£229 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 9/8. 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£615
Manchester
Manchester2 stops£580
Birmingham
Birmingham2 stops£667
Belfast
Belfast1 stop£811
Leeds
Leeds2 stops£939
Inverness
Inverness1 stop£562
London
London1 stop£615
Manchester
Manchester2 stops£580
Birmingham
Birmingham2 stops£667
Belfast
Belfast1 stop£811
Leeds
Leeds2 stops£939
Inverness
Inverness1 stop£562

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

Mon, 5 Oct - Thu, 8 Oct
Air Canada Logo
12:10 - 06:30
STL
-
MAN
36h 20m
2 stops
Air Canada Logo
06:05 - 18:41
MAN
-
STL
18h 36m
2 stops
£580Air Canada
Mon, 5 Oct - Thu, 8 Oct
Air Canada Logo
12:10 - 06:30
STL
-
MAN
36h 20m
2 stops
Air Canada Logo
06:05 - 18:41
MAN
-
STL
18h 36m
2 stops
£581Air Canada
Mon, 5 Oct - Thu, 8 Oct
Lufthansa Logo
18:49 - 17:35
STL
-
MAN
40h 46m
2 stops
Lufthansa Logo
11:05 - 13:25
MAN
-
STL
32h 20m
1 stop
£612Lufthansa
Sun, 24 May - Thu, 28 May
Multiple Airlines Logo
16:19 - 10:00
STL
-
LGW
35h 41m
1 stop
Multiple Airlines Logo
14:00 - 19:23
LGW
-
STL
35h 23m
2 stops
£615Multiple Airlines
Tue, 20 Oct - Tue, 27 Oct
Iberia Logo
21:35 - 11:35
STL
-
LHR
8h 00mdirect
Iberia Logo
07:30 - 20:08
LHR
-
STL
17h 38m
2 stops
£631Iberia
Tue, 6 Oct - Tue, 20 Oct
Iberia Logo
21:35 - 11:35
STL
-
LHR
8h 00mdirect
Iberia Logo
06:15 - 20:08
LHR
-
STL
19h 53m
2 stops
£631Iberia
Wed, 7 Oct - Thu, 15 Oct
British Airways Logo
21:35 - 11:35
STL
-
LHR
8h 00mdirect
British Airways Logo
07:50 - 20:08
LHR
-
STL
18h 18m
2 stops
£637British Airways
Wed, 7 Oct - Thu, 15 Oct
British Airways Logo
21:35 - 11:35
STL
-
LHR
8h 00mdirect
British Airways Logo
07:50 - 20:08
LHR
-
STL
18h 18m
2 stops
£637British Airways
Wed, 21 Oct - Wed, 28 Oct
Multiple Airlines Logo
21:35 - 11:35
STL
-
LHR
8h 00mdirect
Multiple Airlines Logo
06:30 - 14:55
LHR
-
STL
13h 25m
1 stop
£640Multiple Airlines
Wed, 19 Aug - Fri, 28 Aug
Lufthansa Logo
15:30 - 17:55
STL
-
LCY
20h 25m
1 stop
Lufthansa Logo
09:15 - 23:00
LCY
-
STL
19h 45m
2 stops
£760Lufthansa
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 £729 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 £729.

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 retur flights cost £790 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 £790.

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 2 stops stopover the cheapest option at £871 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 April, when tickets cost £86 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of return tickets is £537 and £426 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 Friday and avoid Tuesdays 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 Sundays.

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 1 week before departure. 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£229
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly (3% more expensive on average)
Flight from St. Louis to London Heathrow 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.

Reviews of the top 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.
7.4
Virgin AtlanticOverall score based on 688 reviews
8.1Crew
7.5Entertainment
6.9Food
7.3Comfort
7.7Boarding
Airline reviews

Seating and zone. The minor I went with didn’t even seat close to me

4.0 OkayAnonymous, Mar 2026
BOS - LIS
Read more Virgin Atlantic reviews

Seating and zone. The minor I went with didn’t even seat close to me

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

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

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

The whole experience was excellent, O can say out from Miami the best airline to travel with for any European destination. Since the ground staff to the inflight crew attention was great, service on board 10 of 10. Finally the 380 is very confortable and nice to travel.

All crew except 1 were excellent. When I asked assistance with business class seat conversion to a bed (not being familiar as never used before but have numerous times with other airlines) crew member helped very reluctantly. I should have told her that business class seat conversion is totally different in each airline such as Delta, New Zealand Air and United. Sorry it was my 1st time with America Airlines. Now I know, I won't bother asking assistance in future.

The seats in Premier Economy were very comfortable. The food was better than average. The way British Airways handled our seating was atrocious.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Overall ok. Best part has always been the sundae dessert.

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

Nice aircraft. Good crew. Delayed departure from Houston, but arrived on time in London. Main thing I don’t like about flying BA is having to transit through security in London Heathrow. A major pain!

The gate agent made me check my carry-on in Denver, even though I've traveled all over taking this case on the plane. Beware folks. Food in Premium Economy was quite good - excellent blanket! Flight attendants on the Heathrow-to-Budapest flight on 3-27-2026 were quite snappy. I got a frown when asked to unscrew the water bottle cap for me (I had a cast on my right arm). Also woke up right when they were handing out biscuits. She had given my rowmates one and was in the process of giving water when I asked for a biscuit. She scolded me and said, "You snooze, you lose". She did give me one, but I thought that comment was uncalled for.

Wish the food and overall service was better. They treat Business class passengers same as economy

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

Information on your arrival and departure airports