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£373 Find Cheap Flights to St. Louis – Compare and Save

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Everything you should know

Cheapest return flight
£567
Typical prices: £654-£996
Scandinavian Airlines
Mon 9/4Tue 17/4
LHR - STL • 2 stops
Cheapest direct flights
£777
Typical prices: £719-£997
British Airways
Sun 8/4Sun 22/4
LHR - STL • Direct
Top airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
Top routes
Cheapest • 15% average savings
Most popular
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 15 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
+1
Good to know
+1
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We hope you enjoy your trip to St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights to St. Louis

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to St. Louis

Fri, 9 Apr - Sat, 17 Apr
Scandinavian Airlines Logo
06:40 - 23:39LHR  London Heathrow-STL Lambert-St Louis
22h 59m2 stops Kastrup Copenhagen Atlanta Hartsfield-Jackson
Scandinavian Airlines Logo
13:30 - 17:40STL  Lambert-St Louis-LHR London Heathrow
22h 10m2 stops Atlanta Hartsfield-Jackson Kastrup Copenhagen
£567Scandinavian Airlines
Wed, 25 Nov - Sun, 29 Nov
United Airlines Logo
13:35 - 21:40LHR  London Heathrow-STL Lambert-St Louis
14h 05m1 stop Chicago O'Hare Intl
United Airlines Logo
13:08 - 05:55STL  Lambert-St Louis-LHR London Heathrow
10h 47m1 stop Chicago O'Hare Intl
£569United Airlines
Fri, 16 Apr - Fri, 23 Apr
Scandinavian Airlines Logo
19:10 - 23:39MAN  Manchester-STL Lambert-St Louis
34h 29m2 stops Kastrup Copenhagen Atlanta Hartsfield-Jackson
Scandinavian Airlines Logo
13:30 - 09:15STL  Lambert-St Louis-MAN Manchester
37h 45m2 stops Atlanta Hartsfield-Jackson Kastrup Copenhagen
£581Scandinavian Airlines
Mon, 7 Dec - Tue, 22 Dec
Finnair Logo
09:55 - 15:44LHR  London Heathrow-STL Lambert-St Louis
35h 49m2 stops Charlotte Douglas Miami
Finnair Logo
11:09 - 07:20STL  Lambert-St Louis-LHR London Heathrow
14h 11m1 stop Charlotte Douglas
£628Finnair
Wed, 20 Jan - Wed, 24 Mar
Lufthansa Logo
06:30 - 13:45LHR  London Heathrow-STL Lambert-St Louis
13h 15m1 stop Frankfurt am Main
Lufthansa Logo
13:00 - 10:50STL  Lambert-St Louis-LHR London Heathrow
16h 50m1 stop Washington, D.C. Dulles Intl
£652Lufthansa
Sun, 6 Dec - Sun, 13 Dec
Finnair Logo
09:55 - 17:25LHR  London Heathrow-STL Lambert-St Louis
37h 30m2 stops Charlotte Douglas Miami
Finnair Logo
20:24 - 10:25STL  Lambert-St Louis-LHR London Heathrow
32h 01m1 stop Chicago O'Hare Intl
£664Finnair
Mon, 7 Dec - Tue, 22 Dec
Iberia Logo
12:35 - 19:58LHR  London Heathrow-STL Lambert-St Louis
13h 23m1 stop Chicago O'Hare Intl
Iberia Logo
08:06 - 08:15STL  Lambert-St Louis-LHR London Heathrow
18h 09m1 stop Dallas/Fort Worth
£665Iberia
Wed, 9 Dec - Wed, 16 Dec
Lufthansa Logo
06:30 - 13:45LHR  London Heathrow-STL Lambert-St Louis
13h 15m1 stop Frankfurt am Main
Lufthansa Logo
13:18 - 05:55STL  Lambert-St Louis-LHR London Heathrow
10h 37m1 stop Chicago O'Hare Intl
£668Lufthansa
Mon, 7 Dec - Mon, 21 Dec
Iberia Logo
13:50 - 22:20LHR  London Heathrow-STL Lambert-St Louis
14h 30m1 stop Dallas/Fort Worth
Iberia Logo
10:20 - 08:15STL  Lambert-St Louis-LHR London Heathrow
15h 55m1 stop Dallas/Fort Worth
£670Iberia
Wed, 9 Dec - Wed, 16 Dec
United Airlines Logo
13:30 - 22:59LHR  London Heathrow-STL Lambert-St Louis
15h 29m2 stops Frankfurt am Main Chicago O'Hare Intl
United Airlines Logo
08:30 - 08:25STL  Lambert-St Louis-LHR London Heathrow
17h 55m2 stops Washington, D.C. Dulles Intl Newark
£672United Airlines
Booking Insights

