$536+ Cheap flights from Heathrow (LHR) 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
May 28 — Jun 41
Round-trip
1 adult, Economy
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Cheapest flights from Heathrow to St. LouisExplore the most affordable flight options available from Heathrow to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.
Explore the most affordable flight options available from Heathrow to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.
This TravelUp deal was found by Cheapflights users on 4/24. 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 9/210:20 am
LHR
- STL
2 stops19h 31m
Finnair
Wed 9/2312:43 pm
STL
- LHR
1 stop14h 22m
Finnair
Deal found 4/24![Finnair logo]()
$846
This TravelUp deal was found by Cheapflights users on 4/27. 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 9/84:10 pm
LHR
- STL
2 stops37h 10m
Finnair
Tue 9/2212:43 pm
STL
- LHR
1 stop14h 22m
Finnair
Deal found 4/27![Finnair logo]()
$851
This lol.travel deal was found by Cheapflights users on 4/26. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:45 pm
LHR
- STL
1 stop14h 35m
Finnair
Tue 9/2212:43 pm
STL
- LHR
1 stop18h 07m
Finnair
Deal found 4/26![Finnair logo]()
$856
This American Airlines deal was found by Cheapflights users on 4/25. 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.
Wed 11/1111:45 am
LHR
- STL
1 stop13h 44m
American Airlines
Thu 11/191:52 pm
STL
- LHR
1 stop14h 08m
American Airlines
Deal found 4/25![American Airlines logo]()
$859
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Mon 9/2112:30 pm
LHR
- STL
1 stop12h 28m
American Airlines
Thu 11/52:17 pm
STL
- LHR
1 stop10h 38m
American Airlines
Deal found 4/27![American Airlines logo]()
$860
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Wed 12/21:10 pm
LHR
- STL
1 stop13h 11m
American Airlines
Tue 12/89:30 am
STL
- LHR
1 stop15h 20m
American Airlines
Deal found 4/27![American Airlines logo]()
$861
This British Airways deal was found by Cheapflights users on 4/26. 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.
Tue 9/84:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Tue 9/2212:47 pm
STL
- LHR
1 stop12h 08m
British Airways
Deal found 4/26![British Airways logo]()
$870
This British Airways deal was found by Cheapflights users on 4/28. 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.
Tue 9/224:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Tue 10/69:35 pm
STL
- LHR
Nonstop8h 00m
British Airways
Deal found 4/28![British Airways logo]()
$873
This Expedia deal was found by Cheapflights users on 4/23. 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 9/166:30 am
LHR
- STL
1 stop12h 55m
Multiple Airlines
Wed 9/2312:43 pm
STL
- LHR
1 stop14h 22m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$874
Best flights from Heathrow to St. LouisDiscover carefully curated flight deals from Heathrow to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 28, 2026.
Discover carefully curated flight deals from Heathrow to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 28, 2026.
This British Airways deal was found by Cheapflights users on 4/28. 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.
Tue 9/224:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Tue 10/69:35 pm
STL
- LHR
Nonstop8h 00m
British Airways
Deal found 4/28![British Airways logo]()
$873
This Virgin Atlantic deal was found by Cheapflights users on 4/24. 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.
Wed 9/29:55 am
LHR
- STL
2 stops16h 36m
Virgin Atlantic
Wed 9/2310:45 am
STL
- LHR
2 stops14h 00m
Virgin Atlantic
Deal found 4/24![Virgin Atlantic logo]()
$880
This Delta deal was found by Cheapflights users on 4/23. 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 9/236:30 am
LHR
- STL
2 stops16h 25m
Delta
Wed 9/3011:51 am
STL
- LHR
1 stop13h 24m
Delta
Deal found 4/23![Delta logo]()
$881
This Finnair deal was found by Cheapflights users on 4/26. 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.
Thu 9/179:45 am
LHR
- STL
1 stop19h 35m
Finnair
Sun 9/209:40 pm
STL
- LHR
Nonstop8h 00m
Finnair
Deal found 4/26![Finnair logo]()
$995
This Virgin Atlantic deal was found by Cheapflights users on 4/23. 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.
Wed 9/169:55 am
LHR
- STL
2 stops16h 36m
Virgin Atlantic
Wed 9/2310:45 am
STL
- LHR
2 stops14h 00m
Virgin Atlantic
Deal found 4/23![Virgin Atlantic logo]()
$881
This Delta deal was found by Cheapflights users on 4/26. 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 9/86:30 am
LHR
- STL
2 stops16h 25m
Delta
Tue 9/221:30 pm
STL
- LHR
2 stops13h 20m
Delta
Deal found 4/26![Delta logo]()
$883
This British Airways deal was found by Cheapflights users on 4/26. 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 9/164:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Wed 9/2311:18 am
STL
- LHR
1 stop13h 32m
British Airways
Deal found 4/26![British Airways logo]()
$895
This Delta deal was found by Cheapflights users on 4/27. 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 9/146:30 am
LHR
- STL
2 stops16h 25m
Delta
Sat 9/1910:45 am
STL
- LHR
2 stops17h 35m
Delta
Deal found 4/27![Delta logo]()
$924
This British Airways deal was found by Cheapflights users on 4/24. 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 8/304:25 pm
LHR
- STL
Nonstop9h 05m
British Airways
Fri 9/114:47 pm
STL
- LHR
1 stop10h 38m
British Airways
Deal found 4/24![British Airways logo]()
$1,031
Last-minute flights from Heathrow to St. LouisDiscover last-minute flight deals from Heathrow to St. Louis. Data last updated April 28, 2026 and is based on user searches.
