$260+ Cheap flights from St. Louis (STL) to London (LON)
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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LON
Sep 6 — Sep 131
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to London 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 Lambert-St Louis to London are usually found in October or January, booked 12 days in advance, depart on a Thursday or Monday and return on a Monday
Cheap flight deals from St. Louis to London
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Cheapest flights from St. Louis to LondonExplore the most affordable flight options available from St. Louis to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2026.
Explore the most affordable flight options available from St. Louis to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2026.
This oojo deal was found by Cheapflights users on 8/6. 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.
Sun 9/279:40 pm -
Nonstop8h 00m
Tue 10/61:00 pm -
1 stop16h 43m
Deal found 8/6![British Airways logo]()
$956
This Cheapflightsfares deal was found by Cheapflights users on 8/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:29 pm -
2 stops15h 11m
Mon 10/127:30 pm -
1 stop23h 55m
Deal found 8/6![Lufthansa logo]()
$958
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:35 pm -
Nonstop8h 00m
Fri 10/1612:15 pm -
1 stop14h 42m
Deal found 8/6![British Airways logo]()
$960
This British Airways deal was found by Cheapflights users on 8/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:40 pm -
Nonstop8h 00m
Fri 10/93:15 pm -
1 stop14h 54m
Deal found 8/6![British Airways logo]()
$961
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:29 am -
2 stops15h 26m
Tue 9/2210:00 am -
2 stops16h 35m
Deal found 8/2![Delta logo]()
$964
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/412:00 pm -
2 stops14h 50m
Tue 10/1310:00 am -
2 stops17h 23m
Deal found 8/5![Delta logo]()
$965
This United Airlines deal was found by Cheapflights users on 8/1. 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 10/266:50 pm -
1 stop12h 10m
Thu 11/510:25 am -
1 stop12h 26m
Deal found 8/1![United Airlines logo]()
$965
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:33 am -
2 stops15h 22m
Tue 9/89:20 am -
2 stops16h 38m
Deal found 8/4![Delta logo]()
$966
This Cheapflightsfares deal was found by Cheapflights users on 8/2. 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.
Wed 10/79:35 pm -
Nonstop8h 00m
Wed 10/214:25 pm -
Nonstop9h 05m
Deal found 8/2![British Airways logo]()
$966
This Air Canada deal was found by Cheapflights users on 8/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:05 pm -
2 stops15h 45m
Wed 11/49:15 am -
2 stops36h 11m
Deal found 8/4![Multiple Airlines logo]()
$968
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:50 pm -
1 stop31h 05m
Mon 9/79:30 am -
1 stop33h 55m
Deal found 8/3![United Airlines logo]()
$968
This Travelocity deal was found by Cheapflights users on 8/6. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/132:40 pm -
2 stops35h 45m
Tue 9/229:25 am -
2 stops16h 55m
Deal found 8/6![Multiple Airlines logo]()
$968
Best flights from St. Louis to LondonDiscover carefully curated flight deals from St. Louis to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 7, 2026.
Discover carefully curated flight deals from St. Louis to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 7, 2026.
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:33 am -
2 stops15h 22m
Tue 9/89:20 am -
2 stops16h 38m
Deal found 8/4![Delta logo]()
$966
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:50 pm -
1 stop31h 05m
Mon 9/79:30 am -
1 stop33h 55m
Deal found 8/3![United Airlines logo]()
$968
This Mytrip deal was found by Cheapflights users on 8/6. 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 10/192:40 pm -
2 stops16h 05m
Sat 10/249:25 pm -
2 stops24h 01m
Deal found 8/6![Multiple Airlines logo]()
$986
This KLM deal was found by Cheapflights users on 8/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:47 pm -
2 stops17h 33m
Sat 9/268:25 am -
2 stops20h 51m
Deal found 8/4![KLM logo]()
$1,066
This Turkish Airlines deal was found by Cheapflights users on 8/3. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:00 am -
2 stops43h 55m
Thu 10/85:35 pm -
2 stops33h 46m
Deal found 8/3![Turkish Airlines logo]()
$1,176
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 9/1812:10 pm -
1 stop15h 50m
Fri 9/256:50 am -
2 stops20h 31m
Deal found 8/4![United Airlines logo]()
$986
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:29 am -
2 stops14h 46m
Fri 10/29:55 am -
2 stops16h 40m
Deal found 8/5![Delta logo]()
$991
This Icelandair deal was found by Cheapflights users on 8/4. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:45 pm -
2 stops17h 10m
Wed 11/411:55 am -
2 stops16h 15m
Deal found 8/4![Multiple Airlines logo]()
$1,011
This Icelandair deal was found by Cheapflights users on 8/6. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:00 pm -
2 stops17h 40m
Wed 10/2811:55 am -
2 stops15h 30m
Deal found 8/6![Multiple Airlines logo]()
$1,015
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:00 pm -
1 stop13h 15m
Sat 9/266:30 am -
2 stops16h 02m
Deal found 8/2![Delta logo]()
$1,036
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Sat 9/266:00 am -
1 stop23h 55m
Sat 10/35:40 pm -
1 stop26h 20m
Deal found 8/5![United Airlines logo]()
$1,052
This Turkish Airlines deal was found by Cheapflights users on 8/3. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:00 am -
2 stops26h 40m
Wed 9/3010:50 am -
2 stops40h 31m
Deal found 8/3![Turkish Airlines logo]()
$1,201
This Finnair deal was found by Cheapflights users on 8/2. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:35 pm -
Nonstop8h 00m
Fri 9/2511:10 am -
1 stop11h 38m
Deal found 8/2![Multiple Airlines logo]()
$1,034
This Delta deal was found by Cheapflights users on 8/6. 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.
