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Cheap flights from St. Louis to London from $309

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 7/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Thu 5/2

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Easily compare round-trip flights from St. Louis to London

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to London by changing tabs
Multiple Airlines
May 12
STL10:59 pmLambert-St Louis
53h 01m
2 stops
LGW10:00 amLondon Gatwick
May 22
LGW2:00 pmLondon Gatwick
23h 08m
1 stop
STL7:08 amLambert-St Louis
Virgin Atlantic
Apr 23
STL2:18 pmLambert-St Louis
13h 42m
2 stops
LGW10:00 amLondon Gatwick
Apr 30
LGW12:00 pmLondon Gatwick
15h 23m
2 stops
STL9:23 pmLambert-St Louis
United Airlines
Sep 21
STL5:01 pmLambert-St Louis
32h 39m
1 stop
LHR7:40 amLondon Heathrow
Oct 1
LHR6:00 pmLondon Heathrow
32h 00m
1 stop
STL8:00 pmLambert-St Louis
Air Canada
Sep 25
STL12:00 pmLambert-St Louis
12h 30m
1 stop
LHR6:30 amLondon Heathrow
Oct 1
LHR2:05 pmLondon Heathrow
13h 00m
1 stop
STL9:05 pmLambert-St Louis
Delta
May 1
STL6:13 amLambert-St Louis
18h 32m
2 stops
LHR6:45 amLondon Heathrow
May 8
LHR6:15 amLondon Heathrow
17h 07m
2 stops
STL5:22 pmLambert-St Louis
KLM
Apr 27
STL4:45 pmLambert-St Louis
35h 15m
2 stops
LGW10:00 amLondon Gatwick
May 10
LGW12:00 pmLondon Gatwick
32h 28m
2 stops
STL2:28 pmLambert-St Louis

Find the cheapest one-way flights from St. Louis to London

If you're looking for one-way flights from St. Louis to London, view some of our deals below provided by Delta, Finnair and Iberia
Multiple Airlines
Jul 4
STL8:12 pmLambert-St Louis
31h 48m
1 stop
LGW10:00 amLondon Gatwick
KLM
Apr 23
STL6:04 amLambert-St Louis
21h 56m
2 stops
LGW10:00 amLondon Gatwick
Iberia
Jul 10
STL9:47 amLambert-St Louis
20h 28m
1 stop
LHR12:15 pmLondon Heathrow

Search last-minute flights to London from St. Louis

Find and compare round-trip flight prices for your last-minute flight from St. Louis to London
Multiple Airlines
Apr 27
STL11:39 amLambert-St Louis
16h 21m
1 stop
LGW10:00 amLondon Gatwick
May 10
LGW2:00 pmLondon Gatwick
26h 28m
1 stop
STL10:28 amLambert-St Louis
Virgin Atlantic
Apr 23
STL2:18 pmLambert-St Louis
13h 42m
2 stops
LGW10:00 amLondon Gatwick
Apr 30
LGW12:00 pmLondon Gatwick
15h 23m
2 stops
STL9:23 pmLambert-St Louis
United Airlines
Apr 23
STL3:15 pmLambert-St Louis
14h 30m
1 stop
LHR11:45 amLondon Heathrow
Apr 30
LHR7:25 amLondon Heathrow
15h 49m
2 stops
STL5:14 pmLambert-St Louis
Air Canada
Apr 27
STL5:00 pmLambert-St Louis
31h 30m
2 stops
LHR6:30 amLondon Heathrow
May 10
LHR8:30 amLondon Heathrow
18h 35m
2 stops
STL9:05 pmLambert-St Louis
KLM
Apr 27
STL4:45 pmLambert-St Louis
35h 15m
2 stops
LGW10:00 amLondon Gatwick
May 10
LGW12:00 pmLondon Gatwick
32h 28m
2 stops
STL2:28 pmLambert-St Louis
American Airlines
Apr 30
STL11:07 amLambert-St Louis
15h 03m
2 stops
LGW8:10 amLondon Gatwick
May 5
LGW2:30 pmLondon Gatwick
28h 40m
2 stops
STL1:10 pmLambert-St Louis

