This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — STL
29 Nov — 6 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Lambert-St Louis are usually found in February or January, booked 21 days in advance, depart on a Friday or Wednesday and return on a Tuesday
Cheap flight deals from London to St. Louis
Enter your travel dates to find the best prices.
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Cheapest flights from London to St. Louis
Explore the most affordable flight options available from London to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.
Wed 18/1106:40 -
2 stops23h 16m
Mon 30/1114:31 -
2 stops21h 09m
Deal found 28/10£590
Tue 17/1119:30 -
2 stops32h 12m
Wed 25/1114:31 -
2 stops21h 09m
Deal found 27/10£592
Thu 26/1106:30 -
3 stops35h 55m
Thu 3/1218:13 -
2 stops30h 12m
Deal found 29/10£602
Wed 25/1111:45 -
2 stops27h 52m
Tue 1/1212:54 -
1 stop12h 26m
Deal found 27/10£611
Thu 17/1218:40 -
2 stops32h 58m
Thu 7/112:01 -
2 stops21h 59m
Deal found 27/10£619
Sun 22/1112:05 -
1 stop13h 25m
Fri 4/1215:25 -
1 stop10h 30m
Deal found 27/10£621
Thu 12/1118:40 -
2 stops33h 02m
Mon 16/1114:31 -
2 stops21h 59m
Deal found 28/10£625
Thu 26/1111:00 -
1 stop18h 59m
Wed 2/1218:13 -
2 stops39h 37m
Deal found 26/10£630
Wed 9/1219:30 -
3 stops34h 42m
Sat 12/1218:20 -
3 stops35h 00m
Deal found 27/10£632
Sun 22/1109:40 -
1 stop20h 19m
Sun 29/1118:05 -
2 stops39h 40m
Deal found 25/10£677
Thu 26/1111:00 -
1 stop18h 59m
Thu 3/1218:13 -
2 stops33h 32m
Deal found 29/10£681
Tue 1/1208:40 -
2 stops36h 46m
Mon 7/1216:05 -
2 stops19h 45m
Deal found 29/10£699
Best flights from London to St. Louis
Discover carefully curated flight deals from London to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.
Thu 12/1118:40 -
2 stops33h 02m
Mon 16/1114:31 -
2 stops21h 59m
Deal found 29/10£627
Wed 2/1209:00 -
2 stops16h 26m
Wed 9/1209:40 -
2 stops15h 00m
Deal found 29/10£670
Sun 22/1109:40 -
1 stop20h 19m
Sun 29/1118:05 -
2 stops39h 40m
Deal found 25/10£677
Sat 21/1110:00 -
2 stops17h 34m
Sat 28/1118:00 -
2 stops15h 45m
Deal found 29/10£845
Thu 3/1219:40 -
2 stops30h 18m
Mon 7/1211:37 -
2 stops25h 23m
Deal found 29/10£966
Tue 1/1217:25 -
2 stops34h 32m
Tue 8/1206:30 -
2 stops34h 05m
Deal found 29/10£970
Tue 8/1206:35 -
2 stops16h 30m
Mon 14/1208:30 -
2 stops15h 25m
Deal found 25/10£677
Wed 25/1109:50 -
1 stop20h 09m
Tue 1/1216:05 -
2 stops18h 35m
Deal found 27/10£744
Wed 2/1213:35 -
1 stop13h 48m
Tue 8/1213:17 -
1 stop11h 23m
Deal found 27/10£701
Tue 1/1215:10 -
1 stop13h 05m
Thu 10/1208:02 -
1 stop15h 53m
Deal found 26/10£702
Thu 26/1106:50 -
2 stops18h 40m
Thu 3/1209:40 -
2 stops15h 00m
Deal found 27/10£708
Tue 3/1117:25 -
2 stops34h 15m
Tue 10/1107:30 -
2 stops43h 40m
Deal found 29/10£970
Thu 5/1117:25 -
2 stops26h 20m
Fri 13/1115:40 -
3 stops35h 20m
Deal found 28/10£920
Thu 26/1106:50 -
2 stops14h 53m
Tue 1/1213:18 -
2 stops15h 32m
Deal found 26/10£709
Mon 9/1106:40 -
3 stops22h 36m
Mon 23/1113:20 -
2 stops20h 25m
Deal found 27/10£965
Mon 14/1207:50 -
1 stop17h 36m
Mon 21/1209:35 -
1 stop14h 20m
Deal found 30/10£731
Thu 26/1107:40 -
1 stop14h 03m
Sat 28/1115:15 -
1 stop10h 40m
Deal found 26/10£765
Thu 19/1111:10 -
2 stops16h 30m
Tue 1/1213:17 -
1 stop15h 33m
Deal found 29/10£772
Direct flights from London to St. Louis
Explore direct flight options from London to St. Louis based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.