Tue 8/115:34 pm -
1 stop13h 31m
Fri 8/216:30 am -
2 stops15h 47m
Deal found 8/6![Delta logo]()
$1,046
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Fri 9/1812:10 pm -
1 stop12h 20m
Sat 9/268:30 am -
1 stop17h 50m
Deal found 8/5![United Airlines logo]()
$1,062
This Turkish Airlines deal was found by Cheapflights users on 8/4. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:00 am -
2 stops32h 10m
Tue 9/225:35 pm -
2 stops34h 03m
Deal found 8/4![Turkish Airlines logo]()
$1,202
This Icelandair deal was found by Cheapflights users on 8/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:15 pm -
2 stops18h 25m
Wed 9/303:40 pm -
2 stops38h 05m
Deal found 8/5![Multiple Airlines logo]()
$1,034
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:52 pm -
2 stops15h 23m
Sat 10/1012:10 pm -
2 stops17h 44m
Deal found 8/2![Delta logo]()
$1,065
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:27 pm -
1 stop11h 28m
Sat 9/129:30 am -
2 stops16h 30m
Deal found 8/3![United Airlines logo]()
$1,068
This Turkish Airlines deal was found by Cheapflights users on 8/4. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:00 am -
2 stops50h 50m
Tue 9/225:35 pm -
2 stops34h 03m
Deal found 8/4![Turkish Airlines logo]()
$1,227
This Icelandair deal was found by Cheapflights users on 8/6. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:05 am -
3 stops22h 30m
Wed 10/143:40 pm -
2 stops38h 05m
Deal found 8/6![Multiple Airlines logo]()
$1,062
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/1312:10 pm -
1 stop15h 50m
Thu 8/207:25 am -
2 stops19h 52m
Deal found 8/5![United Airlines logo]()
$1,096
This Turkish Airlines deal was found by Cheapflights users on 8/2. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:00 am -
2 stops44h 55m
Thu 10/295:20 pm -
2 stops27h 23m
Deal found 8/2![Turkish Airlines logo]()
$1,231
This Mytrip deal was found by Cheapflights users on 8/3. 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.
Sat 9/1212:10 pm -
2 stops18h 10m
Sat 9/195:40 am -
2 stops19h 01m
Deal found 8/3![Multiple Airlines logo]()
$1,064
This Delta deal was found by Cheapflights users on 8/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:33 am -
2 stops14h 42m
Mon 8/3110:20 am -
2 stops19h 06m
Deal found 8/3![Delta logo]()
$1,174
This Turkish Airlines deal was found by Cheapflights users on 8/2. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:00 am -
2 stops50h 40m
Tue 9/227:25 am -
2 stops44h 13m
Deal found 8/2![Turkish Airlines logo]()
$1,245
This Icelandair deal was found by Cheapflights users on 8/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:30 am -
3 stops21h 25m
Thu 10/159:25 pm -
2 stops32h 10m
Deal found 8/2![Multiple Airlines logo]()
$1,065
This Turkish Airlines deal was found by Cheapflights users on 8/2. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:00 am -
2 stops32h 10m
Mon 10/1210:50 am -
2 stops40h 31m
Deal found 8/2![Turkish Airlines logo]()
$1,251
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:33 am -
2 stops15h 22m
Sat 9/1912:10 pm -
2 stops17h 32m
Deal found 8/5![Delta logo]()
$1,326
This Mytrip deal was found by Cheapflights users on 8/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:40 pm -
2 stops18h 00m
Tue 9/87:05 am -
2 stops17h 36m
Deal found 8/2![Multiple Airlines logo]()
$1,096
Last-minute flights from St. Louis to LondonDiscover last-minute flight deals from St. Louis to London. Data last updated August 7, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to London. Data last updated August 7, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Mon 8/247:58 pm -
2 stops32h 02m
Sun 8/302:00 pm -
1 stop31h 28m
Deal found 8/5![Multiple Airlines logo]()
$974
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:50 pm -
1 stop31h 05m
Mon 9/79:30 am -
1 stop33h 55m
Deal found 8/3![United Airlines logo]()
$968
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:33 am -
2 stops15h 22m
Tue 9/89:20 am -
2 stops16h 38m
Deal found 8/4![Delta logo]()
$966
This Mytrip deal was found by Cheapflights users on 8/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:10 pm -
2 stops17h 00m
