LON - STL

$344 Find Cheap Flights from London to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to St. Louis departing on 6/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to St. Louis, as well as popular online travel agencies
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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$821
Typical prices: $980-$826
Finnair, British Airways
Wed 9/9Wed 9/16
LHR - STL • Non-stop
Cheapest non-stop
$864
British Airways
Fri 5/8Tue 5/19
LHR - STL • Non-stop
Nonstop flights
Tue, Wed, Fri, Sun
You can fly direct with British Airways. Average duration is 9h 05m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $212 (round-trip)
Shortest trip • 3h 35m (one-way)
Insights
Insights
Insights
Insights
Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 37% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 10% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from London to St. Louis (LON-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from London to St. Louis

Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
4:25 pm - 7:30 pm
LHR
-
STL
9h 05mnonstop
Multiple Airlines Logo
3:33 pm - 12:50 pm
STL
-
LHR
15h 17m
1 stop
$821Multiple Airlines
Wed, Sep 2 - Wed, Sep 23
Multiple Airlines Logo
4:25 pm - 7:30 pm
LHR
-
STL
9h 05mnonstop
Multiple Airlines Logo
3:33 pm - 12:50 pm
STL
-
LHR
15h 17m
1 stop
$823Multiple Airlines
Thu, May 7 - Sat, May 23
American Airlines Logo
9:45 am - 4:00 pm
LHR
-
STL
12h 15m
1 stop
American Airlines Logo
12:39 pm - 9:05 am
STL
-
LHR
14h 26m
1 stop
$825American Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
10:05 am - 7:46 pm
LHR
-
STL
15h 41m
1 stop
Multiple Airlines Logo
8:30 am - 6:20 am
STL
-
LHR
15h 50m
1 stop
$827Multiple Airlines
Sat, May 9 - Sun, May 17
Delta Logo
1:25 pm - 11:59 pm
LHR
-
STL
16h 34m
1 stop
Delta Logo
5:20 pm - 11:20 am
STL
-
LHR
12h 00m
1 stop
$829Delta
Tue, May 5 - Fri, May 22
Delta Logo
10:45 am - 4:42 pm
LHR
-
STL
11h 57m
1 stop
Delta Logo
1:59 pm - 7:10 am
STL
-
LHR
11h 11m
1 stop
$834Delta
Wed, Sep 9 - Sun, Sep 13
American Airlines Logo
4:25 pm - 7:30 pm
LHR
-
STL
9h 05mnonstop
American Airlines Logo
6:55 pm - 6:55 pm
STL
-
LHR
18h 00m
1 stop
$836American Airlines
Tue, Apr 28 - Sat, May 9
Air France Logo
10:35 am - 9:19 pm
LGW
-
STL
16h 44m
2 stops
Air France Logo
11:25 am - 4:00 pm
STL
-
LGW
22h 35m
2 stops
$1,020Air France
Sun, May 3 - Sun, May 10
British Airways Logo
8:05 pm - 7:31 pm
LCY
-
STL
29h 26m
2 stops
British Airways Logo
6:54 pm - 9:10 am
STL
-
LCY
32h 16m
2 stops
$1,057British Airways
Thu, Apr 30 - Sun, May 10
British Airways Logo
9:35 am - 6:04 pm
LCY
-
STL
38h 29m
2 stops
British Airways Logo
2:12 pm - 9:10 am
STL
-
LCY
36h 58m
2 stops
$1,088British Airways
Booking Insights

KAYAK's insights & trends for London to St. Louis flights

Get data-powered insights and trends into flights from London to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from London to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from London to St. Louis departing in September.

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

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London to St. Louis costs $834 on the route between London Heathrow Airport (LHR) and St. Louis (STL). It is also the most popular route.

What is the cheapest month to fly from London to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to St. Louis is February, where tickets cost $896 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $1,178 and $1,150 respectively.

Can I save money by flying with a layover from London to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $1,017 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London to St. Louis, you should book around 4 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$394
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from London Gatwick Airport to St. Louis

When to book flights from London to St. Louis

Are your dates flexible? Find out the best times to travel from London to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to St. Louis

  • Are there fast track facilities at London Airports?

