - 12:16 p.m.YXU-STL

7h 31m2 stops

C$ 1,188United Airlines

Find Deal

Wed, 5 Feb - Wed, 12 Feb

STL-YXU

1461 kmmulti-stop

Multiple Airlines

Find Deal

United Airlines flights from St. Louis to London, Ontario

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

United Airlines

5 Feb

STL9:44 a.m.Lambert-St Louis

9h 36m

2 stops

YXU8:20 p.m.London

12 Feb

YXU9:55 a.m.London

6h 11m

1 stop

STL3:06 p.m.Lambert-St Louis

C$ 1,175

Find similar

United Airlines

5 Feb

STL7:00 a.m.Lambert-St Louis

36h 20m

2 stops

YXU8:20 p.m.London

12 Feb

YXU5:45 a.m.London

7h 31m

2 stops

STL12:16 p.m.Lambert-St Louis

C$ 1,188

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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$ 1,175
Fastest flight time	9h 36m
Direct flights	None
Airports in London, Ontario	1 airport

The best flight deal from St. Louis to London, Ontario found on momondo in the last 72 hours is C$ 1,175

The fastest flight from St. Louis to London, Ontario takes 9h 36m

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)

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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 9h 36m.
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.

How do I get Price Alerts for flights from St. Louis to London, Ontario?
Price Alerts will notify you by email when the price for flights to London, Ontario from St. Louis decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.
How can I save money on flights from St. Louis to London, Ontario with momondo?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
How does momondo find its flight prices?
momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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.