$531+ Cheap flights from London (LON) to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
LON — STL
Dec 7 — Dec 141
Round-trip
1 adult, Economy
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Find cheap flights from London to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 Monday or Wednesday and return on a Thursday
Cheap flight deals from London to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from London to St. LouisExplore 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 November 7, 2026.
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 November 7, 2026.
This Rumbo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:40 am -
2 stops20h 58m
Mon 12/712:36 pm -
2 stops21h 24m
Deal found 11/3![Scandinavian Airlines logo]()
$775
This Mytrip deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:25 pm -
3 stops33h 47m
Mon 12/216:21 pm -
2 stops18h 54m
Deal found 11/6![Multiple Airlines logo]()
$804
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:40 am -
2 stops23h 16m
Mon 11/232:31 pm -
2 stops19h 29m
Deal found 11/6![Scandinavian Airlines logo]()
$814
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:50 am -
2 stops30h 07m
Mon 12/712:02 pm -
1 stop12h 23m
Deal found 11/3![Multiple Airlines logo]()
$848
This ChecknFly deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:30 pm -
1 stop13h 32m
Mon 12/216:57 pm -
1 stop31h 18m
Deal found 11/3![Iberia logo]()
$858
This The Travel House deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:55 am -
2 stops37h 30m
Sun 12/138:24 pm -
1 stop32h 01m
Deal found 11/6![Finnair logo]()
$890
This Expedia deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:30 pm -
2 stops15h 29m
Mon 12/216:58 pm -
1 stop28h 57m
Deal found 11/3![Lufthansa logo]()
$908
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:30 pm -
2 stops15h 29m
Mon 12/215:08 pm -
1 stop30h 47m
Deal found 11/6![United Airlines logo]()
$909
This lastminute.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:35 pm -
2 stops32h 57m
Mon 12/215:13 pm -
2 stops31h 52m
Deal found 11/7![Virgin Atlantic logo]()
$910
This Air Canada deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/19:30 am -
2 stops35h 56m
Tue 12/84:05 pm -
2 stops14h 55m
Deal found 11/3![Multiple Airlines logo]()
$911
Best flights from London to St. LouisDiscover carefully curated flight deals from London to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 7, 2026.
Discover carefully curated flight deals from London to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 7, 2026.
This United Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/206:30 am -
1 stop13h 15m
Wed 1/273:03 pm -
2 stops13h 47m
Deal found 11/5![United Airlines logo]()
$920
This Delta deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/711:45 am -
2 stops14h 47m
Mon 12/216:30 am -
1 stop18h 35m
Deal found 11/6![Delta logo]()
$946
This Lufthansa deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/146:30 am -
1 stop13h 15m
Thu 2/189:52 am -
1 stop14h 28m
Deal found 11/4![Multiple Airlines logo]()
$955
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/167:30 am -
2 stops21h 29m
Mon 1/181:17 pm -
2 stops13h 08m
Deal found 11/6![United Airlines logo]()
$945
This Booking.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/237:30 pm -
1 stop24h 15m
Wed 3/314:05 pm -
1 stop13h 45m
Deal found 11/2![Multiple Airlines logo]()
$974
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/239:00 am -
2 stops17h 13m
Wed 3/316:45 pm -
1 stop11h 10m
Deal found 11/2![United Airlines logo]()
$952
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/216:50 am -
2 stops17h 00m
Mon 1/251:15 pm -
1 stop11h 25m
Deal found 11/6![United Airlines logo]()
$959
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:35 am -
2 stops16h 30m
Sat 12/1210:45 am -
1 stop14h 55m
Deal found 11/6![United Airlines logo]()
$992
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:30 pm -
2 stops15h 54m
Mon 11/2310:53 am -
2 stops13h 47m
Deal found 11/6![United Airlines logo]()
$993
This United Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2410:25 am -
2 stops18h 05m
Fri 12/259:35 am -
2 stops14h 45m
Deal found 11/5![United Airlines logo]()
$1,026
Last-minute flights from London to St. LouisDiscover last-minute flight deals from London to St. Louis. Data last updated November 7, 2026 and is based on user searches.