    You can speed up your journey through London Airports using the fast track system. At Heathrow Airport (LHR), fast-track passes cost about £12.50, while at Gatwick Airport (LGW), they cost about £5. Both fast-track services help you skip through security, allowing you more time to enjoy the departure lounge.

  • How can I get from St Louis Airport (STL) to the city centre?

    Getting to the city centre from St Louis Airport (STL) is easy, with a few transport options available. The MLR Red Line to Lambert East TRML Metrolink Station is a low-cost choice. The Red Line takes about 29min and has 12 stops. However, if you want to get to the city quicker, you can get a taxi from the front of the terminal, which takes around 19min.

  • Are there hotels at London Airport?

    If your flight is early in the morning, you can ensure you’re not in a rush by getting a hotel the night before. For example, at Heathrow Airport, you can go to the Ibis London Heathrow Airport, whereas at Gatwick Airport, you can go to Hilton London Gatwick Airport. The hotels are only a short walk to the terminal on the morning of your flight.

  • Can I use a currency exchange at St. Louis Airport?

    When you land at St. Louis Airport, you can use the Banking and Foreign Currency Exchange to convert your Pound Sterling to US Dollar. The currency exchange is in Terminal 1 on the lower level close to the Gate C Security checkpoint.

  • What is the cheapest flight from London to St. Louis?

    In the last 3 days, the lowest price for a flight from London to St. Louis was $344 for a one-way ticket and $821 for a round-trip.

  • Do I need a passport to fly between London and St. Louis?

    A passport is required to fly from London to St. Louis.

  • Which airports will I be using when flying from London to St. Louis?

    When flying out of London you will be using one of these airports: London Gatwick or London Heathrow. You will be landing at Lambert-St Louis.

  • Which aircraft models fly most regularly from London to St. Louis?

    The Boeing 787-8 Dreamliner is the aircraft model that flies most regularly on the London to St. Louis flight route.

  • Which airline alliances offer flights from London to St. Louis?

    Star Alliance, and oneworld are the airline alliances operating flights between London and St. Louis, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from London to St. Louis?

    You can catch a nonstop flight from London to St. Louis on on Tuesday, Wednesday, Friday, and Sunday.

  • How does KAYAK find such low prices on flights from London to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $679 or less one-way and $1,017 or less round-trip.
  • If you’re flying from London Airports, you can relax in an airport lounge before taking off. Most flights on this route depart from Heathrow Airport (LHR), and the Club Aspire Lounge in Terminal 5 is a good option for about £40. Those flying from Gatwick Airport (LGW) can enjoy the Plaza Premium Lounge in the North Terminal for around £28. Both lounges offer food, drink and complimentary wi-fi.
  • As several airports operate the route from London Airports to St. Louis, you can pick where you depart from based on convenience. For example, if you’re starting your journey from the southwest or Midlands, Heathrow is a great airport. On the other hand, Gatwick might be the easiest airport to reach if you’re in the south of the UK.
  • Once you’ve touched down at St. Louis Airport (STL), travelling to nearby places is easy. For example, you can drive to Columbia in about 1h 35min, Springfield in around 1h 30min or Chesterfield in approximately 20min.
  • With London's excellent transport system, you will find it easy to travel to any of London Airports for your flight. If your flight departs from Heathrow Airport, you can take the Heathrow Express from London Paddington Train Station in approximately 15min. For those departing from Gatwick Airport, there is the Gatwick Express that leaves from London Victoria train station and takes around 30min.
  • If you have a disability and you're flying from London Airports, you can request help upon arrival at the terminal. However, we suggest you call your airline at least 48h before take-off so that they can arrange for suitable assistance.

Prefer to fly direct from London to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London to Lambert-St Louis.
Find which airlines fly direct from London to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

London to Lambert-St Louis

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Friday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Direct returns

Lambert-St Louis to London

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Friday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Everything you need to know for your flight from London to St. Louis

Information on your arrival and departure airports