$272 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 3/28. 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 round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$689
Edinburgh
Edinburgh2 stops$765
Manchester
Manchester2 stops$818
Birmingham
Birmingham2 stops$849
Belfast
Belfast1 stop$1,217
Inverness
Inverness2 stops$686
Aberdeen
Aberdeen2 stops$840
Leeds
Leeds2 stops$862
London
London1 stop$689
Edinburgh
Edinburgh2 stops$765
Manchester
Manchester2 stops$818
Birmingham
Birmingham2 stops$849
Belfast
Belfast1 stop$1,217
Inverness
Inverness2 stops$686
Aberdeen
Aberdeen2 stops$840
Leeds
Leeds2 stops$862

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 round-trip 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 round-trip flight deals from St. Louis to the United Kingdom

Mon, Aug 3 - Tue, Aug 18
American Airlines Logo
9:24 am - 10:20 am
STL
-
INV
18h 56m
2 stops
American Airlines Logo
11:20 am - 7:30 pm
INV
-
STL
14h 10m
1 stop
$686American Airlines
Wed, Apr 1 - Wed, Apr 8
Multiple Airlines Logo
4:54 pm - 10:00 am
STL
-
LGW
35h 06m
1 stop
Multiple Airlines Logo
2:00 pm - 11:25 pm
LGW
-
STL
15h 25m
1 stop
$689Multiple Airlines
Sun, May 3 - Tue, May 12
Air Canada Logo
2:20 pm - 10:00 am
STL
-
LHR
13h 40m
2 stops
Air Canada Logo
6:50 am - 8:25 pm
LHR
-
STL
19h 35m
2 stops
$731Air Canada
Tue, Apr 28 - Tue, May 5
Air Canada Logo
4:05 pm - 11:50 am
STL
-
LHR
13h 45m
1 stop
Air Canada Logo
5:15 pm - 8:25 pm
LHR
-
STL
33h 10m
2 stops
$739Air Canada
Wed, Aug 5 - Tue, Aug 11
British Airways Logo
9:45 am - 10:30 am
STL
-
GLA
18h 45m
2 stops
British Airways Logo
7:30 pm - 11:42 pm
GLA
-
STL
34h 12m
2 stops
$752British Airways
Sun, Aug 23 - Thu, Aug 27
United Airlines Logo
2:40 pm - 7:20 am
STL
-
EDI
10h 40m
1 stop
United Airlines Logo
9:00 am - 12:13 pm
EDI
-
STL
33h 13m
2 stops
$790United Airlines
Sun, Aug 23 - Thu, Aug 27
United Airlines Logo
12:10 pm - 7:40 am
STL
-
EDI
13h 30m
1 stop
United Airlines Logo
9:15 am - 6:42 pm
EDI
-
STL
15h 27m
1 stop
$793United Airlines
Mon, Jul 27 - Wed, Aug 26
British Airways Logo
11:18 am - 7:30 am
STL
-
EDI
14h 12m
1 stop
British Airways Logo
11:25 am - 11:42 pm
EDI
-
STL
18h 17m
1 stop
$797British Airways
Wed, Apr 22 - Wed, Apr 29
Delta Logo
1:46 pm - 8:50 am
STL
-
LCY
37h 04m
2 stops
Delta Logo
9:20 am - 11:13 pm
LCY
-
STL
19h 53m
2 stops
$807Delta
Wed, Apr 22 - Thu, Apr 30
Delta Logo
10:50 am - 8:50 am
STL
-
LCY
40h 00m
2 stops
Delta Logo
10:00 am - 11:13 pm
LCY
-
STL
43h 13m
2 stops
$808Delta
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 $648 round-trip. 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 $648.

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

The average price for all round-trip flights from St. Louis to the United Kingdom depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United Kingdom is generally at night, when round-trip flights cost $858 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 $858.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $763, 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 January, when tickets cost $672 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,310 and $1,134 respectively.

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 the flight from St. Louis to the United Kingdom, you should book around 2 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$272
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 8% 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 travelers 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 round-trip 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.

Reviews of the top 5 airlines serving 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.
7.9
DeltaOverall score based on 8292 reviews
7.2Food
8.5Crew
7.8Entertainment
7.9Comfort
8.1Boarding
Airline reviews

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

2.0 MediocreSusan, Mar 2026
JAX - ATL
Read more Delta reviews

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

With Aeromexico it ended up good but with Delta it was bad because we did everything through Delta... Showed up at the Delta terminal... It was the wrong place! Nothing ever told us to go to the Aeromexico terminal. It said "in partnership with Aeromexico" but I was never instructed to check in with them or go to their terminal. We had to haul @$$ running through the airport and almost didn't make it thanks to this poor communication. 👎🏽

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

It’s always a great time flying with united airlines.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

Good crew and flight was on time. It’s a small plane with limited overhead luggage space. They said the overhead space was full and I had to check my bag. There was still space when I got on. Waiting for my checked luggage added 30 minutes to my trip. Not the end of the world but also not great.

I very rarely fly American and my experience today reenforces that is the correct decision. While the staff were all very courteous, our flight was first thing in the morning so there was no reason to be delayed, yet appropriate maintenance checks weren’t completed prior to our flight so we were delayed multiple times. Not a great showing, American Airlines.

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.

Departed Palm Springs over an hour late because there’s only one gate, and it has always delayed by the arriving and departing flight to Toronto and the arriving flight from Vancouver.

I checked a bag and there was only one agent to assist all customers with any issues.

I want to thank Carlos at the Miami AC desk - he was amazing and went over and above to help us out. Thank you Carlos and all the best to you!!! You made our faith in AC feel great! Sincerely, David Cubitt

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

Extremely disappointing. My original Denver–Vancouver–Bangkok itinerary was cancelled due to a crewing issue. I was not proactively supported and had to drive back home after already reaching the airport. Communication was poor throughout, and attempts to contact customer service resulted in being on hold for nearly three hours without reaching anyone. Instead of being rebooked on the same direct routing the following day, I was rerouted onto a much longer itinerary via multiple cities and airlines, which resulted in arriving approximately 30 hours later than scheduled. At Denver airport, there was no visible Air Canada representative available to properly assist. Ground staff offered no real support beyond directing passengers to a phone number. There was no clear communication, no ownership, and no meaningful customer care during a major disruption. The final journey involved three flights instead of the original two, significantly increasing travel time and stress. Overall, the handling of the cancellation and lack of customer support was unacceptable. What could have been better? Clear communication during the cancellation Accessible customer service (phone support that actually answers) Proper in-person assistance at the airport Rebooking onto a comparable routing rather than a significantly longer one

Great setup on both flights except the last flight we got condensed dripping all over me in the last 20 mins of the flight

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

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 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.

Very please with the seating that the Kayak staff booked for us!

Worth every penny to upgrade to BC. Treated and felt more like First Class

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

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.

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

Information on your arrival and departure airports