$342 Find Cheap Flights from the United Kingdom 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 to St. Louis departing on 2/10. 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 for flights 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 for flights to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$471
Overall average: $1,036
United Airlines
Tue 1/20Wed 2/4
LHR - STL • 1 stop
Cheapest non-stop
$689
American Airlines
Tue 5/5Fri 5/8
LHR - STL • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Finnair’s Economy Comfort offers more legroom.
BA’s Euro Traveller includes a cabin bag, no fees.
Expert advice
Expert advice
Expert advice
Expert advice
When to travel
March
Cheapest • 23% price drop
July
Most popular
Good to know
Good to know
+1
+1
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Good to know
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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
Expert advice
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

Tue, Jan 20 - Wed, Feb 4
United Airlines Logo
7:25 am - 5:43 pm
LHR
-
STL
16h 18m1 stop
United Airlines Logo
11:20 am - 5:55 am
STL
-
LHR
12h 35m1 stop
$471United Airlines
Mon, Feb 2 - Mon, Feb 9
Multiple Airlines Logo
2:00 pm - 11:33 pm
LGW
-
STL
15h 33m1 stop
Multiple Airlines Logo
10:16 am - 10:00 am
STL
-
LGW
17h 44m1 stop
$562Multiple Airlines
Thu, Jan 22 - Mon, Jan 26
Lufthansa Logo
11:10 am - 10:58 pm
LHR
-
STL
17h 48m2 stops
Lufthansa Logo
6:40 pm - 11:15 am
STL
-
LHR
10h 35m1 stop
$601Lufthansa
Tue, Feb 3 - Thu, Feb 12
American Airlines Logo
11:20 am - 11:12 pm
LGW
-
STL
17h 52m2 stops
American Airlines Logo
9:36 am - 9:00 am
STL
-
LGW
17h 24m2 stops
$637American Airlines
Fri, Feb 20 - Fri, Feb 27
American Airlines Logo
11:20 am - 8:35 am
LGW
-
STL
27h 15m2 stops
American Airlines Logo
8:00 am - 7:30 am
STL
-
LGW
17h 30m2 stops
$692American Airlines
Mon, Jan 19 - Mon, Feb 2
British Airways Logo
7:15 am - 10:44 pm
LCY
-
STL
21h 29m2 stops
British Airways Logo
9:33 am - 2:35 pm
STL
-
LCY
23h 02m2 stops
$708British Airways
Mon, May 4 - Sat, May 9
British Airways Logo
7:15 pm - 5:03 pm
LCY
-
STL
27h 48m2 stops
British Airways Logo
6:53 pm - 9:40 am
STL
-
LCY
32h 47m2 stops
$730British Airways
Fri, Feb 20 - Fri, Feb 27
Lufthansa Logo
9:25 am - 12:05 am
EDI
-
STL
20h 40m1 stop
Lufthansa Logo
6:45 pm - 4:55 pm
STL
-
EDI
16h 10m2 stops
$736Lufthansa
Thu, Feb 19 - Mon, Feb 23
Iberia Logo
7:50 am - 9:12 pm
LCY
-
STL
19h 22m2 stops
Iberia Logo
2:19 pm - 2:35 pm
STL
-
LCY
18h 16m2 stops
$752Iberia
Thu, Feb 19 - Mon, Feb 23
Iberia Logo
7:50 am - 9:12 pm
LCY
-
STL
19h 22m2 stops
Iberia Logo
10:37 am - 2:35 pm
STL
-
LCY
21h 58m2 stops
$755Iberia
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 month to fly to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for 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 $863 on average for one-way flights. On the other hand, the most expensive months are June and August, where the average cost of tickets from the United Kingdom is $1,909 and $1,541 respectively. For return trips, the best month to travel is March with an average price of $739.

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 1 week before departure. For the absolute cheapest price, our data suggests you should book 89 days 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.
Airlines
Finnair

Finnair’s A350 features lower cabin altitude and higher humidity for comfort.


Finnair’s Economy Comfort offers more legroom for a small additional charge.

Read more about FinnairBy Gabriel Leigh
Iberia

Iberia’s business class offers all-aisle access and Wi-Fi on long-haul flights.


Iberia’s Premium Economy offers wider seats and adjustable headrests on long-haul flights.

Read more about IberiaBy Marisa Garcia
United Airlines

United’s Polaris cabin offers lie-flat seats with aisle access on long-haul flights.


United’s Premium Plus offers extra legroom and recline on long-haul flights.

Read more about United AirlinesBy Stefanie Waldek
Lufthansa

Lufthansa’s Premium Economy offers 50% more personal space and an extra checked bag on long-haul flights.


Lufthansa’s First Class includes a separate cabin with full-height walls and a double bed.

Read more about LufthansaBy Jessica Macdonald
Virgin Atlantic

Virgin’s Upper Class offers fully flat beds and exclusive lounge access.


Virgin’s Premium Economy offers wider seats and enhanced meal service on long-haul flights.

Read more about Virgin AtlanticBy Laura Ratliff
British Airways

BA’s Premium Economy offers more space and peace with 18 cm extra legroom.


BA’s Euro Traveller includes a cabin bag and no surprise fees.

Read more about British AirwaysBy Duncan Madden
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel Leigh

Gabriel Leigh

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 Garcia

Marisa Garcia

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

Stefanie Waldek

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

Jessica Macdonald

Jessica Macdonald

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

Laura Ratliff

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 Madden

Duncan Madden

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 seasonMarch
Cheapest flight$342
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from London Gatwick Airport to St. Louis

FAQs - booking St. Louis flights

  • 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 $644. The cheapest price found on KAYAK in the last 2 weeks cost $480 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 1,349 direct flights from within United Kingdom to St. Louis. The most common day for departures is Friday, with 17% 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 $588 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.

Reviews of the top airline flying from the United Kingdom to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United Kingdom to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 7655 reviews
6.7Comfort
7.6Crew
6.9Boarding
6.4Food
6.4Entertainment
Airline reviews

Check-in experience, for business call please provide a premium experience

6.0 GoodAli, Jan 2026
LHR - ORD
Read more British Airways reviews

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Entertainment devices on A380 need to be fixed, the seats might do with updates.

Everything. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

Great seat in premium economy, great food and drinks throughout lots of in flight entertainment. 1 hour 40 min delayed flying out , 2 1/2 hour wait at passport control in tampa

My seat cushion was poor. The cushion was compressed and was uncomfortable for such a long flight.

I was in a bulkhead seat and my tray table wasn't level. Eating was difficult.

Audi visual not working for a whole group of seats in first class. How does a plane leave the main hub in such poor condition? How much that we can’t see so immediately is also compromised?

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

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)