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LON - STL

$225 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 9/9. 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
Fri 7/12
Fri 7/19

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 44,148,666 times on KAYAK, and here is why:

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

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

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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
2:00 pm - 7:02 amLGW-STL
23h 02m1 stop
7:57 am - 10:00 amSTL-LGW
20h 03m1 stop
Thu, Sep 5 - Wed, Sep 11
2:00 pm - 7:02 amLGW-STL
23h 02m1 stop
7:57 am - 10:00 amSTL-LGW
20h 03m1 stop
Sat, Sep 7 - Sat, Sep 28
2:00 pm - 7:22 amLGW-STL
23h 22m1 stop
7:57 am - 10:00 amSTL-LGW
20h 03m1 stop
Tue, Aug 27 - Sat, Sep 14
11:45 am - 9:31 pmLHR-STL
15h 46m2 stops
6:00 am - 10:40 pmSTL-LHR
10h 40m1 stop
$1,004American Airlines
Find Deal
Tue, Nov 19 - Tue, Nov 26
6:30 am - 1:55 pmLHR-STL
13h 25m1 stop
12:58 pm - 5:55 amSTL-LHR
10h 57m1 stop
$1,014Lufthansa
Find Deal
Wed, Nov 20 - Tue, Nov 26
12:05 pm - 7:55 pmLHR-STL
13h 50m1 stop
1:27 pm - 5:55 amSTL-LHR
10h 28m1 stop
$1,027Lufthansa
Find Deal
Tue, Nov 19 - Tue, Jan 14
4:00 pm - 11:27 pmLHR-STL
13h 27m1 stop
5:40 pm - 11:05 amSTL-LHR
11h 25m1 stop
$1,037United Airlines
Find Deal
Tue, Nov 19 - Wed, Jan 15
9:30 am - 7:30 pmLHR-STL
16h 00m2 stops
2:38 pm - 9:30 amSTL-LHR
12h 52m2 stops
$1,169American Airlines
Find Deal
Mon, Jul 8 - Mon, Oct 7
2:05 pm - 9:05 pmLHR-STL
13h 00m1 stop
1:38 pm - 9:40 amSTL-LHR
15h 02m1 stop
$1,176United Airlines
Find Deal
Mon, Oct 14 - Thu, Oct 31
8:30 am - 8:59 pmLCY-STL
18h 29m2 stops
12:46 pm - 6:25 pmSTL-LCY
23h 39m2 stops
$1,387British Airways
Find Deal
Tue, Aug 27 - Sat, Sep 14

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 Tuesdays.

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 $1,028 and $962 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 Finnair ($820) and WestJet ($1,035). The cheapest round-trip tickets were found on Finnair ($699) and American Airlines ($1,004).

Good to know

Low season

March

High season

May

Cheapest flight

$225
Best time to beat the crowds with an average 9% 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 $225 for a one-way ticket and $471 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 $973 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 10000 reviews
7.1Entertainment
8.1Crew
7.7Boarding
6.7Food
7.2Comfort
Airline reviews

The entertainment wasn’t playing in the app or online.

4.0 OkayJohn, Jun 2024SFO - DCA
Read more about United Airlines reviews

The entertainment wasn’t playing in the app or online.

Connecting flights were poor,especially in Naples.our Lufthansa air bus was a joke.way too small for that long of a flight.no room at all.couldn’t even get out of the seats to move around or go to the bathrooms.we thought we were getting an actual air bus,double decker.i will never fly that long in a plane like that again.kind of misleading to call it an air bus.we actually had more room on our buses that we used.

It is a modern tragedy that any airline expects you to travel for 14 hours in such discomfort and that the only way to add comfort is exorbitant prices. I was in pain by the time we landed. Shameful.

Original plane sidelined. Had to wait an hour for replacement.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

They have trouble to keep their flights in schedule. Seems not having enough staff to provide appropriate customer service. Lacking real agents on site to help customers. Have to use QR code/web site/call to be able to talk to real person can help you - and you may have to punch though series of options first, then hold until someone assist you. Similar for baggage claim, no real agent onsite helping if you missing luggage, not like other airline next to UA desk having staff there even after midnight to assist customers.

United is my favorite and I always try to fly United. I feel like this crew didn’t mesh well together.

Our flight was delayed three times. It took us 17 hours to get home.

Good with British Airways - terrible with American Airlines! Stood at gate for “mechanical problem” - plane delayed. Had to check my personal belonging with 5 empty bins available in plane, desk staff rude!!! Toilet not working- asked “to use working toilet sparingly - it may overflow in cabin!”

The flight was sequentially delayed until it reached two hours. Apparently one pilot failed to show up.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

As no headphones/ ear pieces in back of seat for entertainment system, would have been to been offered rather than asking & waiting a long time. I know we are in economy but cost of ticket was high.

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.

Flight delayed, boarding time kept changing, not good. Nee firm information given each time.

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

United delayed the flight to assist customers to make the connection. The Ohara customs area was overwhelm which created an issue for customers trying to make the Little Rock connection. The delayed allow several customers to make the final flight into Little Rock.

The trip was good except for the delay that caused a connection issue in Chicago.

Terrible. Missed our flight to Newark as well as our flight to London. Complete disaster

The flight was wondering, especially the special assistance from airplane to airplane!

They canceled our flight last minute and we had to get another flight with twice the cost

Captain waited 45 minutes for late passengers boarding from Washington DC to Munich which was nice for them but caused our luggage to miss boarding our connection on to Bucharest. We then did not receive our luggage for about 48 hours after landing which was very inconvenient for our travel.

