$369+ Cheap flights from London (LON) to St. Louis (STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — STL
Apr 16 — Apr 231
Round-trip
1 adult, Economy
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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
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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 March 17, 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 March 17, 2026.
This deal was found by Cheapflights users on 3/12. 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 5/1312:00 pm
LHR
- STL
1 stop13h 30m
American Airlines
Sat 5/231:45 pm
STL
- LHR
1 stop14h 45m
American Airlines
Deal found 3/12![American Airlines logo]()
$666
This deal was found by Cheapflights users on 3/16. 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 5/134:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Wed 5/279:35 pm
STL
- LHR
Nonstop8h 00m
British Airways
Deal found 3/16![British Airways logo]()
$683
This deal was found by Cheapflights users on 3/12. 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 5/139:20 am
LHR
- STL
1 stop14h 26m
Delta
Wed 5/274:20 pm
STL
- LHR
1 stop12h 00m
Delta
Deal found 3/12![Delta logo]()
$686
This deal was found by Cheapflights users on 3/12. 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.
Fri 5/154:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Wed 5/279:35 pm
STL
- LHR
Nonstop8h 00m
British Airways
Deal found 3/12![British Airways logo]()
$692
This deal was found by Cheapflights users on 3/12. 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.
Thu 5/149:45 am
LHR
- STL
1 stop15h 48m
American Airlines
Sat 5/231:45 pm
STL
- LHR
1 stop14h 45m
American Airlines
Deal found 3/12![American Airlines logo]()
$696
This deal was found by Cheapflights users on 3/12. 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 5/1312:15 pm
LHR
- STL
1 stop16h 04m
American Airlines
Sun 5/2411:18 am
STL
- LHR
1 stop14h 32m
American Airlines
Deal found 3/12![American Airlines logo]()
$702
This deal was found by Cheapflights users on 3/12. 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 5/139:20 am
LHR
- STL
1 stop12h 50m
Delta
Mon 5/2510:15 am
STL
- LHR
1 stop14h 55m
Delta
Deal found 3/12![Delta logo]()
$707
This deal was found by Cheapflights users on 3/12. 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.
Thu 5/149:20 am
LHR
- STL
1 stop12h 50m
Delta
Tue 5/2610:15 am
STL
- LHR
1 stop14h 55m
Delta
Deal found 3/12![Delta logo]()
$716
This deal was found by Cheapflights users on 3/16. 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.
Fri 5/159:20 am
LHR
- STL
1 stop14h 36m
Delta
Mon 5/2510:19 am
STL
- LHR
1 stop14h 51m
Delta
Deal found 3/16![Delta logo]()
$717
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/242:00 pm
LGW
- STL
1 stop15h 19m
Multiple Airlines
Fri 5/85:27 pm
STL
- LGW
2 stops58h 33m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$736
This American Airlines deal was found by Cheapflights users on 3/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2812:20 pm
LGW
- STL
2 stops17h 26m
American Airlines
Tue 5/57:00 am
STL
- LGW
2 stops17h 50m
American Airlines
Deal found 3/14![American Airlines logo]()
$787
This American Airlines deal was found by Cheapflights users on 3/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2111:20 am
LGW
- STL
2 stops18h 36m
American Airlines
Wed 12/29:11 am
STL
- LGW
2 stops17h 49m
American Airlines
Deal found 3/14![American Airlines logo]()
$825
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 March 17, 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 March 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/242:00 pm
LGW
- STL
1 stop15h 19m
Multiple Airlines
Fri 5/85:27 pm
STL
- LGW
2 stops58h 33m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$736
This Expedia deal was found by Cheapflights users on 3/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2110:35 am
LGW
- STL
2 stops16h 44m
Air France
Mon 4/271:02 pm
STL
- LGW
2 stops14h 38m
Air France
Deal found 3/17![Air France logo]()
$836
This British Airways deal was found by Cheapflights users on 3/14. 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.
Fri 5/11:10 pm
LHR
- STL
1 stop12h 23m
British Airways
Mon 5/44:30 pm
STL
- LHR
1 stop10h 35m
British Airways
Deal found 3/14![British Airways logo]()
$846
This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 4/2211:45 am
LHR
- STL
2 stops17h 51m
Delta
Fri 5/111:42 am
STL
- LHR
2 stops16h 38m
Delta
Deal found 3/12![Delta logo]()
$863
This Virgin Atlantic deal was found by Cheapflights users on 3/12. 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.
