£167 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 1/2. 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
London1 stop£435
Manchester
Manchester1 stop£472
Birmingham
Birmingham2 stops£563
Belfast
Belfast2 stops£493
Leeds
Leeds2 stops£644
Inverness
Inverness2 stops£399
London
London1 stop£435
Manchester
Manchester1 stop£472
Birmingham
Birmingham2 stops£563
Belfast
Belfast2 stops£493
Leeds
Leeds2 stops£644
Inverness
Inverness2 stops£399

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

Sun, 14 Dec - Fri, 9 Jan
Multiple Airlines Logo
09:54 - 10:00STL-LGW
18h 06m1 stop
Multiple Airlines Logo
14:00 - 22:33LGW-STL
14h 33m1 stop
£435Multiple Airlines
Find Deal
Mon, 8 Dec - Thu, 8 Jan
Multiple Airlines Logo
15:30 - 10:00STL-LGW
12h 30m1 stop
Multiple Airlines Logo
14:00 - 07:50LGW-STL
23h 50m1 stop
£437Multiple Airlines
Find Deal
Sat, 31 Jan - Sat, 7 Feb
Virgin Atlantic Logo
17:33 - 10:30STL-MAN
10h 57m1 stop
Virgin Atlantic Logo
13:30 - 23:40MAN-STL
16h 10m1 stop
£472Virgin Atlantic
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Sat, 31 Jan - Sat, 7 Feb
Virgin Atlantic Logo
10:19 - 10:10STL-MAN
17h 51m2 stops
Virgin Atlantic Logo
13:30 - 23:40MAN-STL
16h 10m1 stop
£475Virgin Atlantic
Find Deal
Wed, 19 Nov - Fri, 5 Dec
Air Canada Logo
06:30 - 07:10STL-LHR
18h 40m2 stops
Air Canada Logo
13:25 - 12:15LHR-STL
28h 50m2 stops
£482Air Canada
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Wed, 7 Jan - Wed, 14 Jan
KLM Logo
11:23 - 07:05STL-LHR
13h 42m1 stop
KLM Logo
06:30 - 16:39LHR-STL
16h 09m2 stops
£484KLM
Find Deal
Sat, 18 Apr - Fri, 8 May
Air Canada Logo
16:05 - 06:35STL-LHR
32h 30m1 stop
Air Canada Logo
06:50 - 18:25LHR-STL
17h 35m2 stops
£489Air Canada
Find Deal
Wed, 7 Jan - Wed, 14 Jan
British Airways Logo
14:54 - 09:15STL-LHR
12h 21m1 stop
British Airways Logo
14:45 - 23:12LHR-STL
14h 27m1 stop
£501British Airways
Find Deal
Wed, 22 Apr - Tue, 5 May
British Airways Logo
22:00 - 12:05STL-LHR
8h 05mdirect
British Airways Logo
16:25 - 19:30LHR-STL
9h 05mdirect
£506British Airways
Find Deal
Tue, 18 Nov - Tue, 25 Nov
KLM Logo
16:30 - 09:45STL-EDI
11h 15m1 stop
KLM Logo
05:50 - 17:09EDI-STL
17h 19m2 stops
£545KLM
Find Deal
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 £440 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 £440.

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.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £547 on average.

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 October, when tickets cost £562 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of return tickets is £1,012 and £927 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 4 weeks before departure, which saves you about 36% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

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

Low seasonFebruary
Cheapest flight£167
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly and prices are also 9% lower on average.
Flight from St. Louis to London Gatwick Airport

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 at night, when retur flights cost £453 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 £928.

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 1406 reviews
7.8Boarding
7.7Comfort
8.4Crew
7.3Food
7.1Entertainment
Airline reviews

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

2.0 MediocreElizabeth, Oct 2025CDG - AMS
Read more KLM reviews

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.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

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.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

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.

Boarding was so so after zone 3 was called all other zones went in

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

For goodness sake, board from the back of the plane to the front and assign overhead space. It would fix everything. Seriously.

Elderly female flight attendant was not customer friendly. There were only about 12 people on a regional jet that had about 60 seats. There were 8 exit row seats and none of them were taken. We attempted to sit in those seats and the flight attendant gave the standard " you didn't pay for those" so she would not allow us to move. What harm would that have caused ? They assigned seats to 5 of the 12 people in 2 rows, row 20 and 21. A simple friendly customer experience gesture of allowing us to sit in exit rows would have gone a long way in me having a very favorable impression on Air Canada. After that I have very poor impression of Air Canada and will not fly with them when I can avoid it.

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.

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

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Economy seats felt more cramped than other flights we have taken.7 hr, painful sitting hours 6 and 7. Web site difficult to deal with. Originally put in for 1 special meal due to type 2. Meal was awful. Tried to change selection to standard for return flight, on app and website, unable to complete that action.

I was sleeping during dinner service, no one bothered to offer meal later, I remained hungry….until I got a morning sandwich!

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

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

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