$421+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
LON — STL
Oct 22 — Oct 291
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 March, booked 21 days in advance, depart on a Monday or Wednesday and return on a Thursday
Cheap flight deals from London to St. Louis
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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 September 22, 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 September 22, 2026.
This Globehunters deal was found by Cheapflights users on 9/20. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:30 am -
1 stop12h 55m
Wed 10/2112:20 pm -
1 stop16h 05m
Deal found 9/20![Lufthansa logo]()
$838
This Mytrip deal was found by Cheapflights users on 9/18. 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 10/95:55 pm -
2 stops31h 02m
Fri 10/231:30 pm -
2 stops22h 05m
Deal found 9/18![Multiple Airlines logo]()
$840
This Air Canada deal was found by Cheapflights users on 9/17. 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.
Wed 10/79:30 am -
2 stops16h 50m
Fri 10/168:55 am -
2 stops15h 35m
Deal found 9/17![Air Canada logo]()
$841
This United Airlines deal was found by Cheapflights users on 9/17. 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 11/101:30 pm -
1 stop30h 15m
Wed 11/183:40 pm -
1 stop19h 10m
Deal found 9/17![United Airlines logo]()
$842
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 11/1011:20 am -
1 stop11h 54m
Thu 11/1912:29 pm -
1 stop11h 56m
Deal found 9/17![Delta logo]()
$845
This Virgin Atlantic deal was found by Cheapflights users on 9/18. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:25 am -
2 stops15h 33m
Mon 10/127:20 pm -
2 stops32h 05m
Deal found 9/18![Virgin Atlantic logo]()
$845
This Iberia deal was found by Cheapflights users on 9/17. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:05 am -
2 stops19h 17m
Wed 11/1811:35 am -
1 stop15h 00m
Deal found 9/17![Iberia logo]()
$848
This TravelUp deal was found by Cheapflights users on 9/18. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:50 am -
1 stop13h 23m
Sat 11/213:30 pm -
1 stop32h 55m
Deal found 9/18![Virgin Atlantic logo]()
$853
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 11/1412:05 pm -
1 stop13h 25m
Wed 11/181:00 pm -
1 stop11h 40m
Deal found 9/17![United Airlines logo]()
$854
This TravelUp deal was found by Cheapflights users on 9/20. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:45 am -
1 stop15h 50m
Sat 10/105:38 pm -
1 stop31h 37m
Deal found 9/20![Virgin Atlantic logo]()
$855
This TravelUp deal was found by Cheapflights users on 9/20. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:00 pm -
2 stops34h 51m
Sun 10/187:20 pm -
2 stops28h 00m
Deal found 9/20![Virgin Atlantic logo]()
$858
This Air Canada deal was found by Cheapflights users on 9/19. 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.
Wed 10/148:40 am -
2 stops16h 01m
Wed 10/2112:10 pm -
1 stop12h 20m
Deal found 9/19![Air Canada logo]()
$859
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 September 22, 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 September 22, 2026.
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 11/73:10 pm -
1 stop13h 44m
Mon 11/95:00 pm -
1 stop11h 25m
Deal found 9/17![United Airlines logo]()
$854
This Lufthansa deal was found by Cheapflights users on 9/20. 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.
Fri 10/166:30 am -
1 stop12h 55m
Sun 10/1812:20 pm -
1 stop11h 35m
Deal found 9/20![Multiple Airlines logo]()
$862
This Delta deal was found by Cheapflights users on 9/21. 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.
Thu 11/58:40 am -
2 stops18h 11m
Thu 11/1212:21 pm -
2 stops13h 24m
Deal found 9/21![Delta logo]()
$864
This Lufthansa deal was found by Cheapflights users on 9/17. 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.
Fri 10/166:30 am -
1 stop12h 55m
Fri 10/231:29 pm -
1 stop11h 16m
Deal found 9/17![Lufthansa logo]()
$865
This Cheapflightsfares deal was found by Cheapflights users on 9/19. 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.