Fri 4/2411:45 am
LHR
- STL
2 stops17h 51m
Virgin Atlantic
Fri 5/810:49 am
STL
- LHR
2 stops14h 21m
Virgin Atlantic
Deal found 3/12![Virgin Atlantic logo]()
$921
This Expedia deal was found by Cheapflights users on 3/13. 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 4/277:15 pm
LCY
- STL
2 stops30h 18m
Iberia
Mon 5/411:14 am
STL
- LCY
2 stops22h 01m
Iberia
Deal found 3/13![Iberia logo]()
$926
This The Travel House deal was found by Cheapflights users on 3/12. 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.
Mon 4/201:45 pm
LCY
- STL
2 stops16h 01m
Aer Lingus
Thu 4/3012:25 pm
STL
- LCY
2 stops14h 10m
Aer Lingus
Deal found 3/12![Aer Lingus logo]()
$1,050
This Turkish Airlines deal was found by Cheapflights users on 3/16. 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.
Mon 4/2010:50 am
STN
- STL
2 stops40h 23m
Turkish Airlines
Thu 4/307:45 am
STL
- STN
2 stops44h 10m
Turkish Airlines
Deal found 3/16![Turkish Airlines logo]()
$1,331
This British Airways deal was found by Cheapflights users on 3/12. 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.
Thu 4/303:30 pm
LCY
- STL
2 stops33h 59m
British Airways
Mon 5/48:54 am
STL
- LCY
2 stops22h 26m
British Airways
Deal found 3/12![British Airways logo]()
$856
This Virgin Atlantic deal was found by Cheapflights users on 3/13. 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.
Sat 4/119:40 am
LHR
- STL
2 stops17h 02m
Virgin Atlantic
Sat 4/1811:42 am
STL
- LHR
2 stops15h 08m
Virgin Atlantic
Deal found 3/13![Virgin Atlantic logo]()
$991
This Delta deal was found by Cheapflights users on 3/16. 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 5/166:30 am
LHR
- STL
2 stops14h 49m
Delta
Thu 5/281:59 pm
STL
- LHR
2 stops17h 06m
Delta
Deal found 3/16![Delta logo]()
$1,009
This British Airways deal was found by Cheapflights users on 3/12. 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.
Fri 4/244:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Fri 5/87:05 am
STL
- LHR
1 stop18h 35m
British Airways
Deal found 3/12![British Airways logo]()
$918
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/112:00 pm
LGW
- STL
1 stop15h 25m
Multiple Airlines
Sat 4/188:23 pm
STL
- LGW
2 stops31h 37m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$1,019
This Delta deal was found by Cheapflights users on 3/12. 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 5/186:30 am
LHR
- STL
2 stops15h 40m
Delta
Sat 5/304:15 pm
STL
- LHR
1 stop12h 05m
Delta
Deal found 3/12![Delta logo]()
$1,024
This Expedia deal was found by Cheapflights users on 3/16. 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.
Thu 4/307:15 pm
LCY
- STL
2 stops30h 18m
Iberia
Thu 5/712:27 pm
STL
- LCY
2 stops20h 48m
Iberia
Deal found 3/16![Iberia logo]()
$1,196
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 5/182:00 pm
LGW
- STL
1 stop16h 21m
Multiple Airlines
Fri 5/295:27 pm
STL
- LGW
2 stops54h 53m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$1,097
This Delta deal was found by Cheapflights users on 3/16. 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.
Sun 5/173:15 pm
LHR
- STL
1 stop14h 44m
Delta
Thu 5/284:25 pm
STL
- LHR
1 stop13h 45m
Delta
Deal found 3/16![Delta logo]()
$1,027
This Turkish Airlines deal was found by Cheapflights users on 3/17. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:55 am
STN
- STL
2 stops20h 18m
Turkish Airlines
Mon 4/277:45 am
STL
- STN
2 stops44h 10m
Turkish Airlines
Deal found 3/17![Turkish Airlines logo]()
$1,336
This Delta deal was found by Cheapflights users on 3/16. 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 5/1810:25 am
LGW
- STL
2 stops16h 44m
Delta
Sat 5/3011:25 am
STL
- LGW
2 stops15h 55m
Delta
Deal found 3/16![Delta logo]()
$1,030
This Mytrip deal was found by Cheapflights users on 3/14. 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.