Discover last-minute flight deals from Heathrow to St. Louis. Data last updated April 28, 2026 and is based on user searches.
This The Travel House deal was found by Cheapflights users on 4/26. 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 4/279:10 pm
LHR
- STL
2 stops32h 36m
Aer Lingus
Mon 5/412:27 pm
STL
- LHR
2 stops13h 38m
Aer Lingus
Deal found 4/26![Aer Lingus logo]()
$965
This The Travel House deal was found by Cheapflights users on 4/27. 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.
Thu 4/3012:00 pm
LHR
- STL
2 stops16h 17m
Aer Lingus
Tue 5/55:21 pm
STL
- LHR
2 stops14h 34m
Aer Lingus
Deal found 4/27![Aer Lingus logo]()
$991
This The Travel House deal was found by Cheapflights users on 4/25. 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 5/47:40 am
LHR
- STL
2 stops22h 06m
Aer Lingus
Sat 5/94:30 pm
STL
- LHR
2 stops15h 00m
Aer Lingus
Deal found 4/25![Aer Lingus logo]()
$988
This American Airlines deal was found by Cheapflights users on 4/27. 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 5/124:25 pm
LHR
- STL
Nonstop9h 05m
American Airlines
Mon 5/1811:06 am
STL
- LHR
1 stop13h 49m
American Airlines
Deal found 4/27![American Airlines logo]()
$949
This Delta deal was found by Cheapflights users on 4/27. 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 5/1210:45 am
LHR
- STL
1 stop12h 31m
Delta
Wed 5/2011:25 am
STL
- LHR
1 stop19h 40m
Delta
Deal found 4/27![Delta logo]()
$995
This American Airlines deal was found by Cheapflights users on 4/27. 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 5/124:25 pm
LHR
- STL
Nonstop9h 05m
American Airlines
Tue 5/267:50 pm
STL
- LHR
1 stop10h 25m
American Airlines
Deal found 4/27![American Airlines logo]()
$1,009
This American Airlines deal was found by Cheapflights users on 4/24. 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 5/124:25 pm
LHR
- STL
Nonstop9h 05m
American Airlines
Thu 7/92:35 pm
STL
- LHR
1 stop12h 30m
American Airlines
Deal found 4/24![American Airlines logo]()
$1,010
This British Airways deal was found by Cheapflights users on 4/27. 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 5/139:45 am
LHR
- STL
1 stop12h 15m
British Airways
Thu 5/217:00 am
STL
- LHR
1 stop21h 30m
British Airways
Deal found 4/27![British Airways logo]()
$972
This British Airways deal was found by Cheapflights users on 4/27. 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 5/1411:10 am
LHR
- STL
1 stop11h 31m
British Airways
Thu 5/217:00 am
STL
- LHR
1 stop21h 30m
British Airways
Deal found 4/27![British Airways logo]()
$1,013
This deal was found by Cheapflights users on 4/25. 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.
Sat 5/161:25 pm
LHR
- STL
1 stop14h 13m
Delta
Sat 5/237:05 pm
STL
- LHR
1 stop12h 10m
Delta
Deal found 4/25![Delta logo]()
$984
This deal was found by Cheapflights users on 4/25. 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.
Sat 5/169:20 am
LHR
- STL
1 stop14h 40m
Delta
Wed 5/209:13 am
STL
- LHR
1 stop15h 12m
Delta
Deal found 4/25![Delta logo]()
$997
This British Airways deal was found by Cheapflights users on 4/25. 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.
Sat 5/309:15 am
LHR
- STL
1 stop14h 10m
British Airways
Thu 9/1012:47 pm
STL
- LHR
1 stop12h 08m
British Airways
Deal found 4/25![British Airways logo]()
$998
One-way flights from Heathrow to St. LouisSearch for one-way flight options from Heathrow to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
Search for one-way flight options from Heathrow to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
This BYOjet deal was found by Cheapflights users on 4/27. 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 BYOjet 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 4/27![Lufthansa logo]()
$536
This Booking.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:40 am
LHR
- STL
2 stops16h 01m
Air Canada
Deal found 4/27![Air Canada logo]()
$538
This Cheapflightsfares deal was found by Cheapflights users on 4/24. 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 9/26:30 am
LHR
- STL
1 stop12h 55m
Lufthansa
Deal found 4/24![Lufthansa logo]()
$539
This Air Canada deal was found by Cheapflights users on 4/24. 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 9/28:40 am
LHR
- STL
2 stops16h 02m
Air Canada
Deal found 4/24![Air Canada logo]()
$543
This Air Canada deal was found by Cheapflights users on 4/27. 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 9/238:40 am
LHR
- STL
2 stops16h 01m
Air Canada
Deal found 4/27![Air Canada logo]()
$544
This Lufthansa deal was found by Cheapflights users on 4/27. 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.
