STL - LON

$207 Find Cheap Flights from St. Louis to London - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to London departing on 7/28. 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

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Everything you should know

Cheapest round-trip
$1,062
Typical prices: $656-$967
United Airlines
Thu 9/3Sun 9/20
STL - LHR • 1 stop
Cheapest non-stop
$1,072
British Airways
Wed 8/26Wed 9/2
STL - LHR • Non-stop
Nonstop flights
Tue, Wed, Fri, Sun
You can fly direct with British Airways. Average duration is 8h 00m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $632 (round-trip)
Shortest trip • 10h 30m (one-way)
Insights
Insights
Insights
Insights
Top routes
Cheapest
Most popular
Insights
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Avoid delays
Most punctual • 69% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to travel
Cheapest • 76% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to London 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 St. Louis to London

Thu, Sep 3 - Sun, Sep 20
United Airlines Logo
12:28 pm - 5:55 am
STL
-
LHR
11h 27m
1 stop
United Airlines Logo
8:30 am - 2:00 pm
LHR
-
STL
11h 30m
1 stop
$1,062United Airlines
Wed, Sep 2 - Fri, Sep 11
Delta Logo
10:33 am - 7:55 am
STL
-
LCY
15h 22m
2 stops
Delta Logo
9:20 am - 8:35 pm
LCY
-
STL
17h 15m
2 stops
$1,063Delta
Mon, Aug 24 - Fri, Aug 28
Scandinavian Airlines Logo
12:52 pm - 6:30 pm
STL
-
LHR
23h 38m
2 stops
Scandinavian Airlines Logo
6:40 am - 11:58 pm
LHR
-
STL
23h 18m
2 stops
$1,063Scandinavian Airlines
Fri, Sep 4 - Sun, Sep 13
United Airlines Logo
9:30 am - 6:45 am
STL
-
LHR
15h 15m
1 stop
United Airlines Logo
11:05 am - 6:16 pm
LHR
-
STL
13h 11m
1 stop
$1,064United Airlines
Wed, Jul 29 - Wed, Aug 26
United Airlines Logo
9:30 am - 6:45 am
STL
-
LHR
15h 15m
1 stop
United Airlines Logo
8:00 am - 3:38 pm
LHR
-
STL
13h 38m
1 stop
$1,066United Airlines
Sun, Oct 4 - Tue, Oct 13
Multiple Airlines Logo
2:40 pm - 12:20 pm
STL
-
LGW
15h 40m
2 stops
Multiple Airlines Logo
12:40 pm - 8:00 pm
LGW
-
STL
13h 20m
1 stop
$1,068Multiple Airlines
Thu, Sep 17 - Tue, Sep 22
Air Canada Logo
8:55 am - 10:00 am
STL
-
LHR
19h 05m
3 stops
Air Canada Logo
6:50 am - 8:20 pm
LHR
-
STL
19h 30m
2 stops
$1,070Air Canada
Thu, Oct 1 - Sun, Oct 11
Air Canada Logo
12:10 pm - 8:35 am
STL
-
LHR
14h 25m
2 stops
Air Canada Logo
9:30 am - 8:00 pm
LHR
-
STL
16h 30m
2 stops
$1,072Air Canada
Sun, Aug 30 - Mon, Sep 7
Lufthansa Logo
3:30 pm - 5:55 pm
STL
-
LCY
20h 25m
1 stop
Lufthansa Logo
6:30 pm - 1:25 pm
LCY
-
STL
24h 55m
1 stop
$1,073Lufthansa
Sun, Jan 3 - Thu, Jan 14
Lufthansa Logo
3:40 pm - 9:15 am
STL
-
LCY
11h 35m
1 stop
Lufthansa Logo
9:50 am - 7:40 pm
LCY
-
STL
15h 50m
2 stops
$1,083Lufthansa
Booking Insights

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

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

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

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

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

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

The cheapest return flight from St. Louis to London costs $898 on the route between St. Louis (STL) and London Heathrow Airport (LHR). It is also the most popular route.

What’s the cheapest day of the week to fly from St. Louis to London?

The average price of all round-trip flights from St. Louis to London clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from St. Louis to London, look for departures on Thursdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from London, Tuesday is the cheapest day to fly and Friday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to London, 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 St. Louis to London is April, where tickets cost $117 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $804 and $579 respectively.

