$352 Find Cheap Flights from the United Kingdom to St. Louis - 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 to St. Louis departing on 9/21. 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.
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1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from the United Kingdom to St. Louis

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

Wed, Sep 30 - Wed, Oct 21
Multiple Airlines Logo
2:00 pm - 7:39 pm
LGW
-
STL
35h 39m
1 stop
Multiple Airlines Logo
10:35 am - 10:00 am
STL
-
LGW
17h 25m
2 stops
$580Multiple Airlines
Wed, Sep 23 - Fri, Oct 2
United Airlines Logo
12:00 pm - 8:47 pm
LHR
-
STL
14h 47m
1 stop
United Airlines Logo
1:36 pm - 12:25 pm
STL
-
LHR
16h 49m
1 stop
$679United Airlines
Fri, Aug 28 - Sun, Sep 13
Scandinavian Airlines Logo
6:40 am - 11:58 pm
LHR
-
STL
23h 18m
2 stops
Scandinavian Airlines Logo
3:54 pm - 5:40 pm
STL
-
LHR
19h 46m
2 stops
$761Scandinavian Airlines
Thu, Sep 10 - Thu, Oct 1
Scandinavian Airlines Logo
6:40 am - 11:42 pm
LHR
-
STL
23h 02m
2 stops
Scandinavian Airlines Logo
2:30 pm - 5:40 pm
STL
-
LHR
21h 10m
2 stops
$772Scandinavian Airlines
Tue, Sep 15 - Tue, Sep 29
Lufthansa Logo
6:30 am - 1:25 pm
LHR
-
STL
12h 55m
1 stop
Lufthansa Logo
1:29 pm - 6:45 am
STL
-
LHR
11h 16m
1 stop
$811Lufthansa
Wed, Sep 2 - Wed, Sep 23
Lufthansa Logo
6:30 am - 1:25 pm
LHR
-
STL
12h 55m
1 stop
Lufthansa Logo
12:28 pm - 5:55 am
STL
-
LHR
11h 27m
1 stop
$812Lufthansa
Tue, Sep 15 - Tue, Sep 29
Virgin Atlantic Logo
10:00 am - 8:35 pm
LCY
-
STL
16h 35m
2 stops
Virgin Atlantic Logo
1:55 pm - 9:30 am
STL
-
LCY
13h 35m
2 stops
$873Virgin Atlantic
Wed, Sep 2 - Wed, Sep 23
Virgin Atlantic Logo
10:00 am - 8:42 pm
LCY
-
STL
16h 42m
2 stops
Virgin Atlantic Logo
6:45 pm - 4:40 pm
STL
-
LCY
15h 55m
2 stops
$874Virgin Atlantic
Tue, Nov 24 - Thu, Dec 3
British Airways Logo
6:05 am - 4:47 pm
EDI
-
STL
16h 42m
2 stops
British Airways Logo
2:54 pm - 12:50 pm
STL
-
EDI
15h 56m
2 stops
$914British Airways
Mon, Sep 21 - Wed, Sep 30
British Airways Logo
11:25 am - 9:43 pm
EDI
-
STL
16h 18m
1 stop
British Airways Logo
1:25 pm - 7:40 am
STL
-
EDI
12h 15m
1 stop
$925British Airways
Booking Insights

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

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

What is the cheapest flight to St. Louis?

These are the best round-trip prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to St. Louis was found on the route from London, at $580 return. The most popular connection is from London to St. Louis and KAYAK users have found round-trip deals for as low as $679 in the last 5 days.

What is the cheapest day to fly to St. Louis?

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

Based on KAYAK data, the cheapest day to fly to St. Louis is Tuesday where round-trip tickets can be as cheap as $1,065. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $1,408 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights 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 to St. Louis is February, where tickets cost $817 on average for return flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from the United Kingdom is $1,250 and $1,199 respectively. For one-way flights, the best month to travel is February with an average price of $650.

What is the cheapest time of day to fly to St. Louis?

The average price for all round-trip flights to St. Louis depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to St. Louis is generally in the evening, when round-trip flights cost $1,143 on average. The most expensive time of day to fly to St. Louis is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,143.

How far in advance should I book a flight 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 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, you should book around 3 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Find deals
Expert advice

Expert advice for your flight to St. Louis

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more
Laura Ratliff

Laura Ratliff

Expert on Virgin Atlantic

Laura Ratliff is a New York-based writer and editor. She lives in downtown Brooklyn with her husband and their beloved dogs. Originally from Texas, she now considers New York City her home. She typically spends more than 200,000 miles on a plane each year and stays in plenty of hotels.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more

Good to know

Low season

March

Cheapest flight

$352
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from London Gatwick Airport to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 5 days, the cheapest flight deal to St. Louis was found on the route from London, at $580 return. The most popular connection is from London to St. Louis and KAYAK users have found round-trip deals for as low as $679 in the last 5 days.

  • How far is Lambert-St Louis Airport from central St. Louis?

    Lambert-St Louis Airport is 13 miles from the center of St. Louis.

  • What is the name of St. Louis’s airport?

    St. Louis is served by Lambert-St Louis Airport, also commonly referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl. The airport code is STL.

  • How much is a flight to St. Louis?

    On average, a flight to St. Louis costs $1,382. The cheapest price found on KAYAK in the last 2 weeks cost $1,253 and departed from London Heathrow Airport.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 2,923 direct flights from within United Kingdom to St. Louis. The most common day for departures is Sunday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $1,378 or less one-way.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

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

Information on the airport you'll fly into in St. Louis

St. Louis (STL)