Mon 9/216:30 am
LHR
- STL
1 stop12h 55m
Lufthansa
Deal found 4/27![Lufthansa logo]()
$546
This British Airways deal was found by Cheapflights users on 4/27. 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 9/207:20 pm
LHR
- STL
2 stops30h 43m
British Airways
Deal found 4/27![British Airways logo]()
$550
This Cheapflightsfares deal was found by Cheapflights users on 4/26. 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.
Mon 8/317:30 pm
LHR
- STL
1 stop23h 55m
Lufthansa
Deal found 4/26![Lufthansa logo]()
$557
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 6/159:25 pm
LHR
- STL
3 stops51h 58m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$561
This Orbitz deal was found by Cheapflights users on 4/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:05 am
LHR
- STL
2 stops37h 36m
Air Canada
Deal found 4/27![Air Canada logo]()
$562
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/159:10 pm
LHR
- STL
3 stops29h 59m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$564
Find flight deals from Heathrow to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 April 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $846 (TravelUp) |
One-way from | $536 (BYOjet) |
Popular in | July |
Cheapest in | February |
Average price | $990 |
Good round-trip deal | $998 or less |
Good one-way deal | $692 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Heathrow 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 April 28, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Tue 9/22
4:25 pm-7:30 pm
Nonstop9h 05m
Lambert-St Louis
Tue 10/6
9:35 pm-11:35 am
Nonstop8h 00m
$873
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Wed 9/2
9:55 am-8:31 pm
2 stops16h 36m
Lambert-St Louis
Wed 9/23
10:45 am-6:45 am
2 stops14h 00m
$880
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Wed 9/23
6:30 am-4:55 pm
2 stops16h 25m
Lambert-St Louis
Wed 9/30
11:51 am-7:15 am
1 stop13h 24m
$881
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Wed 9/16
9:55 am-8:31 pm
2 stops16h 36m
Lambert-St Louis
Wed 9/23
10:45 am-6:45 am
2 stops14h 00m
$881
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Tue 9/8
6:30 am-4:55 pm
2 stops16h 25m
Lambert-St Louis
Tue 9/22
1:30 pm-8:50 am
2 stops13h 20m
$883
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Wed 9/16
4:25 pm-7:30 pm
Nonstop9h 05m
Lambert-St Louis
Wed 9/23
11:18 am-6:50 am
1 stop13h 32m
$895
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Mon 9/14
6:30 am-4:55 pm
2 stops16h 25m
Lambert-St Louis
Sat 9/19
10:45 am-10:20 am
2 stops17h 35m
$924
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Thu 9/17
9:45 am-11:20 pm
1 stop19h 35m
Lambert-St Louis
Sun 9/20
9:40 pm-11:40 am
Nonstop8h 00m
$995
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Sun 8/30
4:25 pm-7:30 pm
Nonstop9h 05m
Lambert-St Louis
Fri 9/11
4:47 pm-9:25 am
1 stop10h 38m
$1,031
Cheapest one-way
Quickest one-way
LondonSt. Louis
LHR - STL
LHRSTL
London Heathrow
Tue 9/1
4:25 pm-7:30 pm
Nonstop9h 05m
$561
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Heathrow 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 Heathrow to St. Louis in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on London Heathrow Airport-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 Heathrow Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on London Heathrow Airport-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 Heathrow Airport-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 Heathrow to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Heathrow with our price prediction graph.
LHR-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to St. Louis
How far ahead should I book a flight from London Heathrow Airport to St. Louis?
The best time to book flights from London Heathrow Airport to St. Louis is 71 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.
What is the cheapest month to book a flight from London Heathrow Airport to St. Louis?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to St. Louis (average of $744). Flying from London Heathrow Airport to St. Louis in July is currently the most expensive (average of $1,167). 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 LHR to STL?
Find hourly flight availability from Heathrow 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 April 28, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to St. Louis as you normally would.
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 April 28, 2026.
Peruse reviews from past customers who have flown with United Airlines,American Airlines, andBritish Airways from London Heathrow Airport to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Crew
8.1
Boarding
7.7
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Comfort
7.3
Crew
8.1
Boarding
7.7
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Comfort
7.3
Crew
8.1
Boarding
7.7
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Comfort
7.3
Crew
8.1
Boarding
7.7
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Related info for your journey
Find useful and relevant information for your journey from Heathrow 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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Complete your trip
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Heathrow and St. Louis flights
Browse other Heathrow and St. Louis flight options. Last updated on April 28, 2026.
Other flights from Heathrow
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on April 28, 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 April 28, 2026.
Top 3 airlines flying from Heathrow to St. Louis
Discover the top 3 airlines that operate flights from Heathrow 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 April 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$555 | Average$869 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$654 | Average$857 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$692 | Average$1,143 | FlexibilityNo cancel fee | On-time71% |