Sun 9/139:10 pm -
2 stops22h 15m
Deal found 8/5![Multiple Airlines logo]()
$969
This Mytrip deal was found by Cheapflights users on 8/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:10 pm -
2 stops25h 50m
Sun 9/139:35 pm -
3 stops27h 06m
Deal found 8/5![Multiple Airlines logo]()
$976
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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 9/89:35 pm -
Nonstop8h 00m
Wed 9/164:25 pm -
Nonstop9h 05m
Deal found 8/5![British Airways logo]()
$966
This Gotogate deal was found by Cheapflights users on 8/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:40 pm -
1 stop9h 55m
Fri 9/259:30 am -
1 stop15h 11m
Deal found 8/4![Multiple Airlines logo]()
$973
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:29 am -
2 stops15h 26m
Tue 9/2210:00 am -
2 stops16h 35m
Deal found 8/2![Delta logo]()
$964
This Travelocity deal was found by Cheapflights users on 8/6. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/132:40 pm -
2 stops35h 45m
Tue 9/229:25 am -
2 stops16h 55m
Deal found 8/6![Multiple Airlines logo]()
$968
This Gotogate deal was found by Cheapflights users on 8/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:40 pm -
1 stop9h 55m
Wed 10/79:30 am -
1 stop15h 11m
Deal found 8/3![Multiple Airlines logo]()
$972
This oojo deal was found by Cheapflights users on 8/6. 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.
Sun 9/279:40 pm -
Nonstop8h 00m
Tue 10/61:00 pm -
1 stop16h 43m
Deal found 8/6![British Airways logo]()
$956
This British Airways deal was found by Cheapflights users on 8/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:40 pm -
Nonstop8h 00m
Fri 10/93:15 pm -
1 stop14h 54m
Deal found 8/6![British Airways logo]()
$961
One-way flights from St. Louis to LondonSearch for one-way flight options from St. Louis to London. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
Search for one-way flight options from St. Louis to London. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:35 am -
2 stops41h 25m
Deal found 8/4![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Fri 10/22:29 pm -
2 stops33h 51m
Deal found 8/6![Multiple Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:10 pm -
3 stops55h 50m
Deal found 8/3![Multiple Airlines logo]()
$297
This oojo deal was found by Cheapflights users on 8/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/21:15 pm -
1 stop11h 20m
Deal found 8/3![British Airways logo]()
$322
This United Airlines deal was found by Cheapflights users on 8/5. 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 11/49:44 am -
2 stops14h 56m
Deal found 8/5![United Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Sun 9/66:17 pm -
2 stops33h 43m
Deal found 8/5![Multiple Airlines logo]()
$332
This Air Canada deal was found by Cheapflights users on 8/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:05 pm -
2 stops23h 55m
Deal found 8/2![Air Canada logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Fri 8/214:23 pm -
1 stop35h 37m
Deal found 8/6![Multiple Airlines logo]()
$338
This oojo deal was found by Cheapflights users on 8/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/153:40 pm -
1 stop11h 35m
Deal found 8/3![Lufthansa logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:34 pm -
2 stops33h 26m
Deal found 8/3![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:29 pm -
3 stops41h 46m
Deal found 8/3![Multiple Airlines logo]()
$343
This Expedia deal was found by Cheapflights users on 8/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:54 pm -
2 stops17h 11m
Deal found 8/2![Iberia logo]()
$345
Find flight deals from St. Louis to London
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to London (LON). 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 August 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $956 (oojo) |
One-way from | $260 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $898 |
Good round-trip deal | $977 or less |
Good one-way deal | $541 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to London 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 August 7, 2026.
