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Cheap flights from St. Louis to London from $404

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 7/29. 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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0 bags

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Find the cheapest flights from St. Louis to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:10 pm - 11:50 pm
STL
-
STN
29h 40m
3 stops
Multiple Airlines Logo
7:50 pm - 8:07 pm
STN
-
STL
30h 17m
3 stops
$971Multiple Airlines
Tue, Jul 28 - Mon, Aug 10
Multiple Airlines Logo
2:40 pm - 9:30 pm
STL
-
STN
24h 50m
2 stops
Multiple Airlines Logo
7:45 am - 8:07 pm
STN
-
STL
18h 22m
2 stops
$972Multiple Airlines
Wed, Jul 29 - Wed, Aug 5
Multiple Airlines Logo
8:55 am - 7:20 pm
STL
-
STN
28h 25m
3 stops
Multiple Airlines Logo
7:45 am - 8:07 pm
STN
-
STL
18h 22m
2 stops
$974Multiple Airlines
Wed, Jul 29 - Wed, Aug 5
Multiple Airlines Logo
3:30 pm - 11:50 pm
STL
-
STN
26h 20m
2 stops
Multiple Airlines Logo
7:50 pm - 8:07 pm
STN
-
STL
30h 17m
3 stops
$980Multiple Airlines
Tue, Jul 28 - Mon, Aug 10
Multiple Airlines Logo
12:10 pm - 10:50 pm
STL
-
STN
28h 40m
3 stops
Multiple Airlines Logo
6:40 pm - 6:42 pm
STN
-
STL
30h 02m
3 stops
$989Multiple Airlines
Sun, Aug 23 - Wed, Sep 2
Multiple Airlines Logo
2:15 pm - 9:55 pm
STL
-
STN
25h 40m
2 stops
Multiple Airlines Logo
10:00 pm - 8:25 pm
STN
-
STL
28h 25m
3 stops
$1,019Multiple Airlines
Sun, Jun 7 - Wed, Jun 17
Multiple Airlines Logo
2:40 pm - 9:20 pm
STL
-
STN
24h 40m
2 stops
Multiple Airlines Logo
6:35 am - 2:02 pm
STN
-
STL
13h 27m
2 stops
$1,032Multiple Airlines
Sun, Aug 23 - Sun, Aug 30
Multiple Airlines Logo
12:10 pm - 7:20 pm
STL
-
STN
25h 10m
2 stops
Multiple Airlines Logo
10:45 pm - 6:42 pm
STN
-
STL
25h 57m
2 stops
$1,035Multiple Airlines
Fri, Aug 28 - Mon, Aug 31
Multiple Airlines Logo
3:30 pm - 12:35 am
STL
-
STN
27h 05m
2 stops
Multiple Airlines Logo
8:45 pm - 8:07 pm
STN
-
STL
29h 22m
3 stops
$1,039Multiple Airlines
Mon, Aug 3 - Sun, Aug 9
Multiple Airlines Logo
12:10 pm - 12:50 pm
STL
-
STN
18h 40m
3 stops
Multiple Airlines Logo
10:45 pm - 2:02 pm
STN
-
STL
21h 17m
2 stops
$1,065Multiple Airlines
Fri, Aug 28 - Mon, Aug 31

Turkish Airlines flights from St. Louis to London Stansted Airport

Our best Turkish Airlines deals on St. Louis to London Stansted Airport flight tickets
Turkish Airlines
Aug 10
STL5:33 pmLambert-St Louis
41h 17m
2 stops
STN4:50 pmLondon Stansted
Sep 2
STN6:55 amLondon Stansted
45h 05m
2 stops
STL10:00 pmLambert-St Louis
$1,220
Turkish Airlines
Aug 8
STL5:33 pmLambert-St Louis
34h 22m
2 stops
STN9:55 amLondon Stansted
Sep 5
STN10:50 amLondon Stansted
41h 10m
2 stops
STL10:00 pmLambert-St Louis
$1,233
Turkish Airlines
Aug 10
STL5:33 pmLambert-St Louis
34h 22m
2 stops
STN9:55 amLondon Stansted
Sep 5
STN5:45 pmLondon Stansted
34h 15m
2 stops
STL10:00 pmLambert-St Louis
$1,239

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to London Stansted Airport 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 May 17, 2026.
Use the filters below to find and compare flights from St. Louis to London Stansted Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Tue 7/28

12:10 pm-11:50 pm

3 stops29h 40m

London Stansted

Mon 8/10

7:50 pm-8:07 pm

3 stops30h 17m

$971

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Wed 7/29

2:40 pm-9:30 pm

2 stops24h 50m

London Stansted

Wed 8/5

7:45 am-8:07 pm

2 stops18h 22m

$972

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Wed 7/29

8:55 am-7:20 pm

3 stops28h 25m

London Stansted

Wed 8/5

7:45 am-8:07 pm

2 stops18h 22m

$974

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Tue 7/28

3:30 pm-11:50 pm

2 stops26h 20m

London Stansted

Mon 8/10

7:50 pm-8:07 pm

3 stops30h 17m

$980

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Sun 8/23

12:10 pm-10:50 pm

3 stops28h 40m

London Stansted

Wed 9/2

6:40 pm-6:42 pm

3 stops30h 02m

$989

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Sun 6/7

2:15 pm-9:55 pm

2 stops25h 40m

London Stansted

Wed 6/17

10:00 pm-8:25 pm

3 stops28h 25m

$1,019
Quickest round-trip

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Sun 8/23

2:40 pm-9:20 pm

2 stops24h 40m

London Stansted

Sun 8/30

6:35 am-2:02 pm

2 stops13h 27m

$1,032

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Fri 8/28

12:10 pm-7:20 pm

2 stops25h 10m

London Stansted

Mon 8/31

10:45 pm-6:42 pm

2 stops25h 57m

$1,035

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Mon 8/3

3:30 pm-12:35 am

2 stops27h 05m

London Stansted

Sun 8/9

8:45 pm-8:07 pm

3 stops29h 22m

$1,039

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Fri 8/28

12:10 pm-12:50 pm

3 stops18h 40m

London Stansted

Mon 8/31

10:45 pm-2:02 pm

2 stops21h 17m

$1,065

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 St. Louis to London Stansted Airport

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 Stansted?

Turkish Airlines is the most popular carrier operating from Lambert-St Louis to London Stansted

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

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

Cheap St. Louis to London Stansted Airport (STL to STN) flight deals and tips

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

Fastest flight time

18h 40m

Direct flights

None
The fastest flight from St. Louis to London Stansted Airport takes 18h 40m
There are no direct flights from St. Louis to London Stansted Airport. There are no popular flight routes from St. Louis to London Stansted Airport.
Search flight deals

Frequently asked questions about flying from St. Louis to London Stansted Airport

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

    There are 4199.6 mi between Lambert-St Louis and London Stansted. By plane, this route typically takes 18h 40m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to London Stansted Airport.

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

    The travel and health documents you'll need for your trip to London Stansted 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 Stansted 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
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Crawley
Wembley
Slough
Croydon
Stansted
Watford
Harrow
Brentwood
Dartford
Cobham
Folkestone
Romford
Uxbridge
Guildford

Why use momondo?

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

Finding the right flight to London from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to London from St. Louis with this policy.

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

momondo helps you find the best flight between St. Louis and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to London from St. Louis. 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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