Price, demand, and travel trends for flights to St. Louis

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What is the cheapest flight to St. Louis?

London Heathrow Airport to St. Louis is the cheapest route at £567 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to St. Louis?

On average, a return flight from the United Kingdom to St. Louis costs £778, based on KAYAK data over the past 12 months. Return fares from London average £734, while Edinburgh runs a bit higher at £818.

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

Thursday is the cheapest day to fly to St. Louis at £766 return on average over the past 12 months on KAYAK. Sunday is the most expensive at £898.

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

•February is the cheapest month to fly to St. Louis with an average price of £582 return.
•August (£1,002) and July (£977) are the most expensive.

Based on KAYAK data over the past 12 months.

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

Evening flights to St. Louis are the cheapest at £702 return on average. Afternoon flights are the most expensive at £815.

What is a good deal for flights to St. Louis?

Flights under £654 are considered a good deal. 25% of KAYAK users found return flights to St. Louis at or below these prices, with the lowest fares from:
•London £637.

When are flights to St. Louis the cheapest?

Flights to St. Louis are cheapest 15 weeks before departure. Booking in this window typically costs about 34% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight to St. Louis

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
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.

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.

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 travelled to more than 50 countries across six continents.

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 out at sea, likely en route to Antarctica or the Arctic.

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, specialising in airline interiors and regulations. 10 years ago, she pivoted to journalism. She shares her insights in leading aviation, travel and business publications and on her site, FlightChic.

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.

Key details for flights to St. Louis

Low season

February

Cheapest flight

£373
Beat the crowds with an average 49% drop in traveller numbers.
The most popular month to fly with an average 37% increase in traveller numbers.
One-way flight from London Gatwick Airport to St. Louis

When to book flights to St. Louis

Are your dates flexible? Find out the best times to travel to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to St. Louis, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • How do I know if a flight to St. Louis is a good deal?

    A good deal on a flight to St. Louis is around £654 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How far is Lambert-St Louis from St. Louis city centre?

    Lambert-St Louis is 13.1 mi from St. Louis city centre.

  • Which city has the cheapest flights to St. Louis?

    Based on fares booked in the past 5 days, the cheapest flights to St. Louis are from London, starting at £567 return.

  • How expensive are last-minute flights to St. Louis?

    Last-minute fares to St. Louis (booked within two weeks of departure) are typically 33% higher than the average return fare of £778.

  • What is the difference between the most popular and the most frequent airline at St. Louis?

    American Airlines operates the most flights from the United Kingdom to St. Louis at 0 per week, while British Airways is the airline most often selected by KAYAK users searching for flights from the United Kingdom to St. Louis. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Which airlines should I consider for flights to St. Louis?

Your guide to booking St. Louis flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to St. Louis, book around 15 weeks before departure. Based on KAYAK data from the last 12 months, fares are historically about 34% lower during this window than last-minute fares.
  • For flights to St. Louis, a good return fare is around £654. If you find a fare below that, you're getting a strong deal.
  • If your travel dates are flexible, consider flying to St. Louis in February. Return fares historically average £582, making February the cheapest month to travel based on KAYAK data from the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to afternoon to save up to £113 on a return flight. Afternoon flights to St. Louis average £702 compared to £815 for midday flights.
  • Bag allowances vary by airline, fare type, cabin class, and route. On flights to St. Louis, some airlines may include bags at no extra cost. For example, British Airways includes a cabin bag and a checked bag in Economy class, Iberia includes a cabin bag and a checked bag in Economy class, and Finnair includes a cabin bag in Economy class. Always check the fare details before booking, since bag policies can change by ticket type.
  • Once you arrive in St. Louis, a few great places to start are St. Louis Union Station, Gateway Arch, and America's Center Convention Complex. These are popular with first-time visitors and can give you a good feel for the area.