Use the filters below to find and compare flights from St. Louis to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisLondon
STL Lambert-St Louis - LCY London City
STLLCY
Lambert-St Louis
Wed 9/2
10:33 am-7:55 am
2 stops15h 22m
London City
Tue 9/8
9:20 am-7:58 pm
2 stops16h 38m
$966
St. LouisLondon
STL Lambert-St Louis - LHR London Heathrow
STLLHR
Lambert-St Louis
Mon 8/31
4:50 pm-5:55 am
1 stop31h 05m
London Heathrow
Mon 9/7
9:30 am-1:25 pm
1 stop33h 55m
$968
St. LouisLondon
STL Lambert-St Louis - LTN London Luton
STLLTN
Lambert-St Louis
Mon 10/19
2:40 pm-12:45 pm
2 stops16h 05m
London Luton
Sat 10/24
9:25 pm-3:26 pm
2 stops24h 01m
$986
St. LouisLondon
STL Lambert-St Louis - LHR London Heathrow
STLLHR
Lambert-St Louis
Fri 9/18
12:10 pm-10:00 am
1 stop15h 50m
London Heathrow
Fri 9/25
6:50 am-9:21 pm
2 stops20h 31m
$986
St. LouisLondon
STL Lambert-St Louis - LHR London Heathrow
STLLHR
Lambert-St Louis
Thu 9/17
10:29 am-7:15 am
2 stops14h 46m
London Heathrow
Fri 10/2
9:55 am-8:35 pm
2 stops16h 40m
$991
St. LouisLondon
STL Lambert-St Louis - LGW London Gatwick
STLLGW
Lambert-St Louis
Tue 10/27
12:45 pm-10:55 am
2 stops17h 10m
London Gatwick
Wed 11/4
11:55 am-10:10 pm
2 stops16h 15m
$1,011
St. LouisLondon
STL Lambert-St Louis - LGW London Gatwick
STLLGW
Lambert-St Louis
Wed 10/21
3:00 pm-2:40 pm
2 stops17h 40m
London Gatwick
Wed 10/28
11:55 am-10:25 pm
2 stops15h 30m
$1,015
Quickest round-trip
St. LouisLondon
STL Lambert-St Louis - LHR London Heathrow
STLLHR
Lambert-St Louis
Wed 9/16
9:35 pm-11:35 am
Nonstop8h 00m
London Heathrow
Fri 9/25
11:10 am-4:48 pm
1 stop11h 38m
$1,034
St. LouisLondon
STL Lambert-St Louis - LGW London Gatwick
STLLGW
Lambert-St Louis
Wed 9/23
2:15 pm-2:40 pm
2 stops18h 25m
London Gatwick
Wed 9/30
3:40 pm-11:45 pm
2 stops38h 05m
$1,034
St. LouisLondon
STL Lambert-St Louis - LHR London Heathrow
STLLHR
Lambert-St Louis
Thu 9/17
12:00 pm-7:15 am
1 stop13h 15m
London Heathrow
Sat 9/26
6:30 am-4:32 pm
2 stops16h 02m
$1,036
Showing 1-10 of 60 resultsSorted by cheapest first
Compare providers for flights from St. Louis to London
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 St. Louis to London in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-London flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-London 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 St. Louis-London 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 St. Louis to London
Have a flexible travel schedule? Discover the best time to fly to London from St. Louis with our price prediction graph.
STL-LON
STL-LCY
STL-LHR
STL-LTN
STL-STN
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 St. Louis to London
STL-LON
STL-LCY
STL-LHR
STL-LTN
STL-STN
What is the cheapest month to book a flight from St. Louis to London?
Currently, October is the cheapest month in which you can book a flight from St. Louis to London (average of $666). Flying from St. Louis to London in June is currently the most expensive (average of $1,403). 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 STL to LON?
Find hourly flight availability from St. Louis to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 7, 2026.
When flying from St. Louis to London, 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 St. Louis to London?
Airfare is typical for this route at the moment.
St. Louis to London flights typically cost between $665 and $986 in September.The cheapest round-trip price found within the last 5 days was $956 on British Airways (Sep 27-Oct 6).
How often are flights from St. Louis to London delayed?
About 21% of weekly flights between St. Louis and London have experienced delays in the past year, with the average delay time being 131 minutes.
What is the most punctual flight time for St. Louis to London flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving at night 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 Wednesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on St. Louis to London flights?
Over the last year, British Airways have had the lowest number of delays on this route, with just 21% of flights being delayed.
How far ahead should I book a flight from St. Louis to London?
The best time to book flights from St. Louis to London is 11 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. 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 London. Reviews last updated August 7, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from St. Louis to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from St. Louis to London. 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 London?
Book flights to London if you plan to visit one of these locationsIlford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Wembley
Harrow
Eastleigh
Southend-on-Sea
Watford
Dartford
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton
Harlow
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Top 9 airlines flying from St. Louis to London
Discover the top 9 airlines that operate flights from St. Louis to London. 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 August 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$483 | Average$903 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$572 | Average$962 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$577 | Average$898 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$580 | Average$839 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$581 | Average$1,055 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$602 | Average$907 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$615 | Average$967 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$635 | Average$962 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$637 | Average$948 | FlexibilityNo cancel fee | On-time71% |