Wed 31/316:25 -
Nonstop9h 05m
Wed 14/421:35 -
Nonstop8h 00m
Deal found 28/10£842
Tue 30/316:25 -
Nonstop9h 05m
Sun 4/421:40 -
Nonstop8h 00m
Deal found 28/10£955
Tue 30/316:25 -
Nonstop9h 05m
Wed 14/421:35 -
Nonstop8h 00m
Deal found 28/10£1,000
Sun 28/316:25 -
Nonstop9h 05m
Wed 14/421:35 -
Nonstop8h 00m
Deal found 28/10£1,030
Sun 28/316:25 -
Nonstop9h 05m
Sun 11/421:40 -
Nonstop8h 00m
Deal found 29/10£1,073
Sun 28/316:25 -
Nonstop9h 05m
Sun 11/421:40 -
Nonstop8h 00m
Deal found 28/10£1,078
Tue 30/316:25 -
Nonstop9h 05m
Thu 8/421:25 -
Nonstop8h 10m
Deal found 28/10£1,159
Sun 28/316:25 -
Nonstop9h 05m
Tue 13/421:35 -
Nonstop8h 00m
Deal found 28/10£1,189
Last-minute flights from London to St. Louis
Discover last-minute flight deals from London to St. Louis. Data last updated 30 October 2026 and is based on user searches.
Thu 12/1118:40 -
2 stops33h 02m
Mon 16/1114:31 -
2 stops21h 59m
Deal found 28/10£625
Tue 17/1119:30 -
2 stops32h 12m
Wed 25/1114:31 -
2 stops21h 09m
Deal found 27/10£592
Wed 18/1106:40 -
2 stops23h 16m
Mon 30/1114:31 -
2 stops21h 09m
Deal found 28/10£590
Sun 22/1112:05 -
1 stop13h 25m
Fri 4/1215:25 -
1 stop10h 30m
Deal found 27/10£621
Sun 22/1109:40 -
1 stop20h 19m
Sun 29/1118:05 -
2 stops39h 40m
Deal found 25/10£677
Mon 23/1110:50 -
2 stops35h 30m
Mon 7/1212:02 -
1 stop12h 23m
Deal found 26/10£637
Mon 23/1110:00 -
2 stops19h 59m
Mon 7/1212:02 -
3 stops21h 43m
Deal found 26/10£738
Wed 25/1111:45 -
2 stops27h 52m
Tue 1/1212:54 -
1 stop12h 26m
Deal found 27/10£611
Wed 25/1106:30 -
1 stop13h 15m
Tue 1/1213:17 -
1 stop15h 33m
Deal found 27/10£639
Thu 26/1106:30 -
3 stops35h 55m
Thu 3/1218:13 -
2 stops30h 12m
Deal found 29/10£602
Thu 26/1111:00 -
1 stop18h 59m
Wed 2/1218:13 -
2 stops39h 37m
Deal found 26/10£630
Thu 26/1111:00 -
1 stop18h 59m
Thu 3/1218:13 -
2 stops33h 32m
Deal found 29/10£681
One-way flights from London to St. Louis
Search for one-way flight options from London to St. Louis. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.
Sun 22/1109:40 -
2 stops38h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£280
Wed 25/1109:50 -
1 stop20h 09m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£281
Thu 26/1111:00 -
3 stops36h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£328
Wed 9/1215:15 -
3 stops50h 02m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£377
Fri 15/113:35 -
1 stop15h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£382
Thu 10/1208:30 -
3 stops32h 47m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£401
Thu 10/1206:00 -
3 stops35h 17m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£402
Tue 15/1206:40 -
3 stops34h 37m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/10£406
Mon 23/1116:45 -
3 stops54h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£407
Wed 25/1114:50 -
3 stops50h 13m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£411
Sat 5/1214:50 -
3 stops50h 07m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10£416
Tue 15/1210:40 -
3 stops43h 32m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/10£416
Find flight deals from London to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 October 2026.
Customise your flight search to find flights from London to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 30 October 2026.
Use the filters below to find and compare flights from London to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
Fastest return journey
LondonSt. Louis
LGW London Gatwick - STL Lambert-St Louis
LGWSTL
London Gatwick
Thu 26/11
11:00-23:59
1 stop18h 59m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£281
LondonSt. Louis
LGW London Gatwick - STL Lambert-St Louis
LGWSTL
London Gatwick
Wed 25/11
09:50-07:54
2 stops28h 04m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£318
LondonSt. Louis
LGW London Gatwick - STL Lambert-St Louis
LGWSTL
London Gatwick
Thu 10/12
08:30-11:17
3 stops32h 47m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£401
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 15/12
06:40-11:17
3 stops34h 37m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£406
LondonSt. Louis
LGW London Gatwick - STL Lambert-St Louis
LGWSTL
London Gatwick
Tue 15/12
10:40-00:12
3 stops43h 32m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£416
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 24/11
06:40-23:59
3 stops23h 19m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£424
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Wed 9/12
08:30-00:12
2 stops21h 42m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£431
LondonSt. Louis
LGW London Gatwick - STL Lambert-St Louis
LGWSTL
London Gatwick
Tue 24/11
08:05-17:40
3 stops39h 35m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£431
LondonSt. Louis
LGW London Gatwick - STL Lambert-St Louis
LGWSTL
London Gatwick
Fri 25/12
09:40-00:41
1 stop21h 01m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£447
LondonSt. Louis
LGW London Gatwick - STL Lambert-St Louis
LGWSTL
London Gatwick
Fri 11/12
09:00-15:26
2 stops36h 26m
Lambert-St Louis
Wed 31/12
00:00-07:00
Nonstop0h 00m
£471
Flights are sorted by cheapest return flights first.