Best airlines flying from St. Louis to London

Compare and see reviews for airlines that fly from St. Louis to London with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $603Free CancellationRating
7.4
11,325 reviews
Search United Airlines flights
IberiaPriceFrom $619Free CancellationRating
7.1
2,791 reviews
Search Iberia flights
American AirlinesPriceFrom $635Free CancellationRating
7.3
14,955 reviews
Search American Airlines flights
FinnairPriceFrom $643Free CancellationRating
7.7
1,390 reviews
Search Finnair flights
British AirwaysPriceFrom $653Free CancellationRating
6.8
6,936 reviews
Search British Airways flights
Virgin AtlanticPriceFrom $654Free CancellationRating
7.7
751 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $660Free CancellationRating
8.0
11,094 reviews
Search Delta flights
LufthansaPriceFrom $670Free CancellationRating
7.0
7,794 reviews
Search Lufthansa flights
KLMPriceFrom $688Free CancellationRating
7.8
1,641 reviews
Search KLM flights
Air CanadaPriceFrom $701Free CancellationRating
7.0
6,844 reviews
Search Air Canada flights

Delta flights from St. Louis to London

Our best Delta deals on St. Louis to London flight tickets
Delta
May 1
STL6:13 amLambert-St Louis
18h 32m
2 stops
LHR6:45 amLondon Heathrow
May 8
LHR6:15 amLondon Heathrow
17h 07m
2 stops
STL5:22 pmLambert-St Louis
Delta
Sep 25
STL2:05 pmLambert-St Louis
14h 10m
2 stops
LHR10:15 amLondon Heathrow
Oct 8
LHR8:20 amLondon Heathrow
18h 19m
2 stops
STL8:39 pmLambert-St Louis
Delta
May 8
STL10:20 amLambert-St Louis
14h 55m
1 stop
LHR7:15 amLondon Heathrow
May 22
LHR11:30 amLondon Heathrow
16h 22m
2 stops
STL9:52 pmLambert-St Louis

United Airlines flights from St. Louis to London

Our best United Airlines deals on St. Louis to London flight tickets
United Airlines
Sep 21
STL5:01 pmLambert-St Louis
32h 39m
1 stop
LHR7:40 amLondon Heathrow
Oct 1
LHR6:00 pmLondon Heathrow
32h 00m
1 stop
STL8:00 pmLambert-St Louis
United Airlines
Apr 23
STL3:15 pmLambert-St Louis
14h 30m
1 stop
LHR11:45 amLondon Heathrow
Apr 30
LHR7:25 amLondon Heathrow
15h 49m
2 stops
STL5:14 pmLambert-St Louis
United Airlines
Apr 27
STL5:25 pmLambert-St Louis
30h 30m
1 stop
LHR5:55 amLondon Heathrow
May 10
LHR6:00 pmLondon Heathrow
29h 14m
2 stops
STL5:14 pmLambert-St Louis

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

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 from St. Louis to London?

February. The cheapest time of year to fly to London from St. Louis is February. Most expensive is June

What is the cheapest day to depart St. Louis for London?

Wednesday. The cheapest day of the week is typically Wednesday. The most expensive is typically Saturday

When is the cheapest time to fly from St. Louis to London?

In the afternoon. St. Louis to London flights are approximately 7% more expensive at noon than in the afternoon

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

Iberia. British Airways, Delta, and Finnair are the most popular carriers operating from St. Louis to London

What is the cheapest St. Louis to London flight route?

Lambert-St Louis - London Gatwick. Fly from Lambert-St Louis to London Gatwick for the best St. Louis - London flight prices

How far in advance should you book St. Louis to London flights?

34 days before. The cheapest time to buy a flight from St. Louis to London is approximately 34 days to departure

Cheap St. Louis to London (STL to LON) flight deals and tips

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

Best Price Found

$309

Fastest flight time

10h 05m

Direct flights

None

Airports in London

4 airports
The best one-way flight to London from St. Louis in the past 72 hours is $309. The best round-trip flight deal from St. Louis to London found on momondo in the last 72 hours is $663.
The fastest flight from St. Louis to London takes 10h 05m
There are no direct flights from St. Louis to London. Popular non-direct routes for this connection are Lambert-St Louis Airport - London Luton Airport, Lambert-St Louis Airport - London Gatwick Airport and Lambert-St Louis Airport - London Heathrow Airport.
There are 4 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Gatwick (LGW)

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

    London is 4197.7 mi away from Lambert-St Louis. Flights usually cover this in 10h 05m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Lambert-St Louis Airport to London were last updated today.

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

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

    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.

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

    The travel and health documents you'll need for your trip to London 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.


Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to London for you.

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

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

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

Once you have performed a search for St. Louis to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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 not ready to book a flight from St. Louis to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.


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Find better results for your stay in the United Kingdom

Fly into one of these airports located in London
Airports listed have a maximum distance of 35.6 mi from London