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Cheap flights from London Heathrow Airport to St. Louis from $541

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to St. Louis departing on 1/13. 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 London Heathrow Airport to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from London Heathrow Airport to St. Louis 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 London Heathrow Airport to St. Louis.

Cheap last minute flights

Planning a quick getaway from London Heathrow Airport to St. Louis? 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 St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from London Heathrow Airport to St. Louis

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

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
12:35 pm - 10:28 pmLHR-STL
15h 53m1 stop
2:15 pm - 9:15 amSTL-LHR
13h 00m1 stop
$753Finnair
Find Deal
Mon, Jan 13 - Tue, Jan 21
1:00 pm - 11:31 pmLHR-STL
16h 31m1 stop
8:22 am - 8:10 pmSTL-LHR
29h 48m2 stops
Thu, Jan 16 - Sun, Jan 19
6:30 am - 8:49 pmLHR-STL
20h 19m2 stops
5:57 pm - 1:45 pmSTL-LHR
13h 48m2 stops
$965Delta
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Wed, Dec 4 - Wed, Dec 11
11:45 am - 8:49 pmLHR-STL
15h 04m2 stops
6:00 am - 6:20 amSTL-LHR
18h 20m1 stop
$966Delta
Find Deal
Wed, Dec 4 - Wed, Dec 11
3:00 pm - 12:16 pmLHR-STL
27h 16m2 stops
12:00 pm - 6:55 amSTL-LHR
12h 55m1 stop
$1,014United Airlines
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Wed, Jan 22 - Thu, Feb 20
6:30 am - 1:55 pmLHR-STL
13h 25m1 stop
1:10 pm - 8:25 amSTL-LHR
13h 15m2 stops
$1,027United Airlines
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Wed, Dec 4 - Wed, Dec 11
11:55 am - 10:09 pmLHR-STL
16h 14m1 stop
2:57 pm - 10:20 amSTL-LHR
13h 23m1 stop
$1,069British Airways
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Sun, Jan 12 - Thu, May 8
12:30 pm - 5:37 pmLHR-STL
35h 07m1 stop
5:54 pm - 9:25 amSTL-LHR
33h 31m1 stop
$1,151British Airways
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Thu, May 1 - Sat, May 3
12:35 pm - 11:51 pmLHR-STL
17h 16m1 stop
2:00 pm - 9:20 amSTL-LHR
13h 20m1 stop
$1,448American Airlines
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Sun, Jan 5 - Sun, Jan 12
12:35 pm - 11:51 pmLHR-STL
17h 16m1 stop
6:23 pm - 12:45 pmSTL-LHR
12h 22m1 stop
$1,524American Airlines
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Sun, Jan 5 - Sun, Jun 1
2:50 pm - 11:27 pmLHR-STL
38h 37m3 stops
Mon, Jan 13
2:50 pm - 9:22 amLHR-STL
24h 32m2 stops
$560WestJet
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Thu, Dec 12
7:50 am - 9:53 pmLHR-STL
20h 03m2 stops
$793Aer Lingus
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Tue, Dec 17
2:10 pm - 10:09 pmLHR-STL
13h 59m1 stop
$851Iberia
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Mon, Jan 13
12:15 pm - 6:04 pmLHR-STL
11h 49m1 stop
$853Iberia
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Sun, Apr 13
12:35 pm - 10:48 pmLHR-STL
16h 13m1 stop
$863Finnair
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Tue, Dec 31
12:35 pm - 11:51 pmLHR-STL
17h 16m1 stop
$941Finnair
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Mon, Dec 30
6:45 pm - 10:13 pmLHR-STL
33h 28m2 stops
$1,312Aer Lingus
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Sat, Dec 14
3:45 pm - 10:28 pmLHR-STL
12h 43m1 stop
$1,594British Airways
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Sun, Jan 5
1:50 pm - 10:33 pmLHR-STL
14h 43m1 stop
$2,815British Airways
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Thu, Dec 12
6:40 am - 11:41 pmLHR-STL
23h 01m2 stops
10:14 am - 4:00 pmSTL-LHR
23h 46m2 stops
$1,299Scandinavian Airlines
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Sat, Nov 23 - Fri, Nov 29
10:25 am - 12:10 pmLHR-STL
31h 45m3 stops
1:00 pm - 5:20 pmSTL-LHR
22h 20m3 stops
$1,372
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Sun, Nov 24 - Tue, Nov 26
6:00 am - 11:30 amLHR-STL
35h 30m3 stops
6:30 am - 12:50 pmSTL-LHR
24h 20m2 stops
$1,428
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Sun, Nov 24 - Tue, Nov 26
6:30 am - 4:33 pmLHR-STL
16h 03m2 stops
6:00 am - 7:55 amSTL-LHR
19h 55m1 stop
$1,460Delta
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Sat, Nov 23 - Fri, Nov 29
10:00 am - 11:28 pmLHR-STL
19h 28m1 stop
12:00 pm - 6:20 amSTL-LHR
12h 20m1 stop
$1,532
Find Deal
Sat, Nov 23 - Fri, Nov 29
10:00 am - 11:28 pmLHR-STL
19h 28m1 stop
1:05 pm - 11:15 amSTL-LHR
16h 10m1 stop
$1,535Austrian Airlines
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Sat, Nov 23 - Fri, Nov 29
7:50 am - 10:10 pmLHR-STL
20h 20m2 stops
5:19 pm - 8:05 amSTL-LHR
32h 46m2 stops
$1,642Aer Lingus
Find Deal
Sun, Nov 24 - Tue, Nov 26
12:25 pm - 12:06 amLHR-STL
17h 41m1 stop
10:17 pm - 12:50 pmSTL-LHR
32h 33m2 stops
$1,864
Find Deal
Sun, Nov 24 - Tue, Nov 26
2:10 pm - 8:15 pmLHR-STL
12h 05m1 stop
5:19 pm - 6:50 amSTL-LHR
31h 31m1 stop
$2,527British Airways
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Sun, Nov 24 - Tue, Nov 26
9:10 am - 6:15 pmLHR-STL
15h 05m1 stop
11:50 am - 6:55 amSTL-LHR
13h 05m2 stops
$8,341Virgin Atlantic
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Sun, Nov 24 - Thu, Nov 28

