$332+ Cheap flights from San Antonio (SAT) to Heathrow (LHR)
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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
Jul 18 — Jul 251
Round-trip
1 adult, Economy
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Find cheap flights from San Antonio to Heathrow with Cheapflights
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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 San Antonio to HeathrowExplore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
Explore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Sun 12/612:10 pm
SAT
- LHR
1 stop16h 40m
United Airlines
Tue 12/89:30 am
LHR
- SAT
2 stops17h 37m
United Airlines
Deal found 6/15![United Airlines logo]()
$755
This Iberia deal was found by Cheapflights users on 6/13. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3012:56 pm
SAT
- LHR
1 stop13h 19m
Iberia
Thu 1/147:30 am
LHR
- SAT
2 stops19h 19m
Iberia
Deal found 6/13![Iberia logo]()
$869
This Iberia deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/261:42 pm
SAT
- LHR
1 stop15h 18m
Iberia
Tue 11/107:30 am
LHR
- SAT
2 stops19h 21m
Iberia
Deal found 6/17![Iberia logo]()
$870
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Wed 9/239:07 am
SAT
- LHR
2 stops19h 33m
United Airlines
Thu 10/87:25 am
LHR
- SAT
2 stops19h 13m
United Airlines
Deal found 6/15![United Airlines logo]()
$872
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:15 pm
SAT
- LHR
1 stop12h 25m
Delta
Tue 11/108:40 am
LHR
- SAT
2 stops18h 52m
Delta
Deal found 6/18![Delta logo]()
$873
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:00 am
SAT
- LHR
2 stops15h 10m
United Airlines
Wed 12/96:35 am
LHR
- SAT
2 stops19h 31m
United Airlines
Deal found 6/14![United Airlines logo]()
$875
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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.
Mon 10/265:00 pm
SAT
- LHR
2 stops17h 50m
Lufthansa
Tue 11/108:30 am
LHR
- SAT
2 stops18h 37m
Lufthansa
Deal found 6/15![Lufthansa logo]()
$876
This oojo deal was found by Cheapflights users on 6/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/84:10 pm
SAT
- LHR
2 stops19h 30m
Scandinavian Airlines
Sun 11/156:40 am
LHR
- SAT
2 stops21h 47m
Scandinavian Airlines
Deal found 6/14![Scandinavian Airlines logo]()
$878
This Air Canada deal was found by Cheapflights users on 6/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:35 am
SAT
- LHR
3 stops16h 55m
Multiple Airlines
Thu 10/88:05 pm
LHR
- SAT
2 stops31h 08m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$882
Best flights from San Antonio to HeathrowDiscover carefully curated flight deals from San Antonio to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
Discover carefully curated flight deals from San Antonio to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:45 am
SAT
- LHR
2 stops17h 00m
Delta
Tue 11/108:40 am
LHR
- SAT
2 stops18h 52m
Delta
Deal found 6/18![Delta logo]()
$877
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/232:15 pm
SAT
- LHR
1 stop11h 30m
United Airlines
Tue 9/16:50 am
LHR
- SAT
2 stops15h 41m
United Airlines
Deal found 6/16![United Airlines logo]()
$932
This Scandinavian Airlines deal was found by Cheapflights users on 6/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/174:10 pm
SAT
- LHR
3 stops23h 25m
Scandinavian Airlines
Mon 11/236:40 am
LHR
- SAT
2 stops23h 48m
Scandinavian Airlines
Deal found 6/14![Scandinavian Airlines logo]()
$983
This United deal was found by Cheapflights users on 6/14. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:30 am
SAT
- LHR
1 stop24h 05m
Multiple Airlines
Tue 9/85:40 pm
LHR
- SAT
1 stop33h 33m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$996
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/184:25 pm
SAT
- LHR
2 stops13h 40m
Delta
Sat 10/2411:30 am
LHR
- SAT
2 stops17h 50m
Delta
Deal found 6/17![Delta logo]()
$935
This United Airlines deal was found by Cheapflights users on 6/15. 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 11/178:55 am
SAT
- LHR
2 stops15h 45m
United Airlines
Mon 11/2310:00 am
LHR
- SAT
1 stop13h 33m
United Airlines
Deal found 6/15![United Airlines logo]()
$951
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Mon 8/35:57 pm
SAT
- LHR
1 stop11h 38m
United Airlines
Wed 8/197:45 am
LHR
- SAT
2 stops15h 58m
United Airlines
Deal found 6/15![United Airlines logo]()
$956
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:10 am
SAT
- LHR
2 stops15h 45m
United Airlines
Wed 8/1912:05 pm
LHR
- SAT
1 stop15h 08m
United Airlines
Deal found 6/14![United Airlines logo]()
$959
This Delta deal was found by Cheapflights users on 6/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:40 am
SAT
- LHR
1 stop16h 45m
Delta
Tue 7/218:40 am
LHR
- SAT
2 stops18h 46m
Delta
Deal found 6/14![Delta logo]()
$1,091
This Delta deal was found by Cheapflights users on 6/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:15 am