Deals found on 28/10
Showing 1-10 of 36 resultsSorted by cheapest first
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3
4
Best time to book a flight from London to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from London with our price prediction graph.
LON-STL
LGW-STL
LHR-STL
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London to St. Louis
LON-STL
LGW-STL
LHR-STL
What is the cheapest month to book a flight from London to St. Louis?
Currently, February is the cheapest month in which you can book a flight from London to St. Louis (average of £531). Flying from London to St. Louis in August is currently the most expensive (average of £1,005). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LON to STL?
Find hourly flight availability from London to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to St. Louis as you normally would.
How much does it cost for a return flight from London to St. Louis?
Airfare is below average for this route at the moment.
London to St. Louis flights typically cost between £618 and £708 in March.The cheapest return price found within the last 5 days was £561 on Scandinavian Airlines (30 Mar–12 Apr).
What’s the top stopover airport for flights from London to St. Louis?
Share of one-stop return flights from London to St. Louis chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Atlanta (ATL) – chosen by Cheapflights users on 50% of one-stop itineraries from London to St. Louis on Cheapflights.
What’s the cheapest stopover airport for flights from London to St. Louis?
Average return fare for one-stop flights from London to St. Louis, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Montreal (YUL) is the most affordable one-stop option, with an average return flight price of £579.
What’s the fastest stopover option from London to St. Louis?
Shortest average travel time for one-stop one-way flights from London to St. Louis, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Toronto (YYZ) have the shortest average one-way travel time for one-stop routes: 11h 47m.
Which airport typically offers the quickest stopover for flights from London to St. Louis?
Average stopover duration for one-stop one-way flights from London to St. Louis, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Toronto (YYZ) offer the fastest connection on this route, with an average stopover time of 1h 29m.
How often are flights from London to St. Louis delayed?
About 15% of weekly flights between London and St. Louis have experienced delays in the past year, with the average delay time being 110 minutes.
What is the most punctual flight time for London to St. Louis flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Friday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to St. Louis flights?
Over the past year, British Airways have had the lowest number of delays on this route, with just 15% of flights being delayed.
How far ahead should I book a flight from London to St. Louis?
To ensure you get the cheapest price possible for a flight from London to St. Louis, you should look to book at least 68 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated 30 October 2026.
See what other customers who have flown with Virgin Atlantic,Aer Lingus, andUnited Airlines from London to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
First time flying with Virgin. It was everything I hoped it would be.
Related info for your journey
Find useful and relevant information for your journey from London to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to St. Louis from London?
Lambert-St Louis (STL) is the airport you will fly into if you book a flight from London to St. Louis. You should not have trouble finding flights to Lambert-St Louis from London; the airport handles an average of 0 inbound flights from London per day. You should also have plenty of airline options to choose from since 10 airlines have flights to the St. Louis airport from London. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.
How long is the flight from London to St. Louis?
For as low as £670, Scandinavian Airlines can have you in St. Louis from London in 16h 26m. Airlines will cover a distance of 4186 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from London to St. Louis round-trip?
Our cheapest airline available from London to St. Louis is Air Canada. Our recent data shows that you can find tickets from as low as £305 on this airline. Additional options worth looking into are Lufthansa and United Airlines, starting at £426 and £491 round-trip. These flights start at 58% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London to St. Louis one-way?
To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £344. United Airlines flights start at £360 while deals on Finnair start at £670 one-way.
What are the most popular routes from London to St. Louis?
When deciding which route to take from London to St. Louis consider London Heathrow - Lambert-St Louis, London Gatwick - Lambert-St Louis or London Stansted - Lambert-St Louis as they are the most popular.
What are the most reliable airlines from London to St. Louis?
Consider American Airlines (66%), Aer Lingus (66%) or Finnair (66%) when booking your flight. These represent the most reliable airlines when flying from London to St. Louis.
What are the cheapest flights from London to St. Louis?
The cheapest flight price from London to St. Louis is £662. On average you can expect to pay £1,695. The most popular route, (London Heathrow - Lambert-St Louis), can usually be booked for £561.
Can I find deals for business class flights from London to St. Louis?
Yes. Cheapflights offers flight deals from London to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to St. Louis?
Currently, February is the cheapest month in which you can book a flight from London to St. Louis (average of £531). Flying from London to St. Louis in August is currently the most expensive (average of £1,005). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Browse thousands of different options on Cheapflights for your next trip
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Fly from London to St. Louis on these airlines
Choose from the following airlines for your flight from London to St. Louis. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Discover the top 10 airlines that operate flights from London to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 30 October 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from London to St. Louis?
Cheapflights helps you search for flights from London to St. Louis via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from London to St. Louis?
Millions of users choose and trust Cheapflights to book the best flight deals from London to St. Louis for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from London to St. Louis with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from London to St. Louis flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from London to St. Louis become cheaper?
Not ready to book yet? You can track prices for flights from London to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.
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