Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

LON - STL

$269 Find cheap flights from London to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to St. Louis departing on 10/8. 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
0 bags
Sat 6/15
Sat 6/22

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 42,211,976 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from London to St. Louis (LON-STL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to St. Louis 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 and deals for you by selecting your travel dates.
Choose your dates
8:40 pm - 2:23 pmLGW-STL
23h 43m2 stops
6:55 pm - 10:00 amSTL-LGW
33h 05m1 stop
Mon, Jun 10 - Sun, Jun 16
8:40 pm - 2:23 pmLGW-STL
23h 43m2 stops
11:34 am - 10:00 amSTL-LGW
16h 26m1 stop
Mon, Jun 17 - Sat, Jun 22
2:00 pm - 10:14 pmLGW-STL
14h 14m1 stop
7:48 pm - 10:00 amSTL-LGW
32h 12m1 stop
Wed, Sep 4 - Thu, Sep 26
7:25 am - 5:11 pmLHR-STL
15h 46m2 stops
11:09 am - 5:55 amSTL-LHR
12h 46m1 stop
$939United Airlines
Find Deal
Wed, Sep 4 - Thu, Sep 26
7:25 am - 5:11 pmLHR-STL
15h 46m2 stops
11:09 am - 7:15 amSTL-LHR
14h 06m2 stops
$943United Airlines
Find Deal
Wed, Sep 4 - Thu, Sep 26
12:15 pm - 7:29 pmLHR-STL
13h 14m1 stop
3:27 pm - 12:10 pmSTL-LHR
14h 43m1 stop
$1,043American Airlines
Find Deal
Wed, Jun 19 - Thu, Jun 27
8:30 am - 3:41 pmLHR-STL
13h 11m1 stop
5:30 pm - 11:45 amSTL-LHR
12h 15m1 stop
$1,185Lufthansa
Find Deal
Tue, Jun 11 - Tue, Jul 2
10:40 am - 8:30 amLGW-STL
27h 50m2 stops
9:20 am - 8:10 amSTL-LGW
16h 50m2 stops
$1,201American Airlines
Find Deal
Thu, Jul 11 - Thu, Jul 25
6:30 am - 1:30 pmLHR-STL
13h 00m1 stop
5:30 pm - 11:45 amSTL-LHR
12h 15m1 stop
$1,209Lufthansa
Find Deal
Fri, Jun 7 - Mon, Jul 1
8:30 am - 8:59 pmLCY-STL
18h 29m2 stops
12:38 pm - 6:25 pmSTL-LCY
23h 47m2 stops
$1,883British Airways
Find Deal
Tue, Aug 13 - Mon, Sep 2

Flights from London to St. Louis - Travel Insights & Trends

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

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

The average price of all flights from London to St. Louis clicked on KAYAK for each day over the last 12 months.
When flying from London to St. Louis, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to London, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London to St. Louis, 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 London to St. Louis is November, where tickets cost $635 on average. On the other hand, the most expensive months are August and July, where the average cost of tickets is $1,032 and $955 respectively.

How far in advance should I book a flight from London to St. Louis?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London to St. Louis, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 27 days before departure.

Which airlines provide the cheapest flights from London to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on British Airways ($934) and Turkish Airlines ($1,088). The cheapest round-trip tickets were found on Finnair ($719) and United Airlines ($939).

Good to know

Low season

March

High season

May

Cheapest flight

$269
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from London Gatwick Airport to St. Louis

When to book flights from London to St. Louis

Are your dates flexible? Find out the best times to travel from London to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to St. Louis

  • Are there fast track facilities at London Airports?

    You can speed up your journey through London Airports using the fast track system. At Heathrow Airport (LHR), fast-track passes cost about £12.50, while at Gatwick Airport (LGW), they cost about £5. Both fast-track services help you skip through security, allowing you more time to enjoy the departure lounge.

  • How can I get from St Louis Airport (STL) to the city centre?