Thu 10/1512:00 pm -
1 stop15h 09m
Tue 10/201:29 pm -
1 stop13h 31m
Deal found 9/19![Austrian Airlines logo]()
$896
This British Airways deal was found by Cheapflights users on 9/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/144:25 pm -
Nonstop9h 05m
Wed 10/2111:21 am -
1 stop13h 29m
Deal found 9/18![British Airways logo]()
$897
This Flightcatchers deal was found by Cheapflights users on 9/20. 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 Flightcatchers is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:20 am -
2 stops18h 03m
Wed 10/217:20 pm -
2 stops15h 20m
Deal found 9/20![Virgin Atlantic logo]()
$1,070
This Turkish Airlines deal was found by Cheapflights users on 9/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:55 am -
2 stops40h 45m
Wed 11/117:30 am -
2 stops20h 25m
Deal found 9/20![Turkish Airlines logo]()
$1,305
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 10/318:00 am -
1 stop19h 54m
Mon 11/25:00 pm -
1 stop22h 20m
Deal found 9/17![United Airlines logo]()
$854
This Kiwi.com deal was found by Cheapflights users on 9/18. 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.
Thu 10/222:00 pm -
1 stop15h 13m
Mon 10/266:35 pm -
2 stops31h 15m
Deal found 9/18![Multiple Airlines logo]()
$880
This Delta deal was found by Cheapflights users on 9/18. 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.
Fri 10/26:30 am -
2 stops16h 17m
Fri 10/1612:00 pm -
2 stops16h 20m
Deal found 9/18![Delta logo]()
$902
This British Airways deal was found by Cheapflights users on 9/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:25 pm -
Nonstop9h 05m
Fri 11/65:29 pm -
1 stop12h 06m
Deal found 9/21![British Airways logo]()
$932
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/159:30 am -
1 stop33h 55m
Wed 10/212:40 pm -
1 stop9h 55m
Deal found 9/21![United Airlines logo]()
$889
This Air Canada deal was found by Cheapflights users on 9/19. 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 11/39:50 am -
2 stops35h 36m
Tue 11/104:05 pm -
2 stops14h 45m
Deal found 9/19![Multiple Airlines logo]()
$891
This Delta deal was found by Cheapflights users on 9/22. 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.
Fri 10/911:30 am -
2 stops15h 21m
Fri 10/232:25 pm -
1 stop10h 50m
Deal found 9/22![Delta logo]()
$910
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/159:30 am -
1 stop33h 55m
Mon 10/192:40 pm -
1 stop11h 55m
Deal found 9/21![United Airlines logo]()
$889
This Delta deal was found by Cheapflights users on 9/20. 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.
Sat 11/2110:00 am -
2 stops17h 34m
Sat 11/286:00 pm -
2 stops15h 45m
Deal found 9/20![Delta logo]()
$925
This Air Canada deal was found by Cheapflights users on 9/19. 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.
Thu 11/129:50 am -
2 stops35h 36m
Mon 11/234:05 pm -
2 stops14h 45m
Deal found 9/19![Multiple Airlines logo]()
$938
This Air Canada deal was found by Cheapflights users on 9/20. 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.
Wed 11/49:50 am -
2 stops35h 36m
Wed 11/114:05 pm -
2 stops14h 45m
Deal found 9/20![Multiple Airlines logo]()
$938
This Turkish Airlines deal was found by Cheapflights users on 9/19. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:55 am -
2 stops33h 48m
Tue 11/37:30 am -
2 stops20h 25m
Deal found 9/19![Turkish Airlines logo]()
$1,305
This Mytrip deal was found by Cheapflights users on 9/20. 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.
Thu 11/1210:00 am -
3 stops31h 19m
Mon 11/164:26 pm -
3 stops32h 49m
Deal found 9/20![Multiple Airlines logo]()
$978
This Turkish Airlines deal was found by Cheapflights users on 9/19. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:20 pm -
2 stops34h 20m
Tue 11/107:30 am -
2 stops44h 25m
Deal found 9/19![Turkish Airlines logo]()
$1,305
This Turkish Airlines deal was found by Cheapflights users on 9/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:20 pm -
2 stops34h 20m
Thu 11/127:30 am -
2 stops20h 25m
Deal found 9/21![Turkish Airlines logo]()
$1,307
This Air Canada deal was found by Cheapflights users on 9/21. 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.