Discover last-minute flight deals from London to St. Louis. Data last updated November 7, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:40 am -
2 stops23h 16m
Mon 11/232:31 pm -
2 stops19h 29m
Deal found 11/6![Scandinavian Airlines logo]()
$814
This Air Canada deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Tue 12/19:30 am -
2 stops35h 56m
Tue 12/84:05 pm -
2 stops14h 55m
Deal found 11/3![Multiple Airlines logo]()
$911
This Rumbo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:40 am -
2 stops20h 58m
Mon 12/712:36 pm -
2 stops21h 24m
Deal found 11/3![Scandinavian Airlines logo]()
$775
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:50 am -
2 stops30h 07m
Mon 12/712:02 pm -
1 stop12h 23m
Deal found 11/3![Multiple Airlines logo]()
$848
This The Travel House deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:55 am -
2 stops37h 30m
Sun 12/138:24 pm -
1 stop32h 01m
Deal found 11/6![Finnair logo]()
$890
This Mytrip deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:25 pm -
3 stops33h 47m
Mon 12/216:21 pm -
2 stops18h 54m
Deal found 11/6![Multiple Airlines logo]()
$804
This ChecknFly deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:30 pm -
1 stop13h 32m
Mon 12/216:57 pm -
1 stop31h 18m
Deal found 11/3![Iberia logo]()
$858
This Expedia deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:30 pm -
2 stops15h 29m
Mon 12/216:58 pm -
1 stop28h 57m
Deal found 11/3![Lufthansa logo]()
$908
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:30 pm -
2 stops15h 29m
Mon 12/215:08 pm -
1 stop30h 47m
Deal found 11/6![United Airlines logo]()
$909
This lastminute.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:35 pm -
2 stops32h 57m
Mon 12/215:13 pm -
2 stops31h 52m
Deal found 11/7![Virgin Atlantic logo]()
$910
One-way flights from London to St. LouisSearch for one-way flight options from London to St. Louis. Find affordable one-way fares based on user searches. Data last updated November 7, 2026.
Search for one-way flight options from London to St. Louis. Find affordable one-way fares based on user searches. Data last updated November 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/158:15 am -
3 stops33h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$531
This Kiwi.com deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:00 am -
3 stops35h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Multiple Airlines logo]()
$543
This deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/77:45 am -
1 stop14h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![United Airlines logo]()
$558
This deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/74:25 pm -
Nonstop9h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![British Airways logo]()
$566
This Kiwi.com deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/154:15 pm -
3 stops37h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$574
This Cheapflightsfares deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/206:30 am -
1 stop12h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Lufthansa logo]()
$578
This Expedia deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:30 am -
2 stops21h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Lufthansa logo]()
$581
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/912:05 pm -
2 stops50h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![United Airlines logo]()
$586
This Cheapflightsfares deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/197:30 am -
2 stops20h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Lufthansa logo]()
$587
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/269:00 am -
2 stops18h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![United Airlines logo]()
$588
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 November 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $760 (oojo) |
One-way from | $531 (Kiwi.com) |
Popular in | August |
Cheapest in | February |
Average price | $914 |
Good one-way deal | $796 or less |
Cheapflights Fare Finder
Customize 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 November 7, 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
Cheapest round-trip
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 4/20
6:30 am-1:25 pm
1 stop12h 55m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$578
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 3/9
12:05 pm-8:19 am
2 stops50h 14m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$586
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 1/26
9:00 am-9:37 pm
2 stops18h 37m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$588
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 4/20
6:30 am-3:38 pm
2 stops15h 08m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$601
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 3/16
1:30 pm-2:45 pm
1 stop30h 15m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$608
Quickest round-trip
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 4/20
4:25 pm-7:30 pm
Nonstop9h 05m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$626
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Fri 4/30
12:10 pm-9:09 pm
2 stops38h 59m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$649
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Sun 1/24
8:00 am-9:49 pm
1 stop19h 49m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$690
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Sun 3/21
4:40 pm-8:19 am
2 stops44h 39m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$714
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Sun 11/22
7:55 pm-7:54 am
3 stops41h 59m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$716
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from London to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to St. Louis in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on London-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on London-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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
LHR-STL
Estimated round-trip 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
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 $708). Flying from London to St. Louis in August is currently the most expensive (average of $1,341). 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.
How much does it cost to fly round-trip from London to St. Louis?
Airfare is below average for this route at the moment.
London to St. Louis flights typically cost between $869 and $977 in April.The cheapest round-trip price found within the last 5 days was $760 on Scandinavian Airlines (Apr 9-Apr 17).
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 last 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?
Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will 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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Edwardsville
Glencoe
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Top 3 airlines flying from London to St. Louis
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$654 | Average$861 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$791 | Average$1,044 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$803 | Average$1,384 | FlexibilityNo cancel fee | On-time71% |