    Getting to the city centre from St Louis Airport (STL) is easy, with a few transport options available. The MLR Red Line to Lambert East TRML Metrolink Station is a low-cost choice. The Red Line takes about 29min and has 12 stops. However, if you want to get to the city quicker, you can get a taxi from the front of the terminal, which takes around 19min.

  • Are there hotels at London Airport?

    If your flight is early in the morning, you can ensure you’re not in a rush by getting a hotel the night before. For example, at Heathrow Airport, you can go to the Ibis London Heathrow Airport, whereas at Gatwick Airport, you can go to Hilton London Gatwick Airport. The hotels are only a short walk to the terminal on the morning of your flight.

  • Can I use a currency exchange at St. Louis Airport?

    When you land at St. Louis Airport, you can use the Banking and Foreign Currency Exchange to convert your Pound Sterling to US Dollar. The currency exchange is in Terminal 1 on the lower level close to the Gate C Security checkpoint.

  • What is the cheapest flight from London to St. Louis?

    In the last 3 days, the lowest price for a flight from London to St. Louis was $269 for a one-way ticket and $615 for a round-trip.

  • Do I need a passport to fly between London and St. Louis?

    A passport is required to fly from London to St. Louis.

  • Which airports will I be using when flying from London to St. Louis?

    When flying out of London you will be using one of these airports: London Gatwick or London Heathrow. You will be landing at Lambert-St Louis.

  • Which aircraft models fly most regularly from London to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London to St. Louis?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between London and St. Louis, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from London to St. Louis, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from London to St. Louis are United Airlines and American Airlines. With an average price for the route of $1,093 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,196 and an overall rating of 7.3.

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

    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 London to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from London 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 London to St. Louis?

    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 to St. Louis with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to St. Louis?

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

See more FAQs

Top tips for finding a cheap flight from London to St. Louis

  • If you’re flying from London Airports, you can relax in an airport lounge before taking off. Most flights on this route depart from Heathrow Airport (LHR), and the Club Aspire Lounge in Terminal 5 is a good option for about £40. Those flying from Gatwick Airport (LGW) can enjoy the Plaza Premium Lounge in the North Terminal for around £28. Both lounges offer food, drink and complimentary wi-fi.
  • As several airports operate the route from London Airports to St. Louis, you can pick where you depart from based on convenience. For example, if you’re starting your journey from the southwest or Midlands, Heathrow is a great airport. On the other hand, Gatwick might be the easiest airport to reach if you’re in the south of the UK.
  • Once you’ve touched down at St. Louis Airport (STL), travelling to nearby places is easy. For example, you can drive to Columbia in about 1h 35min, Springfield in around 1h 30min or Chesterfield in approximately 20min.
  • With London's excellent transport system, you will find it easy to travel to any of London Airports for your flight. If your flight departs from Heathrow Airport, you can take the Heathrow Express from London Paddington Train Station in approximately 15min. For those departing from Gatwick Airport, there is the Gatwick Express that leaves from London Victoria train station and takes around 30min.
  • If you have a disability and you're flying from London Airports, you can request help upon arrival at the terminal. However, we suggest you call your airline at least 48h before take-off so that they can arrange for suitable assistance.
See more tips

Top 4 airlines serving from London to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from London to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to St. Louis? 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
United AirlinesOverall score based on 10946 reviews
7.7Boarding
6.7Food
8.1Crew
7.2Comfort
7.1Entertainment
Airline reviews

We enjoyed that we boarded and took off on time. We didn’t like that our connection flight was a twenty minute walk through the airport with only one hour in between flights.

8.0 ExcellentAnonymous, May 2024YYZ - IAH
Read more about United Airlines reviews

We enjoyed that we boarded and took off on time. We didn’t like that our connection flight was a twenty minute walk through the airport with only one hour in between flights.

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Boarding was terrible. My wife uses a wheel chair and she was in an incredibly hot closed metal cargo box for close to 20 minutes before getting on board

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

It was okay, no wifi or entertainment real disappointment. Staff onboard not very friendly.