Wed 10/289:15 am -
2 stops35h 08m
Tue 11/34:05 pm -
2 stops14h 45m
Deal found 9/21![Multiple Airlines logo]()
$1,007
This Turkish Airlines deal was found by Cheapflights users on 9/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:20 pm -
2 stops34h 20m
Sun 11/87:30 am -
2 stops20h 25m
Deal found 9/20![Turkish Airlines logo]()
$1,307
This Icelandair deal was found by Cheapflights users on 9/20. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:55 am -
2 stops15h 35m
Tue 11/311:20 am -
2 stops17h 35m
Deal found 9/20![Multiple Airlines logo]()
$1,023
This Turkish Airlines deal was found by Cheapflights users on 9/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:55 am -
2 stops40h 45m
Mon 11/167:30 am -
2 stops44h 25m
Deal found 9/20![Turkish Airlines logo]()
$1,308
This Mytrip deal was found by Cheapflights users on 9/18. 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.
Thu 10/226:30 pm -
2 stops29h 10m
Sat 10/314:26 pm -
3 stops35h 49m
Deal found 9/18![Multiple Airlines logo]()
$1,023
This Turkish Airlines deal was found by Cheapflights users on 9/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:20 pm -
2 stops34h 20m
Sat 11/287:30 am -
2 stops26h 50m
Deal found 9/20![Turkish Airlines logo]()
$1,308
This Expedia deal was found by Cheapflights users on 9/19. 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.
Wed 11/189:15 am -
2 stops36h 11m
Wed 1/63:40 pm -
1 stop11h 35m
Deal found 9/19![Multiple Airlines logo]()
$1,031
Last-minute flights from London to St. LouisDiscover last-minute flight deals from London to St. Louis. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from London to St. Louis. Data last updated September 22, 2026 and is based on user searches.
This Virgin Atlantic deal was found by Cheapflights users on 9/18. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:25 am -
2 stops15h 33m
Mon 10/127:20 pm -
2 stops32h 05m
Deal found 9/18![Virgin Atlantic logo]()
$845
This TravelUp deal was found by Cheapflights users on 9/20. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:45 am -
1 stop15h 50m
Sat 10/105:38 pm -
1 stop31h 37m
Deal found 9/20![Virgin Atlantic logo]()
$855
This Air Canada deal was found by Cheapflights users on 9/17. 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.
Wed 10/79:30 am -
2 stops16h 50m
Fri 10/168:55 am -
2 stops15h 35m
Deal found 9/17![Air Canada logo]()
$841
This Mytrip deal was found by Cheapflights users on 9/18. 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 10/95:55 pm -
2 stops31h 02m
Fri 10/231:30 pm -
2 stops22h 05m
Deal found 9/18![Multiple Airlines logo]()
$840
This TravelUp deal was found by Cheapflights users on 9/20. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:00 pm -
2 stops34h 51m
Sun 10/187:20 pm -
2 stops28h 00m
Deal found 9/20![Virgin Atlantic logo]()
$858
This Globehunters deal was found by Cheapflights users on 9/20. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:30 am -
1 stop12h 55m
Wed 10/2112:20 pm -
1 stop16h 05m
Deal found 9/20![Lufthansa logo]()
$838
This Air Canada deal was found by Cheapflights users on 9/19. 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.
Wed 10/148:40 am -
2 stops16h 01m
Wed 10/2112:10 pm -
1 stop12h 20m
Deal found 9/19![Air Canada logo]()
$859
This Lufthansa deal was found by Cheapflights users on 9/21. 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.
Wed 10/216:30 am -
1 stop12h 55m
Fri 11/61:08 pm -
1 stop10h 47m
Deal found 9/21![Multiple Airlines logo]()
$862
This Kiwi.com deal was found by Cheapflights users on 9/18. 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.