Tue 4/289:15 am
LCY
- STL
2 stops34h 10m
Multiple Airlines
Tue 5/52:20 pm
STL
- LCY
3 stops22h 10m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$1,155
This Turkish Airlines deal was found by Cheapflights users on 3/14. 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.
Mon 4/2010:50 am
LGW
- STL
2 stops40h 23m
Turkish Airlines
Thu 4/307:45 am
STL
- LGW
2 stops44h 10m
Turkish Airlines
Deal found 3/14![Turkish Airlines logo]()
$1,343
This Delta deal was found by Cheapflights users on 3/12. 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 5/1610:00 am
LCY
- STL
2 stops17h 09m
Delta
Thu 5/2810:15 am
STL
- LCY
2 stops15h 40m
Delta
Deal found 3/12![Delta logo]()
$1,068
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 5/172:00 pm
LGW
- STL
1 stop16h 21m
Multiple Airlines
Sat 5/305:27 pm
STL
- LGW
2 stops30h 53m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$1,218
This Delta deal was found by Cheapflights users on 3/16. 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.
Sun 5/1710:25 am
LGW
- STL
2 stops16h 44m
Delta
Fri 5/2911:25 am
STL
- LGW
2 stops16h 00m
Delta
Deal found 3/16![Delta logo]()
$1,070
This Turkish Airlines deal was found by Cheapflights users on 3/15. 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 6/275:45 pm
STN
- STL
2 stops33h 31m
Turkish Airlines
Mon 7/65:33 pm
STL
- STN
2 stops41h 17m
Turkish Airlines
Deal found 3/15![Turkish Airlines logo]()
$1,437
This Turkish Airlines deal was found by Cheapflights users on 3/14. 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 4/285:35 pm
STN
- STL
2 stops33h 38m
Multiple Airlines
Tue 5/57:45 am
STL
- STN
2 stops20h 10m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$1,389
This Delta deal was found by Cheapflights users on 3/16. 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 6/2710:25 am
LGW
- STL
2 stops16h 25m
Delta
Mon 7/612:10 pm
STL
- LGW
2 stops15h 30m
Delta
Deal found 3/16![Delta logo]()
$1,160
This Turkish Airlines deal was found by Cheapflights users on 3/13. 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 4/1110:50 am
STN
- STL
2 stops40h 23m
Turkish Airlines
Sat 4/187:45 am
STL
- STN
2 stops44h 10m
Turkish Airlines
Deal found 3/13![Turkish Airlines logo]()
$1,620
This Mytrip deal was found by Cheapflights users on 3/13. 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 7/1710:50 pm
STN
- STL
2 stops21h 12m
Multiple Airlines
Fri 8/712:10 pm
STL
- STN
2 stops25h 10m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$1,468
This Turkish Airlines deal was found by Cheapflights users on 3/12. 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 4/95:35 pm
STN
- STL
2 stops33h 38m
Turkish Airlines
Thu 4/167:45 am
STL
- STN
2 stops51h 05m
Turkish Airlines
Deal found 3/12![Turkish Airlines logo]()
$1,639
Last-minute flights from London to St. LouisDiscover last-minute flight deals from London to St. Louis. Data last updated March 17, 2026 and is based on user searches.
Discover last-minute flight deals from London to St. Louis. Data last updated March 17, 2026 and is based on user searches.
This ChecknFly deal was found by Cheapflights users on 3/14. 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 4/209:15 am
LHR
- STL
1 stop14h 49m
Finnair
Thu 4/302:12 pm
STL
- LHR
1 stop10h 43m
Finnair
Deal found 3/14![Finnair logo]()
$768
This TravelUp deal was found by Cheapflights users on 3/12. 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.