Reviews of the top 5 airlines flying to St. Louis

 
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.
7.5
Virgin AtlanticOverall score based on 698 reviews
7.3Comfort
6.9Food
8.1Crew
7.5Entertainment
7.7Boarding
Airline reviews

Lounge was top notch h with great variety of food and drinks. Cabin crew were great. Smooth flight.

10.0 ExcellentLye Sim, Jun 2026
Read more Virgin Atlantic reviews

Lounge was top notch h with great variety of food and drinks. Cabin crew were great. Smooth flight.

My seat 3G did not go down fully and the buttons were not working properly

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Unfortunately delayed 2 hrs due to faulty tyre.. which had to be changed, but better safe than sorry.

Security area in terminal 3 needs to be made much nicer. Less claustrophobic and use of glass and big ceilings wouldhelp

accomodating check in staff, friendly flight crew ( a crew member was speaking tactlessly and was overfamiliar with passengers

Seats need to be updated. Allowance needs to be made for dinner service at an alternative time

The crew should demonstrate flexibility by moving a screaming infant to its own seat with 1 parent

If I could fly Virgin Atlantic airlines to every place, I need to go, I would. Leaving Heathrow through the special virgin air entrance, security is completely white glove service. I love this airline. From ticketing agents to flight staff everyone tries to make it a wonderful & happy flight experience. I wish other airlines copied the positive culture of Virgin Airlines.

Check in wasn’t the best since i had to go to additional security check. Waste of your and my time but i do understand. Worst part of the journey was broken seat, it was hard to sit on it for 7 hours. Someone need to check on cushions and replace them as i felt i was sitting on metal rod all the way. Food and entertainment was solid and crew was good.

The staff on the flight were utterly brilliant; there was a young man who was particularly exceptional. Boarding was quick and seamless, and service was great! Seats were fab, as was the entertainment and its ease of access

i’m The staff on my flight were amazing as always, beautiful professional staff, they do amazing job. the food ? room for improvement

The agents at the boarding desk were not very helpful, however the hostesses on board the flight were great, the food was ok, and there were lots for choices for entertainment. I was stuck in an middle row seat which was a pain on a full flight, but otherwise the flight was great.

The man in front of me reclined the entire flight, including during meals, which was aggravating. My screen had issues with brightness and kept flickering in and out.

Very helpful staff especially when helping with the missing baggage

I was pleasantly surprised and enjoyed the services of the airline since flying is not my favorite thing. My goal was to be with my brother's family in Manchester after his death. All staff was helpful, the food appreciated since I selected an overnight flight. Every aspect of the experience was comforting. I plan to return to Manchester in order to attend my brother's funeral in October and hope that I am able to find a reasonable priced flight. Thank you

Very good except for the boarding process which was more hectic than it should have been

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

Flight was cancelled. There were no Aer Lingus reps to help. I had to rebook my flight and find a hotel. Still had nothing from the airline.

As with most flights these days it was delayed by about 30 min.

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Improvements in communication and empathy are absolutely necessary for American Airlines staff (top down). It’s like they are numb to the needs of their customers.

I like the speed of boarding and deplaning and the fact that everything was on time. The crew (attendants) were probably quite new and did not begin the in cabin service until 30 min before landing even though there was little to no air turbulence for the last 1.5 hours of the flight. It made for a mad scramble at the end to get trash collected and carts stowed before touch down.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

I did like the employee's, they are very friendly and all smiled most of the time, Overall, from checking in bags to getting on plane, not enough employees to be able to get all on the plane, therefore I was not able to get on the plane, due to no one wea there for me to check in my bag, so I decided to go thru the security point and by the time they were done with my bags, I was told that my bag cannot be checked in, and then found out that the lady that does the check in was boarding the customers onto the plane, she said that she was going back and fourth, there for was not able to get on the plane, which changed all my flights by the time I got to Dallas, I was on standby 3 times, and wasn't sure about being able to get on the fourth plane, so ended up buying another plane ticket, so I could make my destination on time.

Not sure about entertainment as I didn't use any, so maybe there should be an NA option on this survey. Otherwise everything was just as it should be. Of course I wish planes were more comfortable and had seats that would tilt back further.

After flying on Icelandair to England and getting a greeting glass of champagne, free drinks and salmon I returned to the US on United for around the same price and got told immediately that I would have to eat a vegetarian meal because everything else was gone and every time I paused thinking in flight entertainment I got advertisements on the screen. On the Icelandair flight I had a great selection of documentary films and on United I was reduced to watching the Spider-Man movie. Guest which airline I look forward to flying again?

Good communication via the app regarding the delayed departure. Uncomfortable seat for tall passengers. Could not straighten my legs.

It was okay. Mothers with rowdy children should be invited to sit in front of them.

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

I wasn’t allowed to board with my children. I was charged outrageous costs for basic carry on size luggage. The entertainment screens were outdated and not user friendly.

Well,I miss a flight to Stl with United,they send me to Stl with a different airline, but same day,which was great

NEVER TOOK THIS FLIGHT. LUFTHANSA CANCELED THIS FLIGHT WITHOUT ANY NOTICE. We were rerouted through Chicago on United airlines with a layover of five hours and then on American Airlines to St. Louis. The United club lounge in Chicago is good but there is no shower unlike Bangalore 080 lounge

At the gate I requested a change of seat to an aisle because of a medical issue, and I was graciously accommodated. Everyone was very pleasant and helpful.

Had to push staff to get good flight due to cancellation and delays for staff shortage

Tiny plane Had to gate check bags, a problem since we were flying back from an international vacation

My inflight entertainment unit was not working. The chair compartments were broken. The suite door would not latch. Given the cost of the total ticket, I was extremely disappointed in the service. The flight crew was not very helpful.

7 hours is a very long flight - the crew was ever present and helpful. The cabin was comfortable - WiFi was a disaster as was the entire entertainment and flight info system. They could have helped passengers by explaining that the information available on our screens and our continued attempts to entertain ourselves with our phones would be in vain. Other than that - all was well! Very comfortable seats, amenities galore and lots of crew attention. They might have benefitted from more crew as very few served the premium and basic economy,

The boarding area was crowded with inadequate seating. Flight delayed which made it uncomfortable.

Terrible we had to wait out in the cold for transfer bus to take us to the plane. Once we finally got on the plane seat had no cushioning not comfortable at all. Food was overcooked and dried out. I was skipped over when they served drinks I had to call them back to give me a drink with my food. Overall terrible experience this time. I have used BA before and never experienced service like this before. If this keeps up I will look for other options

My experience on this flight was good. The seat I had had a lot of leg room, but it was so close to the aisle that the flight attendants kept bumping into my visual monitor connected to my seat to watch tv.

It was fine, but it cost me twice as much to return to Boston as it took me to get to Heathrow from Boston two weeks prior. I flew on Jet Blue over and it was half the cost of British Air.

Staff and comfort were great but first choice meal was unavailable even in row 21.

Cabin crew was very good. No wifi and no doors to the suites

Great until k found out they never got my check bags onto the plane.

They ran out of earphones so my 3rd daughter couldn’t use the on board entertainment the entire flight. They also ran out of food choices (chicken or cheese) by the time they got to the last few rows, so my oldest daughter, wasn’t given a choice. Luckily she isn’t a vegetarian because they only had chicken left.

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Litchfield
Chesterfield
Maryland Heights
Eureka
Farmington
St. Charles
Fenton
Edwardsville
Hermann
Collinsville
Festus
Clayton
Florissant
Alton

More options for your flight to St. Louis