Thu 10/222:00 pm -
1 stop15h 13m
Mon 10/266:35 pm -
2 stops31h 15m
Deal found 9/18![Multiple Airlines logo]()
$880
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/232:00 pm -
1 stop15h 13m
Mon 10/264:30 pm -
1 stop33h 20m
Deal found 9/20![Multiple Airlines logo]()
$867
This Air Canada deal was found by Cheapflights users on 9/17. 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.
Fri 10/301:00 pm -
2 stops31h 23m
Wed 11/41:08 pm -
2 stops13h 22m
Deal found 9/17![Multiple Airlines logo]()
$842
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 10/318:00 am -
1 stop19h 54m
Mon 11/25:00 pm -
1 stop22h 20m
Deal found 9/17![United Airlines logo]()
$854
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 September 22, 2026.
Search for one-way flight options from London to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Sat 11/73:40 pm -
3 stops56h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$421
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 11/179:05 pm -
3 stops51h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Sun 11/812:35 pm -
2 stops28h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$477
This Norse deal was found by Cheapflights users on 9/18. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:00 pm -
1 stop15h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$489
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 12/112:05 pm -
3 stops29h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 9/20. 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.
Wed 11/1812:05 pm -
3 stops36h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$504
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 12/1512:15 pm -
3 stops24h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$511
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 11/312:05 pm -
3 stops35h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$519
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 11/31:30 pm -
3 stops34h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$532
This Kiwi.com deal was found by Cheapflights users on 9/21. 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.
Mon 11/26:40 pm -
3 stops53h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$542
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Sun 11/18:50 am -
3 stops44h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$542
This Kiwi.com deal was found by Cheapflights users on 9/18. 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.
Wed 10/142:00 pm -
2 stops59h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$543
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 September 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $838 (Globehunters) |
One-way from | $421 (Kiwi.com) |
Popular in | August |
Cheapest in | February |
Average price | $937 |
Good one-way deal | $2,092 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 September 22, 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
LGW London Gatwick - STL Lambert-St Louis
LGWSTL
London Gatwick
Thu 10/15
2:00 pm-11:13 pm
1 stop15h 13m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$489
LondonSt. Louis
STN London Stansted - STL Lambert-St Louis
STNSTL
London Stansted
Sun 11/1
8:50 am-11:16 pm
3 stops44h 26m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$542
Quickest round-trip
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Wed 11/4
6:30 am-1:45 pm
1 stop13h 15m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$547
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 11/3
7:30 am-7:23 pm
2 stops17h 53m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$553
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Mon 11/2
7:30 am-11:24 pm
2 stops21h 54m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$553
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Wed 3/17
6:30 am-2:45 pm
1 stop13h 15m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$560
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Mon 3/15
6:50 am-11:19 pm
2 stops21h 29m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$565
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Tue 3/16
5:30 pm-2:45 pm
1 stop26h 15m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$579
LondonSt. Louis
LTN London Luton - STL Lambert-St Louis
LTNSTL
London Luton
Sun 11/1
10:15 am-11:16 pm
3 stops43h 01m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$581
LondonSt. Louis
LHR London Heathrow - STL Lambert-St Louis
LHRSTL
London Heathrow
Mon 11/23
8:00 am-8:53 am
1 stop30h 53m
Lambert-St Louis
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$584
Showing 1-10 of 60 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 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
LCY-STL
STN-STL
LGW-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
LCY-STL
STN-STL
LGW-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 $722). 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.
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 September 22, 2026.
When flying from London to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 $873 and $1,042 in October.The cheapest round-trip price found within the last 5 days was $838 on Lufthansa (Oct 14-Oct 21).
How often are flights from London to St. Louis delayed?
About 16% 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 16% of flights being delayed.
How far ahead should I book a flight from London to St. Louis?
Booking 69 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
Collinsville
Edwardsville
Glencoe
Chesterfield
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London and St. Louis flights
Browse other London and St. Louis flight options. Last updated on September 22, 2026.
Other flights from London
Browse through other flights departing from London. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Top 2 airlines flying from London to St. Louis
Discover the top 2 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 September 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$791 | Average$1,017 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$803 | Average$1,384 | FlexibilityNo cancel fee | On-time71% |