Air Canada flights from London Heathrow Airport to St. Louis

Our best Air Canada deals on London Heathrow Airport to St. Louis flight tickets
Air Canada
Jan 6
LHR6:00 pmLondon Heathrow
27h 06m
1 stop
STL3:06 pmLambert-St Louis
Jan 12
STL3:50 pmLambert-St Louis
32h 40m
1 stop
LHR6:30 amLondon Heathrow
Air Canada
Jan 5
LHR3:00 pmLondon Heathrow
30h 06m
2 stops
STL3:06 pmLambert-St Louis
Jan 12
STL3:50 pmLambert-St Louis
32h 40m
1 stop
LHR6:30 amLondon Heathrow
Air Canada
Jan 5
LHR3:00 pmLondon Heathrow
30h 06m
2 stops
STL3:06 pmLambert-St Louis
Jun 5
STL1:30 pmLambert-St Louis
14h 30m
1 stop
LHR10:00 amLondon Heathrow

Delta flights from London Heathrow Airport to St. Louis

Our best Delta deals on London Heathrow Airport to St. Louis flight tickets
Delta
Dec 4
LHR6:30 amLondon Heathrow
20h 19m
2 stops
STL8:49 pmLambert-St Louis
Dec 11
STL5:57 pmLambert-St Louis
13h 48m
2 stops
LHR1:45 pmLondon Heathrow
Delta
Dec 4
LHR11:45 amLondon Heathrow
15h 04m
2 stops
STL8:49 pmLambert-St Louis
Dec 11
STL6:00 amLambert-St Louis
18h 20m
1 stop
LHR6:20 amLondon Heathrow
Delta
Jan 29
LHR6:30 amLondon Heathrow
20h 26m
2 stops
STL8:56 pmLambert-St Louis
Feb 28
STL5:50 pmLambert-St Louis
13h 55m
2 stops
LHR1:45 pmLondon Heathrow

See travel insights to St. Louis from

How to get the cheapest flight ticket from London Heathrow Airport to St. Louis

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 month to fly to St. Louis?

In general, January is the cheapest month to fly from London Heathrow Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $724. The month of March is another great option to travel to St. Louis, with average flight prices from London Heathrow Airport averaging around $726.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $944. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,371. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from London Heathrow Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $0 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $1,179 per ticket.

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from London Heathrow Airport is 19 days out, which is when prices tend to be around $866. In the past 72 hours, momondo users found flights from London Heathrow Airport to St. Louis for as low as $673.

Can stopping save me money on London Heathrow Airport to St. Louis flights?

You could potentially save up to 33% on your flight if you consider stops on a London Heathrow Airport to St. Louis flight.

How have London Heathrow Airport to St. Louis flight prices changed over time?

As of November 2024, prices for London Heathrow Airport to St. Louis flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to St. Louis (LHR to STL) flight deals and tips

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

Best Price Found

$541

Fastest flight time

11h 49m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from London Heathrow Airport in the past 72 hours is $541. The best round-trip flight deal from London Heathrow Airport to St. Louis found on momondo in the last 72 hours is $753.
The fastest flight from London Heathrow Airport to St. Louis takes 11h 49m
There are no direct flights from London Heathrow Airport to St. Louis. Popular non-direct route for this connection is London Heathrow Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is London Heathrow to Lambert-St Louis by plane?

    The straight-line distance from London Heathrow to Lambert-St Louis is 4185.8 mi. By plane, this route typically takes 11h 53m.

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

    Prices for flights from London Heathrow Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London Heathrow Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from London Heathrow Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis 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.

  • What is the most popular airline from London Heathrow Airport to St. Louis?


Best airlines flying from London Heathrow Airport to St. Louis

Compare and see reviews for airlines that fly from London Heathrow Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $278Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $583Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
British AirwaysPriceFrom $961Free CancellationRating
6.6
6,831 reviews
Search British Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from London to St. Louis?

It is quick and easy to find London to St. Louis 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 St. Louis that suits you.

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

momondo does allow users to show only those flights to St. Louis from London which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from London.

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

Yes momondo offers price alerts on flights to St. Louis from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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