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

It started with multiple delays, cancellations, re booking, 5 hour lay over and finally on a plane from Chicago to Pittsburgh. Gates, times, etc were changed multiply times. Once on the plane, staff was fine, but built in tv did not work and could not even turn it off. Light at eye level the entire trip, so sleeping was near impossible. No snacks or drinks given.

Flight got delayed due to a technical issue, but they were quick to find an alternative airplane.

Seriously, not displaying departure gate until very last minute is awful. Specially when you have to take an elevator and then transport to go to the sub-terminal. That’s awful in such a busy airport as Heathrow. And I cannot choose seat on this flight because it’s run by British Airways, even entering locator code.

Somehow I got “offloaded” even though I had my boarding pass and was in transit Food is horrible Staff were nice and cheerful No headphones were provided on 11 hours flight

The staff were very helpful with lots of refreshments on offer. The toilets were clean. The seats were comfortable and entertainment was good. No complaints, it was excellent.

The main flight was OK but the second flight was chaotic with delays

amazing! they were so kind and allowed us to sit on empty seats so we could stretch our legs and sleep good. Food is amazing as well plus dessert in the middle of the flight!

All the British airways staff were very helpful and friendly. Every thing was very smooth running from checking in boarding and arriving 40 minutes early. Which is a brilliant start to your holiday.

Overall it was good but not great. The aircraft was an old and seats didn’t recline in business class unless you kept playing around with it.

No nice at all, delayed and I lost the connection over xmas

Food was terrible. Flight attendants OK. Only saw them at food service. Other than that they paid no attention to the passengers at all.

We liked the direct flight from Frankfurt to Orlando, however, it was a little confusing as I thought I was traveling with Lufthansa from Izmir- Frankfurt-Orlando. We were not able to check in online twenty-four hours before the flight from Izmir. One lady in our group wanted to check two suitcases in Izmir, but was not allowed to do so. She was allowed to take the extra bag into the cablin. Others in our group were able to check two bags. In Frankfurt several in our group were given stand-by boarding tickets, which worried them. Everyone eventually was allowed to board, but it caused them to worry. I didn't have any of those problem.

Boarding, comfort, food/drinks, entertainment and most of all an extremely courteous and friendly group of flight attendants made my 12 hour flight an absolute joy!

The bad part was 2 hour delay and we were seating in the airplane it was getting hot and uncomfortable But after they fixed the problem everything went so smooth Crew were amazing very nice polite and caring

Touchscreens do not work. WiFi did not work. Food is possibly the worst on any European airline. Drinks came by only four times on a cross-Atlantic. The plane was two hours late because—it was announced—Lufthansa didn't have enough large aircraft in their fleet to accommodate an on-time flight.

It was freezing in the airplane. Everyone was wearing everything they had with them. The crew acknowledged it was cold, but did nothing about it

The flight attendants were superb and the service was outstanding. Some passengers with small children were very rude and inconsiderate, kids were constantly crying and some were running around the aisle unsupervised.

Terrible. There was a rattling noise the whole flight. The internet didn't work after I paid. Boarding is very disorganized.

Horrible flight attendant in back of economy that screamed at me, have already reported to United. Horrible food - for Gluten free, why would you assume the person is vegetarian? I was served some kind of horrible curry bean paste and multiple cold rolls and soggy vegetables with no seasoning... um no!

The crew member put her luggage and boxes behind my seat so I was able to recline while the passenger in front of me did for 8 hours. My knees were forced against the seat for hours :(. Dude sitting next to me hasn't showered in weeks so I almost threw up.

Sorry my last review for prg to fra was for this flight. My prg to fra flight was fine but my second flight back to Washington DC was with a slow awful crew who wouldn’t come in a timely manner to take trash and take trash before serving coffee tea and was shoving other people’s bottles of water on me when we were not traveling together

Boarding good. Seats uncomfortable when lie flat. Food was awful. Tasted stale and chicken was dry. No live tv or flight map. Had to pay for internet.

