£238 Find Cheap Flights from St. Louis to the United Kingdom

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 the United Kingdom departing on 19/5. 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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Cheap Flights from St. Louis to the United Kingdom

Cheapest return prices found by our users on KAYAK in the last 72 hours
London
London2 stops£490
Manchester
Manchester2 stops£443
Birmingham
Birmingham1 stop£487
Belfast
Belfast2 stops£467
Leeds
Leeds2 stops£1,186
Inverness
Inverness2 stops£372
London
London2 stops£490
Manchester
Manchester2 stops£443
Birmingham
Birmingham1 stop£487
Belfast
Belfast2 stops£467
Leeds
Leeds2 stops£1,186
Inverness
Inverness2 stops£372

Book Cheap St. Louis to the United Kingdom Plane Tickets

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

Tue, 27 Jan - Tue, 3 Feb
Lufthansa Logo
11:22 - 07:55
STL
-
EDI
14h 33m1 stop
Lufthansa Logo
09:25 - 23:59
EDI
-
STL
20h 34m1 stop
£419Lufthansa
Mon, 12 Jan - Wed, 21 Jan
Lufthansa Logo
18:40 - 17:00
STL
-
MAN
40h 20m2 stops
Lufthansa Logo
06:00 - 13:55
MAN
-
STL
13h 55m1 stop
£443Lufthansa
Mon, 12 Jan - Wed, 21 Jan
Lufthansa Logo
18:40 - 23:20
STL
-
MAN
22h 40m2 stops
Lufthansa Logo
06:25 - 19:27
MAN
-
STL
19h 02m2 stops
£455Lufthansa
Fri, 6 Feb - Fri, 13 Feb
British Airways Logo
17:04 - 15:20
STL
-
EDI
16h 16m2 stops
British Airways Logo
10:55 - 22:54
EDI
-
STL
17h 59m2 stops
£455British Airways
Fri, 6 Feb - Fri, 13 Feb
British Airways Logo
14:54 - 12:10
STL
-
EDI
15h 16m2 stops
British Airways Logo
10:55 - 23:28
EDI
-
STL
18h 33m2 stops
£456British Airways
Mon, 12 Jan - Mon, 19 Jan
British Airways Logo
18:44 - 14:00
STL
-
MAN
13h 16m2 stops
British Airways Logo
20:05 - 22:44
MAN
-
STL
32h 39m2 stops
£461British Airways
Fri, 30 Jan - Tue, 3 Feb
United Airlines Logo
06:00 - 07:55
STL
-
EDI
19h 55m2 stops
United Airlines Logo
09:25 - 17:18
EDI
-
STL
13h 53m1 stop
£463United Airlines
Fri, 30 Jan - Tue, 3 Feb
United Airlines Logo
08:05 - 07:55
STL
-
EDI
17h 50m2 stops
United Airlines Logo
09:25 - 20:58
EDI
-
STL
17h 33m2 stops
£464United Airlines
Tue, 27 Jan - Tue, 3 Feb
Virgin Atlantic Logo
17:04 - 10:30
STL
-
MAN
11h 26m1 stop
Virgin Atlantic Logo
13:30 - 20:37
MAN
-
STL
13h 07m1 stop
£465Virgin Atlantic
Sun, 4 Jan - Thu, 15 Jan
Air Canada Logo
16:05 - 06:30
STL
-
LHR
32h 25m1 stop
Air Canada Logo
18:00 - 15:29
LHR
-
STL
27h 29m1 stop
£496Air Canada
Booking Insights

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

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

What is the cheapest St. Louis to the United Kingdom flight route?

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

The cheapest ticket to the United Kingdom from St. Louis found in the last 72 hours was to London, at £841 return. The most popular route is from St. Louis (STL) to London Heathrow Airport (LHR), and the cheapest round-trip airline ticket found on this route in the last 72 hours was £841.

Can I save money by flying with a stopover from St. Louis to the United Kingdom?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £603, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to the United Kingdom, 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 the United Kingdom is November, when tickets cost £530 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is £997 and £900 respectively.

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

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

When flying from St. Louis to United Kingdom, you should consider leaving on a Thursday and avoid Mondays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Sundays and the most expensive ones on Thursdays.

How far in advance should I book a flight from St. Louis to the United Kingdom?

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 the United Kingdom, 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 a flight from St. Louis to the United Kingdom, you should book around 2 weeks before departure, which saves you about 25% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know - Cheap tickets from St. Louis to the United Kingdom

Low seasonFebruary
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (26% more expensive on average)

FAQs - booking United Kingdom flights

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

    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 the United Kingdom.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from St. Louis to the United Kingdom 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 from St. Louis to the United Kingdom?

    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 from St. Louis to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the morning, when retur flights cost £608 on average. Morning departures are around 3% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £914.

Reviews of the top 4 airlines flying from St. Louis to the United Kingdom

 
Need help choosing which airline to fly with from St. Louis to the United Kingdom? 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.
7.7
KLMOverall score based on 1432 reviews
7.8Boarding
7.2Food
7.1Entertainment
8.4Crew
7.6Comfort
Airline reviews

Terrible last row seats many seats available but no offer to move to better seat

2.0 MediocreAnonymous, Dec 2025
AMS - BUD
Read more KLM reviews

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

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

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

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

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

My seat was one of those that couldn't recline, but the problem was that it was abnormally upright, so the headrest actually made the seat concave, which was uncomfortable and hard on my lower back. I had to ball my jacket up and use it as lumbar support. goodness I had it with me.

I hope they were able to assign my preferred seat on my connecting flight. Wasn’t sure if it was language issue or they just can’t.

Flight cancelled. Major disruption to our travel. Do not use Air Canada from KC. To few flights.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

Everything you need to know for your flight from St. Louis to the United Kingdom

Information on your arrival and departure airports