SAT
- LHR
1 stop19h 55m
Delta
Fri 7/316:30 am
LHR
- SAT
2 stops16h 41m
Delta
Deal found 6/13![Delta logo]()
$1,091
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:59 pm
SAT
- LHR
1 stop31h 56m
United Airlines
Mon 9/72:05 pm
LHR
- SAT
2 stops38h 46m
United Airlines
Deal found 6/16![United Airlines logo]()
$996
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/195:30 am
SAT
- LHR
1 stop20h 15m
United Airlines
Thu 8/67:45 am
LHR
- SAT
1 stop13h 36m
United Airlines
Deal found 6/16![United Airlines logo]()
$1,062
Last-minute flights from San Antonio to HeathrowDiscover last-minute flight deals from San Antonio to Heathrow. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated June 18, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:35 pm
SAT
- LHR
1 stop12h 45m
United Airlines
Tue 7/219:30 am
LHR
- SAT
2 stops32h 59m
United Airlines
Deal found 6/13![United Airlines logo]()
$1,084
This Expedia deal was found by Cheapflights users on 6/17. 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.
Thu 7/168:50 am
SAT
- LHR
2 stops54h 10m
Multiple Airlines
Thu 8/209:30 am
LHR
- SAT
2 stops17h 22m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$997
This Expedia deal was found by Cheapflights users on 6/17. 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.
Thu 7/161:32 pm
SAT
- LHR
1 stop14h 58m
Iberia
Thu 8/2011:30 am
LHR
- SAT
2 stops17h 20m
Iberia
Deal found 6/17![Iberia logo]()
$1,031
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1911:43 am
SAT
- LHR
1 stop14h 02m
United Airlines
Wed 8/58:30 am
LHR
- SAT
1 stop18h 43m
United Airlines
Deal found 6/16![United Airlines logo]()
$1,060
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:40 am
SAT
- LHR
1 stop18h 35m
Delta
Tue 7/286:30 am
LHR
- SAT
2 stops16h 41m
Delta
Deal found 6/17![Delta logo]()
$1,034
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:57 pm
SAT
- LHR
1 stop11h 38m
United Airlines
Thu 8/62:10 pm
LHR
- SAT
1 stop14h 47m
United Airlines
Deal found 6/16![United Airlines logo]()
$1,062
This Air Canada deal was found by Cheapflights users on 6/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/238:50 am
SAT
- LHR
1 stop15h 45m
Air Canada
Fri 7/316:00 am
LHR
- SAT
2 stops21h 13m
Air Canada
Deal found 6/15![Air Canada logo]()
$1,085
This Mytrip deal was found by Cheapflights users on 6/13. 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.
Thu 7/308:50 am
SAT
- LHR
2 stops28h 35m
Multiple Airlines
Tue 8/49:10 pm
LHR
- SAT
2 stops30h 03m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,026
This Trip.com deal was found by Cheapflights users on 6/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/308:50 am
SAT
- LHR
1 stop18h 45m
Multiple Airlines
Thu 8/65:40 pm
LHR
- SAT
1 stop33h 33m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,078
One-way flights from San Antonio to HeathrowSearch for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
Search for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:17 pm
SAT
- LHR
2 stops23h 03m
United Airlines
Deal found 6/14![United Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Tue 8/47:39 pm
SAT
- LHR
2 stops42h 41m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$373
This oojo deal was found by Cheapflights users on 6/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:10 am
SAT
- LHR
1 stop20h 55m
British Airways
Deal found 6/17![British Airways logo]()
$379
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:30 am
SAT
- LHR
2 stops22h 40m
United Airlines
Deal found 6/16![United Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/812:15 pm
SAT
- LHR
2 stops14h 45m
Delta
Deal found 6/17![Delta logo]()
$391
This Air Canada deal was found by Cheapflights users on 6/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:48 am
SAT
- LHR
3 stops18h 12m
Air Canada
Deal found 6/14![Air Canada logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/257:39 pm
SAT
- LHR
2 stops34h 16m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$402
This eDestinos deal was found by Cheapflights users on 6/15. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:45 pm
SAT
- LHR
1 stop11h 35m
Virgin Atlantic
Deal found 6/15![Virgin Atlantic logo]()
$406
This Cheapflightsfares deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/191:32 pm
SAT
- LHR
2 stops18h 23m
Aer Lingus
Deal found 6/18![Aer Lingus logo]()
$425
Find flight deals from San Antonio to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Heathrow (LHR). 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 June 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $755 (United Airlines) |
One-way from | $332 (United Airlines) |
Popular in | June |
Cheapest in | October |
Average price | $1,285 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio to Heathrow 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 June 18, 2026.