Poor technical details on this plane. 1) There was no WiFi on an 8 hour long-haul flight. So no work could be done. That's below the standard expected for airlines these days. 2) The power outlet at my seat was busted and not working. 3) The headphone jack was loose and I had to keep adjusting my headphones to get good reception, or when it slipped out. - The flight was delayed to due mechanics. Sometimes this can't be avoided, I understand, and it's a big inconvenience to arrive that much later when traveling across time zones (then arriving at 4am from the prior time zone). - Also unique to this flight, the northern lights were visible on the right side of the aircraft, but I only found out after we landed (b/c again no wifi). I understand there are considerations about people being out of their seats to look, but I feel extremely disappointed and resentful that I wasn't told so that I could have a chance to look at this probably once-in-a-lifetime cosmic event from a view in the sky. - Flight crew was otherwise friendly and helpful.

I would have preferred something lighter for the second meal. Maybe a small sandwich .

They cancelled our flight the morning of departure at 4:30am.

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

The crew was very attentive and kept busy serving a variety of treats!

Offered vegetable curry when it was actually tofu which I don’t care for.

The flight was good the crew excellent…but take off delayed three hours!!!

Both mine and my husband's chairs were broken. Also it took 2 hours to get our bags after our flight which was wild.

perhaps eye contact with the cabin crew, instead of abruptness and an impatience to serve.

Book cheap flights from London to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to St. Louis found on KAYAK in the last 72 hours.
10/8Tue
1 stop
28h 46mLGW-STL
$269
5/22Wed
1 stop
34h 40mLGW-STL
$341
5/21Tue
2 stopsBritish Airways
29h 11mLHR-STL
$934
9/15Sun
2 stopsTurkish Airlines
55h 49mLGW-STL
$1,088
10/30Wed
2 stopsTurkish Airlines
54h 43mLGW-STL
$1,111
5/22Wed
1 stopBritish Airways
12h 12mLHR-STL
$1,214
10/30Wed
1 stopUnited Airlines
13h 25mLHR-STL
$1,674
10/8Tue
1 stopLufthansa
25h 00mLHR-STL
$1,704
10/29Tue
1 stopLufthansa
33h 55mLCY-STL
$1,706
9/15Sun
1 stopUnited Airlines
13h 00mLHR-STL
$1,727

Search by stops

Search by airline

Search by price

Last minute flights from London to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to St. Louis that are departing in the next 10 days.
5/20Mon
multi-stopFinnair
13h 28mLHR-STL
5/25Sat
multi-stopFinnair
18h 00mSTL-LHR
$892
5/20Mon
multi-stopFinnair
14h 42mLHR-STL
5/25Sat
multi-stopFinnair
17h 30mSTL-LHR
$1,035
5/20Mon
multi-stop
37h 12mLGW-STL
5/25Sat
multi-stop
16h 21mSTL-LGW
$1,234
5/20Mon
multi-stopFinnair
22h 08mLHR-STL
5/25Sat
multi-stopFinnair
14h 39mSTL-LHR
$1,265
5/20Mon
multi-stop
34h 33mLGW-STL
5/25Sat
multi-stop
34h 04mSTL-LGW
$1,347
5/20Mon
multi-stopAmerican Airlines
13h 31mLHR-STL
5/25Sat
multi-stopAmerican Airlines
25h 10mSTL-LHR
$1,658
5/20Mon
multi-stopAmerican Airlines
13h 28mLHR-STL
5/25Sat
multi-stopAmerican Airlines
25h 10mSTL-LHR
$1,667
5/20Mon
multi-stopKLM
19h 40mLCY-STL
5/25Sat
multi-stopKLM
18h 13mSTL-LCY
$1,669
5/20Mon
multi-stopAustrian Airlines
41h 54mLHR-STL
5/25Sat
multi-stopAustrian Airlines
14h 52mSTL-LHR
$2,066
5/20Mon
multi-stopAustrian Airlines
32h 24mLHR-STL
5/25Sat
multi-stopAustrian Airlines
27h 51mSTL-LHR
$2,077

Search by stops

Search by airline

Search by price

Flights to St. Louis

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - London

Cabin classes: