£135 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 9/2. 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£454
Manchester
Manchester2 stops£467
Birmingham
Birmingham2 stops£481
Belfast
Belfast2 stops£461
Leeds
Leeds2 stops£579
Inverness
Inverness2 stops£463
London
London1 stop£454
Manchester
Manchester2 stops£467
Birmingham
Birmingham2 stops£481
Belfast
Belfast2 stops£461
Leeds
Leeds2 stops£579
Inverness
Inverness2 stops£463

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

Wed, 29 Apr - Tue, 19 May
British Airways Logo
12:11 - 11:55
STL
-
EDI
17h 44m
2 stops
British Airways Logo
11:25 - 19:27
EDI
-
STL
14h 02m
1 stop
£450British Airways
Mon, 13 Apr - Mon, 20 Apr
British Airways Logo
12:11 - 10:05
STL
-
GLA
15h 54m
2 stops
British Airways Logo
15:35 - 19:30
GLA
-
STL
33h 55m
1 stop
£452British Airways
Mon, 30 Mar - Wed, 8 Apr
United Airlines Logo
08:30 - 10:35
STL
-
EDI
20h 05m
1 stop
United Airlines Logo
09:00 - 20:54
EDI
-
STL
41h 54m
2 stops
£453United Airlines
Wed, 25 Feb - Wed, 4 Mar
Multiple Airlines Logo
16:05 - 08:30
STL
-
LHR
10h 25m
1 stop
Multiple Airlines Logo
06:30 - 13:55
LHR
-
STL
13h 25m
1 stop
£454Multiple Airlines
Mon, 2 Mar - Wed, 25 Mar
Delta Logo
06:35 - 10:40
STL
-
EDI
22h 05m
2 stops
Delta Logo
10:45 - 20:43
EDI
-
STL
14h 58m
1 stop
£454Delta
Fri, 1 May - Sun, 3 May
Multiple Airlines Logo
13:00 - 06:30
STL
-
LHR
11h 30m
1 stop
Multiple Airlines Logo
06:30 - 13:25
LHR
-
STL
12h 55m
1 stop
£455Multiple Airlines
Mon, 23 Feb - Wed, 4 Mar
Virgin Atlantic Logo
18:47 - 11:40
STL
-
LHR
10h 53m
1 stop
Virgin Atlantic Logo
10:00 - 20:43
LHR
-
STL
16h 43m
2 stops
£461Virgin Atlantic
Thu, 26 Feb - Thu, 5 Mar
American Airlines Logo
14:00 - 10:20
STL
-
BHD
14h 20m
2 stops
American Airlines Logo
09:05 - 21:12
BHD
-
STL
18h 07m
2 stops
£461American Airlines
Wed, 25 Feb - Sun, 1 Mar
United Airlines Logo
08:17 - 10:20
STL
-
MAN
20h 03m
2 stops
United Airlines Logo
06:00 - 13:55
MAN
-
STL
13h 55m
1 stop
£468United Airlines
Fri, 27 Feb - Fri, 6 Mar
American Airlines Logo
06:00 - 07:30
STL
-
LGW
19h 30m
2 stops
American Airlines Logo
11:20 - 23:35
LGW
-
STL
18h 15m
2 stops
£497American Airlines
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 £426 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 £426.

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 £584, 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 October, when tickets cost £513 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is £954 and £869 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 Wednesday and avoid Sundays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Saturdays and the most expensive ones on Fridays.

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 18% 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 seasonJanuary
Cheapest flight£135
Best time to beat the crowds (3% 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 £778 on average. The most expensive time of day to fly to the United Kingdom is generally at night, which is peak travel time and where the average cost of a ticket is £778.

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.
7.5
Virgin AtlanticOverall score based on 678 reviews
6.9Food
7.6Entertainment
7.7Boarding
7.3Comfort
8.2Crew
Airline reviews

Food has been disappointing in both legs of flight to india

10.0 ExcellentRanj, Nov 2025
DEL - LHR
Read more Virgin Atlantic reviews

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.

My flight to London from Philadelphia was cancelled due to weather.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

No enough space plus only allowing one laggage instead of two like other airlines.

Qatar airways ,boarding arrangements at Hamid international airport could been better

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

I liked the quiet airport and no queue. I don't like that when booking it is not clear that there is teared economy, that you have to pay extra for choosing a seat and for your luggage both ways. We didn't find this out until checking in. It turned out not very economical.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

The airline was not clear about a new departure time so we got to the airport early anyway. The flight left early which was great because of weather. The check in process was very easy and staff were friendly and helpful. The crew was great and our flight was very good.

Awful it always is unfortunately is the only way to fly direct to london

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

Boarding was poor. All groups called immediately one after the other resulting in a long queue in the jetty/jet bridge. Seats were very hard and and did not recline on a 4.5 hour flight. No food was available. Plane was cold. There was no entertainment.

The cramped seats are cruel and unusual punishment and may violate the Geneva code.

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.

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

Information on your arrival and departure airports