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

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 2 stops layover the cheapest option at $962 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to London, 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 St. Louis to London, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$207
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from St. Louis to London Gatwick Airport

When to book flights from St. Louis to London

Are your dates flexible? Find out the best times to travel from St. Louis to London 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 St. Louis to London

  • Are there hotels near London airports?

    There are a lot of hotels at and surrounding Heathrow Airport, and they provide rooms at prices to suit a wide range of budgets. The Yotel is a hotel with a pod-like design that is located inside Terminal 4 and is styled like the first-class cabin of an airplane. You may book rooms on an hourly basis, which is an excellent choice if you have a stopover and need to get some sleep before continuing on your journey.

  • What is the most reliable way to get to the city center from the Heathrow Airport London (LHR)?

    The most reliable way to get into s the town center is to take either the Tube's Piccadilly Line or the Heathrow Express train. This option is best if you only have to wait for less than 6h, but it is a lot more expensive than the Tube.

  • Are there banking services available at Lambert-St Louis Airport (STL)?

    A full-service US Bank offers comprehensive banking and foreign exchange services. It is situated in Terminal 1, Lower Level, across from Great American Bagel.

  • Does Lambert-St Louis Airport (STL) have lactating rooms for mothers?

    St. Louis Lambert International Airport (STL) has a private, designated place for nursing mothers. The room is situated after security checkpoints on all three concourses, close to Gates A10, C9, and E33.

  • How many flights are there between St. Louis and London per day?

    There is a maximum of 1 nonstop flight a day that takes off from St. Louis and lands in London, with an average flight time of 8h 00m. The most common departure time is 9:00 pm and most flights take off in the evening. Each week, there are 4 flights.

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

    In the last 5 days, the lowest price for a flight from St. Louis to London was $207 for a one-way ticket and $1,062 for a round-trip.

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

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

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

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

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to London?

    American Airlines, Lufthansa, and United Airlines offer inflight Wi-Fi service on the St. Louis to London flight route.

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

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

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

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

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

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

  • Which is the best airline for flights from St. Louis to London, Delta or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from St. Louis to London are Delta and Virgin Atlantic. With an average price for the route of $944 and an overall rating of 7.8, Delta is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of $1,119 and an overall rating of 7.5.

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

    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 St. Louis to London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from St. Louis 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 St. Louis to London?

    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 London with an airline and back to St. Louis with another airline.

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

    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 London from St. Louis 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 St. Louis to London

  • Looking for a cheap flight? 25% of our users found flights on this route for $678 or less one-way and $1,077 or less round-trip.
  • If you want to travel to London from Lamber St Louis, there are three main airports you can use for your arrivals, London Heathrow Airport (LHR), Gatwick Airport (LGW), and London City Airport (LCY). London Heathrow airport is the main international airport connecting cities and nearby countries.
  • There is a lounge that you may access by either making a payment at the door or enrolling in a lounge membership program, and this is regardless of the class of service that you are flying at Lambert-St Louis (STL). There is also a facility called the USO that provides active members of the United States military and their families with access to a lounge that is free of charge.
  • You may take your children to the play area for youngsters if you want to make sure that they use up all of their excess energy before taking off on their flight. An exhibit with a focus on transportation may be seen at the St. Louis International Play Port, which can be found in the STL airport near Gate C3.
  • If you have any inquiries while at St Louis Airport, you can go to one of the information desks located around the airport for help. Passengers in Terminal 2 have many options for getting in touch with the Information Booth. You may use the courtesy phones that are situated at Gate E10 or in the baggage claim area just across from the Southwest Airlines Baggage Office.
  • Heathrow Airport (LHR) does not provide complimentary wireless Internet access. Instead, it offers Boingo, a pay-as-you-go Wi-Fi service. There are additional PCs with wired Internet connections available at each terminal, however, they are also for a fee. However, if you pay to enter an executive lounge such as o1 Lounges, Plaza Premium, and Club Aspire, you will enjoy free internet access. London City Airport and Gatwick Airport on the other hand offer complimentary Wi-Fi connection and each lounge has a shower.
  • If you need assistance with your bags, there are baggage carts available for a fee at the departures area of Terminal 1 and in the baggage claim sections of Terminals 1 and 2 respectively at STL Airport.

Prefer to fly direct from St. Louis to London?

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

Direct departures

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

Direct returns

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

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

Information on your arrival and departure airports