Boarding process non existent. No WiFi. No entertainment. Cramped old plane. Worst Kosher meal ever presented on a flight.

The worst experience of my life and I have been flying for 33 years

We were very upset when we checked in for our flight to be charged 208,00 euro for luggage fees when the site clearly states we are authorized one checked bag each and one carry-on. We have never experienced anything like this with Lufthansa and are very disappointed. We should be reimbursed this erroneous charge. I can forward all receipts once I am able to scan the them.

Poor, we had 1 hour to grab our checked luggage, go through customs, recheck bags and run across terminals to make our United flight. Poorly planned connections.

Every host and pilot were very professional. My next flight would be upgraded from economy to the next group.

I asked for a window seat and when I got on the plane 24A did not have a window so was very not happy, but good and entertainment was good and the staff was very good, so the only complaint was the seating.

My seat was in a good row. In our section it was the first row. But it was difficult tooperate seat entertainment features > table, screen, even though I often fly.

My worst flying experience so far. This flight was delayed a total of 42 hours and diverted to New York before it was finally cancelled. It was delayed 4 and a half hours in London. As we were scanning our boarding passes at the gate they advised that the flight was being diverted to JFK since the delays caused us to missed the open hours for Charlotte international customs and immigration. We were assured multiple times by airport personnel, flight attendants, and the Pilot that we would land at JFK go through customs and immigration and then reboard the plane to fly to Charlotte in the same night. When we landed in New York the pilot advised us as we were retrieving our carry on luggage that we were delayed till 10am the next morning and to see guest services to get a room for the night. During this time I had to purchase a room for a family member in Charlotte which drove over 4 and a half hours to pick us up from Charlotte. This could have been avoided if American Airlines had been up front about the delay. Then after standing in line for over 2 and a half hours at guest services we were taken by taxi to a hotel 30 minutes out of the way. Luckily I looked for other flights that night and found one at 8 am to get on. The initial flight which we were scheduled to fly to charlotte in was delayed 12 more times and was finally cancelled 42 hours after it was supposed to land. I am unaware of what happened to the guest that were supposed to fly on the flight after we were placed on another flight but 42 hours in delays for a direct flight is absolutely ridiculous.

The boarding to Gatwick was a breeze but the boarding from Gatwick was a nightmare. The onboard service to Gatwick had a lot to be desired but the onboard sevice from Gatwick was amazing ! Very nice,friendly and funny ! Would I recommend BA to anyone.? ! Yes I would!

Really quick check in and security at Heathrow Terminal 5. Staff on board were lovely and very friendly. Could have provided a few more drinks on the flight but they were available at the back of the plane.

Flight delayed an hour due to plane maintenance issues after getting in line to board. Issue was plane galley ovens which eliminated hot meals for overseas flight. Cold selections were limited due to availability. Drink and meal service (already an hour delayed) was very slow. Upon arrival in Nashville, had to sit at gate for about 15 minutes before disembarking with no explanation. Local police then boarded plane as we were disembarking so maybe that was the issue.

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 .

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.
9/9Mon
1 stop
23h 07mLGW-STL
$225
9/9Mon
2 stops
32h 20mLGW-STL
$239
10/31Thu
1 stop
22h 07mLGW-STL
$337
9/9Mon
1 stopFinnair
12h 04mLHR-STL
$820
10/31Thu
2 stopsWestJet
24h 43mLHR-STL
$1,035
7/11Thu
2 stopsLufthansa
20h 47mLCY-STL
$1,101
7/22Mon
2 stopsBritish Airways
30h 14mLHR-STL
$1,108
8/9Fri
1 stopFinnair
20h 07mLHR-STL
$1,242
9/15Sun
1 stopLufthansa
13h 19mLHR-STL
$1,248
9/9Mon
2 stopsBritish Airways
18h 23mLCY-STL
$1,699

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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.
6/14Fri
multi-stopFinnair
14h 26mLHR-STL
6/18Tue
multi-stopFinnair
10h 10mSTL-LHR
$877
6/17Mon
multi-stop
23h 07mLGW-STL
6/21Fri
multi-stop
28h 50mSTL-LGW
$882
6/17Mon
multi-stopUnited Airlines
11h 44mLHR-STL
6/24Mon
multi-stopUnited Airlines
10h 45mSTL-LHR
$1,618
6/17Mon
multi-stopLufthansa
15h 11mLHR-STL
6/25Tue
multi-stopLufthansa
12h 14mSTL-LHR
$1,625
6/17Mon
multi-stopAir Canada
13h 00mLHR-STL
6/24Mon
multi-stopAir Canada
13h 30mSTL-LHR
$1,634
6/14Fri
multi-stopUnited Airlines
13h 00mLHR-STL
6/18Tue
multi-stopUnited Airlines
21h 15mSTL-LHR
$1,643
6/16Sun
multi-stopLufthansa
13h 00mLHR-STL
6/25Tue
multi-stopLufthansa
12h 14mSTL-LHR
$1,658
6/16Sun
multi-stopDelta
14h 54mLGW-STL
6/23Sun
multi-stopDelta
14h 50mSTL-LGW
$1,679
6/15Sat
multi-stopAir Canada
13h 56mLHR-STL
6/21Fri
multi-stopAir Canada
10h 30mSTL-LHR
$1,717
6/17Mon
multi-stopDelta
17h 43mLGW-STL
6/21Fri
multi-stopDelta
16h 35mSTL-LGW
$2,650

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Flights to St. Louis

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - London

Cabin classes: