$326+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
Jul 27 — Aug 31
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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Best
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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 27, 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 27, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 6/25. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:29 pm
SAT
- LHR
1 stop16h 31m
Virgin Atlantic
Fri 10/29:20 am
LHR
- SAT
1 stop13h 43m
Virgin Atlantic
Deal found 6/25![Virgin Atlantic logo]()
$454
This Virgin Atlantic deal was found by Cheapflights users on 6/23. 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.
Mon 7/2012:04 pm
SAT
- LHR
1 stop13h 11m
Virgin Atlantic
Mon 7/273:15 pm
LHR
- SAT
1 stop15h 05m
Virgin Atlantic
Deal found 6/23![Virgin Atlantic logo]()
$460
This Virgin Atlantic deal was found by Cheapflights users on 6/24. 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.
Tue 12/298:00 am
SAT
- LHR
1 stop20h 00m
Virgin Atlantic
Fri 1/86:30 am
LHR
- SAT
2 stops16h 48m
Virgin Atlantic
Deal found 6/24![Virgin Atlantic logo]()
$464
This Virgin Atlantic deal was found by Cheapflights users on 6/25. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:10 pm
SAT
- LHR
1 stop13h 05m
Virgin Atlantic
Wed 9/309:20 am
LHR
- SAT
1 stop15h 28m
Virgin Atlantic
Deal found 6/25![Virgin Atlantic logo]()
$473
This Virgin Atlantic deal was found by Cheapflights users on 6/23. 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.
Thu 10/812:10 pm
SAT
- LHR
1 stop12h 35m
Virgin Atlantic
Mon 10/123:15 pm
LHR
- SAT
1 stop15h 13m
Virgin Atlantic
Deal found 6/23![Virgin Atlantic logo]()
$500
This Virgin Atlantic deal was found by Cheapflights users on 6/25. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:49 pm
SAT
- LHR
1 stop18h 46m
Virgin Atlantic
Tue 9/811:15 am
LHR
- SAT
1 stop13h 50m
Virgin Atlantic
Deal found 6/25![Virgin Atlantic logo]()
$503
This Virgin Atlantic deal was found by Cheapflights users on 6/24. 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.
Tue 12/2912:50 pm
SAT
- LHR
1 stop13h 55m
Virgin Atlantic
Wed 1/66:30 am
LHR
- SAT
2 stops16h 48m
Virgin Atlantic
Deal found 6/24![Virgin Atlantic logo]()
$548
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 27, 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 27, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 6/25. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:55 pm
SAT
- LHR
1 stop11h 20m
Virgin Atlantic
Wed 9/301:40 pm
LHR
- SAT
2 stops16h 30m
Virgin Atlantic
Deal found 6/25![Virgin Atlantic logo]()
$672
This United Airlines deal was found by Cheapflights users on 6/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:22 pm
SAT
- LHR
1 stop12h 18m
United Airlines
Wed 11/186:35 am
LHR
- SAT
2 stops19h 50m
United Airlines
Deal found 6/26![United Airlines logo]()
$869
This Delta deal was found by Cheapflights users on 6/27. 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 10/2610:45 am
SAT
- LHR
2 stops15h 20m
Delta
Tue 11/108:40 am
LHR
- SAT
2 stops18h 52m
Delta
Deal found 6/27![Delta logo]()
$873
This Virgin Atlantic deal was found by Cheapflights users on 6/23. 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.
Thu 10/810:45 am
SAT
- LHR
1 stop13h 40m
Virgin Atlantic
Mon 10/121:40 pm
LHR
- SAT
2 stops16h 48m
Virgin Atlantic
Deal found 6/23![Virgin Atlantic logo]()
$740
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:25 pm
SAT
- LHR
1 stop11h 20m
United Airlines
Wed 9/306:50 am
LHR
- SAT
2 stops15h 41m
United Airlines
Deal found 6/25![United Airlines logo]()
$919
This Delta deal was found by Cheapflights users on 6/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:37 pm
SAT
- LHR
1 stop17h 28m
Delta
Wed 8/196:30 am
LHR
- SAT
2 stops18h 16m
Delta
Deal found 6/24![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 6/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/34:00 pm
SAT
- LHR
2 stops15h 15m
Delta
Wed 8/198:40 am
LHR
- SAT
2 stops18h 24m
Delta
Deal found 6/24![Delta logo]()
$934
This United Airlines deal was found by Cheapflights users on 6/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:15 pm
SAT
- LHR
1 stop14h 00m
United Airlines
Tue 12/812:05 pm
LHR
- SAT
1 stop14h 01m
United Airlines
Deal found 6/23![United Airlines logo]()
$948
This United Airlines deal was found by Cheapflights users on 6/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/51:35 pm
SAT
- LHR
1 stop14h 50m
United Airlines
Wed 8/1912:05 pm
LHR
- SAT
1 stop15h 08m
United Airlines
Deal found 6/26![United Airlines logo]()
$955
Last-minute flights from San Antonio to HeathrowDiscover last-minute flight deals from San Antonio to Heathrow. Data last updated June 27, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated June 27, 2026 and is based on user searches.
This Virgin Atlantic deal was found by Cheapflights users on 6/23. 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.
Mon 7/2012:04 pm
SAT
- LHR
1 stop13h 11m
Virgin Atlantic
Mon 7/273:15 pm
LHR
- SAT
1 stop15h 05m
Virgin Atlantic
Deal found 6/23![Virgin Atlantic logo]()
$460
This Delta deal was found by Cheapflights users on 6/23. 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.
Thu 7/2312:37 pm
SAT
- LHR
1 stop17h 33m
Delta
Thu 7/306:30 am
LHR
- SAT
2 stops16h 41m
Delta
Deal found 6/23![Delta logo]()
$1,081
This Orbitz deal was found by Cheapflights users on 6/25. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/247:20 pm
SAT
- LHR
2 stops53h 15m
Multiple Airlines
Fri 8/712:05 pm
LHR
- SAT
1 stop15h 08m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,076
This Delta deal was found by Cheapflights users on 6/26. 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.
Fri 7/246:40 am
SAT
- LHR
1 stop18h 35m
Delta
Fri 8/79:55 am
LHR
- SAT
2 stops17h 09m
Delta
Deal found 6/26![Delta logo]()
$1,080
This Delta deal was found by Cheapflights users on 6/26. 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.
Fri 7/2412:37 pm
SAT
- LHR
1 stop14h 13m
Delta
Fri 7/3111:30 am
LHR
- SAT
2 stops16h 52m
Delta
Deal found 6/26![Delta logo]()
$1,087
This FlightHub deal was found by Cheapflights users on 6/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:23 pm
SAT
- LHR
1 stop12h 02m
British Airways
Tue 8/42:45 pm
LHR
- SAT
1 stop15h 25m
British Airways
Deal found 6/25![British Airways logo]()
$1,075
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:20 am
SAT
- LHR
1 stop19h 55m
Delta
Mon 8/38:40 am
LHR
- SAT
2 stops18h 49m
Delta
Deal found 6/22![Delta logo]()
$1,101
This Gotogate deal was found by Cheapflights users on 6/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/308:50 am
SAT
- LHR
1 stop15h 45m
Multiple Airlines
Tue 8/45:40 pm
LHR
- SAT
1 stop33h 33m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$1,089
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/304:18 pm
SAT
- LHR
2 stops31h 37m
United Airlines
Tue 8/45:40 pm
LHR
- SAT
1 stop33h 33m
United Airlines
Deal found 6/24![United Airlines logo]()
$1,102
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 27, 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 27, 2026.
This oojo deal was found by Cheapflights users on 6/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:52 pm
SAT
- LHR
1 stop12h 23m
British Airways
Deal found 6/23![British Airways logo]()
$326
This oojo deal was found by Cheapflights users on 6/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:10 am
SAT
- LHR
1 stop20h 55m
British Airways
Deal found 6/25![British Airways logo]()
$327
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:30 am
SAT
- LHR
3 stops26h 40m
United Airlines
Deal found 6/25![United Airlines logo]()
$332
This American Airlines deal was found by Cheapflights users on 6/25. 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.
Mon 10/54:21 pm
SAT
- LHR
1 stop12h 34m
American Airlines
Deal found 6/25![American Airlines logo]()
$333
This Air Canada deal was found by Cheapflights users on 6/23. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:08 am
SAT
- LHR
3 stops18h 02m
Air Canada
Deal found 6/23![Air Canada logo]()
$344
This oojo deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:26 pm
SAT
- LHR
1 stop11h 59m
British Airways
Deal found 6/22![British Airways logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 6/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:26 pm
SAT
- LHR
3 stops41h 54m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 6/23. 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.
Thu 10/812:15 pm
SAT
- LHR
2 stops14h 35m
Delta
Deal found 6/23![Delta logo]()
$382
This FlightHub deal was found by Cheapflights users on 6/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:28 am
SAT
- LHR
1 stop21h 22m
British Airways
Deal found 6/23![British Airways logo]()
$391
This Orbitz deal was found by Cheapflights users on 6/23. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:30 pm
SAT
- LHR
2 stops53h 00m
Air Canada
Deal found 6/23![Air Canada logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:57 am
SAT
- LHR
3 stops43h 58m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$395
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 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $454 (Virgin Atlantic) |
One-way from | $326 (oojo) |
Popular in | June |
Cheapest in | October |
Average price | $1,282 |
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 27, 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
Thu 9/24
1:55 pm-7:15 am
1 stop11h 20m
London Heathrow
Wed 9/30
1:40 pm-12:10 am
2 stops16h 30m
$672
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 10/8
10:45 am-6:25 am
1 stop13h 40m
London Heathrow
Mon 10/12
1:40 pm-12:28 am
2 stops16h 48m
$740
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 11/11
12:22 pm-6:40 am
1 stop12h 18m
London Heathrow
Wed 11/18
6:35 am-8:25 pm
2 stops19h 50m
$869
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 10/26
10:45 am-7:05 am
2 stops15h 20m
London Heathrow
Tue 11/10
8:40 am-9:32 pm
2 stops18h 52m
$873
Quickest round-trip
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 9/24
2:25 pm-7:45 am
1 stop11h 20m
London Heathrow
Wed 9/30
6:50 am-4:31 pm
2 stops15h 41m
$919
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 8/12
12:37 pm-12:05 pm
1 stop17h 28m
London Heathrow
Wed 8/19
6:30 am-6:46 pm
2 stops18h 16m
$930
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 8/3
4:00 pm-1:15 pm
2 stops15h 15m
London Heathrow
Wed 8/19
8:40 am-9:04 pm
2 stops18h 24m
$934
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 12/4
2:15 pm-10:15 am
1 stop14h 00m
London Heathrow
Tue 12/8
12:05 pm-8:06 pm
1 stop14h 01m
$948
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 8/5
1:35 pm-10:25 am
1 stop14h 50m
London Heathrow
Wed 8/19
12:05 pm-9:13 pm
1 stop15h 08m
$955
Cheapest one-way
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 10/5
5:30 am-2:10 pm
3 stops26h 40m
$332
Showing 1-10 of 19 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 $580). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $1,282). 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 27, 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.
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
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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 27, 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$555 | Average$856 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$600 | Average$780 | FlexibilityNo cancel fee | On-time72% |