Wed 4/224:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Thu 4/302:12 pm
STL
- LHR
1 stop10h 43m
British Airways
Deal found 3/12![British Airways logo]()
$747
This ChecknFly deal was found by Cheapflights users on 3/12. 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.
Wed 4/224:55 pm
LHR
- STL
1 stop21h 35m
Finnair
Thu 4/3012:27 pm
STL
- LHR
1 stop13h 38m
Finnair
Deal found 3/12![Finnair logo]()
$750
This TravelUp deal was found by Cheapflights users on 3/12. 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.
Wed 4/224:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Fri 5/12:12 pm
STL
- LHR
1 stop10h 43m
British Airways
Deal found 3/12![British Airways logo]()
$787
This ChecknFly deal was found by Cheapflights users on 3/12. 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.
Thu 4/2310:05 am
LHR
- STL
1 stop15h 25m
Finnair
Thu 4/302:12 pm
STL
- LHR
1 stop16h 38m
Finnair
Deal found 3/12![Finnair logo]()
$790
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/242:00 pm
LGW
- STL
1 stop15h 19m
Multiple Airlines
Fri 5/85:27 pm
STL
- LGW
2 stops58h 33m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$736
This ChecknFly deal was found by Cheapflights users on 3/13. 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 4/2712:15 pm
LHR
- STL
1 stop16h 09m
Finnair
Mon 5/411:45 am
STL
- LHR
1 stop14h 15m
Finnair
Deal found 3/13![Finnair logo]()
$773
This British Airways deal was found by Cheapflights users on 3/13. 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.
Mon 4/273:15 pm
LHR
- STL
1 stop13h 02m
British Airways
Mon 5/41:29 pm
STL
- LHR
1 stop12h 21m
British Airways
Deal found 3/13![British Airways logo]()
$788
This Expedia deal was found by Cheapflights users on 3/13. 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 4/2711:45 am
LHR
- STL
2 stops17h 51m
KLM
Mon 5/41:02 pm
STL
- LHR
1 stop11h 23m
KLM
Deal found 3/13![KLM logo]()
$789
This American Airlines deal was found by Cheapflights users on 3/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2812:20 pm
LGW
- STL
2 stops17h 26m
American Airlines
Tue 5/57:00 am
STL
- LGW
2 stops17h 50m
American Airlines
Deal found 3/14![American Airlines logo]()
$787
This TravelUp deal was found by Cheapflights users on 3/14. 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.
Tue 4/286:10 pm
LHR
- STL
2 stops34h 07m
Finnair
Tue 5/55:21 pm
STL
- LHR
2 stops17h 44m
Finnair
Deal found 3/14![Finnair logo]()
$794
This ChecknFly deal was found by Cheapflights users on 3/15. 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.
Wed 4/296:05 pm
LHR
- STL
2 stops22h 49m
Finnair
Wed 5/65:49 pm
STL
- LHR
2 stops21h 51m
Finnair
Deal found 3/15![Finnair logo]()
$758
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 March 17, 2026.
Search for one-way flight options from London to St. Louis. Find affordable one-way fares based on user searches. Data last updated March 17, 2026.