Use the filters below to find and compare flights from San Antonio to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 10/26
10:45 am-8:45 am
2 stops17h 00m
London Heathrow
Tue 11/10
8:40 am-9:32 pm
2 stops18h 52m
$877
Quickest round-trip
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sun 8/23
2:15 pm-7:45 am
1 stop11h 30m
London Heathrow
Tue 9/1
6:50 am-4:31 pm
2 stops15h 41m
$932
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sun 10/18
4:25 pm-12:05 pm
2 stops13h 40m
London Heathrow
Sat 10/24
11:30 am-11:20 pm
2 stops17h 50m
$935
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 11/17
8:55 am-6:40 am
2 stops15h 45m
London Heathrow
Mon 11/23
10:00 am-5:33 pm
1 stop13h 33m
$951
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 8/3
5:57 pm-11:35 am
1 stop11h 38m
London Heathrow
Wed 8/19
7:45 am-5:43 pm
2 stops15h 58m
$956
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 8/12
9:10 am-6:55 am
2 stops15h 45m
London Heathrow
Wed 8/19
12:05 pm-9:13 pm
1 stop15h 08m
$959
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 11/17
4:10 pm-9:35 pm
3 stops23h 25m
London Heathrow
Mon 11/23
6:40 am-12:28 am
2 stops23h 48m
$983
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 9/3
5:30 am-11:35 am
1 stop24h 05m
London Heathrow
Tue 9/8
5:40 pm-9:13 pm
1 stop33h 33m
$996
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 8/31
5:59 pm-7:55 am
1 stop31h 56m
London Heathrow
Mon 9/7
2:05 pm-10:51 pm
2 stops38h 46m
$996
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sun 7/19
5:30 am-7:45 am
1 stop20h 15m
London Heathrow
Thu 8/6
7:45 am-3:21 pm
1 stop13h 36m
$1,062
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from San Antonio to Heathrow
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 San Antonio to Heathrow in June.
| 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 |
- Most accurate provider: When it comes to deals on San Antonio-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-London Heathrow Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Antonio-London Heathrow Airport 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 San Antonio-London Heathrow Airport 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 San Antonio to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Antonio with our price prediction graph.
SAT-LHR
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 San Antonio to London Heathrow Airport
How far ahead should I book a flight from San Antonio to London Heathrow Airport?
To ensure you get the cheapest price possible for a flight from San Antonio to London Heathrow Airport, you should look to book at least 75 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?
Currently, October is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of $571). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $1,285). 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 San Antonio to London Heathrow Airport?
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated June 18, 2026.
Peruse reviews from past customers who have flown with Delta,Virgin Atlantic, andUnited Airlines from San Antonio to London Heathrow Airport 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.
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Food
7.2
Entertainment
7.8
Comfort
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 San Antonio to Heathrow. 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 Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Browse thousands of different options on Cheapflights for your next trip
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Find flights from San Antonio to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Heathrow
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 18, 2026.
San Antonio and Heathrow flights
Browse other San Antonio and Heathrow flight options. Last updated on June 18, 2026.
Other flights from San Antonio
Browse through other flights departing from San Antonio. Flights are based on user searches made on Cheapflights and were last updated on June 18, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from San Antonio to Heathrow
Discover the top 5 airlines that operate flights from San Antonio to Heathrow. 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 June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$529 | Average$931 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$530 | Average$674 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$530 | Average$986 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$556 | Average$822 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$600 | Average$780 | FlexibilityNo cancel fee | On-time72% |