This Trip.com deal was found by Cheapflights users on 3/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:00 pm
LGW
- STL
1 stop16h 21m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 5/292:00 pm
LGW
- STL
1 stop16h 21m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 4/182:00 pm
LGW
- STL
3 stops46h 50m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 4/189:15 am
LTN
- STL
3 stops51h 35m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$431
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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 9/16:30 am
LHR
- STL
1 stop12h 55m
Lufthansa
Deal found 3/15![Lufthansa logo]()
$499
This United Airlines deal was found by Cheapflights users on 3/15. 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 9/18:45 am
LHR
- STL
2 stops18h 37m
United Airlines
Deal found 3/15![United Airlines logo]()
$513
This FlightHub deal was found by Cheapflights users on 3/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:40 am
LHR
- STL
2 stops16h 02m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$516
This Finnair deal was found by Cheapflights users on 3/15. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:25 pm
LHR
- STL
Nonstop9h 05m
Finnair
Deal found 3/15![Finnair logo]()
$517
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/182:10 pm
LHR
- STL
2 stops46h 40m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$519
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 5/183:15 pm
STN
- STL
3 stops38h 39m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$528
This British Airways deal was found by Cheapflights users on 3/15. 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 9/212:15 pm
LHR
- STL
1 stop12h 59m
British Airways
Deal found 3/15![British Airways logo]()
$532
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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 9/16:30 pm
LCY
- STL
2 stops27h 08m
Lufthansa
Deal found 3/15![Lufthansa logo]()
$535
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 March 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $666 |
One-way from | $358 (Trip.com) |
Popular in | August |
Cheapest in | January |
Average price | $921 |
Good one-way deal | $697 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 2,558,603 searches. Data last updated March 17, 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 - STL
LGWSTL
London Gatwick
Fri 4/24
2:00 pm-11:19 pm
1 stop15h 19m
Lambert-St Louis
Fri 5/8
5:27 pm-10:00 am
2 stops58h 33m
$736
LondonSt. Louis
LGW - STL
LGWSTL
London Gatwick
Tue 4/21
10:35 am-9:19 pm
2 stops16h 44m
Lambert-St Louis
Mon 4/27
1:02 pm-9:40 am
2 stops14h 38m
$836
Quickest round-trip
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Fri 5/1
1:10 pm-7:33 pm
1 stop12h 23m
Lambert-St Louis
Mon 5/4
4:30 pm-9:05 am
1 stop10h 35m
$846
LondonSt. Louis
LCY - STL
LCYSTL
London City
Thu 4/30
3:30 pm-7:29 pm
2 stops33h 59m
Lambert-St Louis
Mon 5/4
8:54 am-1:20 pm
2 stops22h 26m
$856
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Wed 4/22
11:45 am-11:36 pm
2 stops17h 51m
Lambert-St Louis
Fri 5/1
11:42 am-10:20 am
2 stops16h 38m
$863
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Fri 4/24
4:25 pm-7:30 pm
Nonstop9h 05m
Lambert-St Louis
Fri 5/8
7:05 am-7:40 am
1 stop18h 35m
$918
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Fri 4/24
11:45 am-11:36 pm
2 stops17h 51m
Lambert-St Louis
Fri 5/8
10:49 am-7:10 am
2 stops14h 21m
$921
LondonSt. Louis
LCY - STL
LCYSTL
London City
Mon 4/27
7:15 pm-7:33 pm
2 stops30h 18m
Lambert-St Louis
Mon 5/4
11:14 am-3:15 pm
2 stops22h 01m
$926
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Sat 4/11
9:40 am-8:42 pm
2 stops17h 02m
Lambert-St Louis
Sat 4/18
11:42 am-8:50 am
2 stops15h 08m
$991
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Sat 5/16
6:30 am-3:19 pm
2 stops14h 49m
Lambert-St Louis
Thu 5/28
1:59 pm-1:05 pm
2 stops17h 06m
$1,009
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 March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*2 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
LGW-STL
LHR-STL
LCY-STL
LTN-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
LGW-STL
LHR-STL
LCY-STL
LTN-STL
How far ahead should I book a flight from London to St. Louis?
Use this chart to determine the optimal time to book a round-trip flight from London to St. Louis. Price data was last updated on March 13, 2026.
Booking 48 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.
What is the cheapest month to book a flight from London to St. Louis?
Currently, September is the cheapest month in which you can book a flight from London to St. Louis (average of $544). Flying from London to St. Louis in December is currently the most expensive (average of $836). 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?
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 March 17, 2026.
Get a feel of what it's like to fly with British Airways from London to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
6.9
Overall
6.7
Food
6.4
Comfort
6.8
Entertainment
6.4
Crew
7.6
Reviews
1 / 20
6.0
GoodRoxanne,Sep 2025
LHR - IAD
Boarding
6.9
Overall
6.7
Food
6.4
Comfort
6.8
Entertainment
6.4
Crew
7.6
Reviews
1 / 20
6.0
GoodRoxanne,Sep 2025
LHR - IAD
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 locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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London and St. Louis flights
Browse other London and St. Louis flight options. Last updated on March 17, 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 March 17, 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 March 17, 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 2,558,603 searches. Data last updated March 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$555 | Average$821 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$654 | Average$857 | FlexibilityNo cancel fee | On-time69% |