$287+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
Jun 18 — Jun 251
Round-trip
1 adult, Economy
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Find cheap flights from San Antonio to Heathrow 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
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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 May 19, 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 May 19, 2026.
This Iberia deal was found by Cheapflights users on 5/17. 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.
Wed 12/303:00 pm
SAT
- LHR
1 stop11h 15m
Iberia
Thu 1/147:30 am
LHR
- SAT
2 stops19h 19m
Iberia
Deal found 5/17![Iberia logo]()
$869
This Expedia deal was found by Cheapflights users on 5/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:45 pm
SAT
- LHR
1 stop16h 05m
Iberia
Fri 9/1811:30 am
LHR
- SAT
2 stops17h 25m
Iberia
Deal found 5/14![Iberia logo]()
$872
This Delta deal was found by Cheapflights users on 5/18. 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.
Tue 10/2712:15 pm
SAT
- LHR
1 stop14h 35m
Delta
Wed 11/410:00 am
LHR
- SAT
2 stops19h 20m
Delta
Deal found 5/18![Delta logo]()
$873
This Air Canada deal was found by Cheapflights users on 5/14. 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.
Wed 9/912:07 pm
SAT
- LHR
2 stops15h 53m
Multiple Airlines
Fri 9/186:00 am
LHR
- SAT
2 stops21h 13m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$877
This Delta deal was found by Cheapflights users on 5/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/306:45 am
SAT
- LHR
2 stops20h 00m
Delta
Thu 1/1411:45 am
LHR
- SAT
2 stops17h 35m
Delta
Deal found 5/15![Delta logo]()
$878
This Delta deal was found by Cheapflights users on 5/14. 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.
Wed 8/126:23 am
SAT
- LHR
2 stops18h 47m
Delta
Wed 8/198:40 am
LHR
- SAT
2 stops18h 34m
Delta
Deal found 5/14![Delta logo]()
$879
This Delta deal was found by Cheapflights users on 5/14. 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.
Wed 12/304:00 pm
SAT
- LHR
2 stops15h 45m
Delta
Wed 1/136:30 am
LHR
- SAT
2 stops16h 48m
Delta
Deal found 5/14![Delta logo]()
$880
This Scandinavian Airlines deal was found by Cheapflights users on 5/18. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/12:10 pm
SAT
- LHR
2 stops22h 20m
Scandinavian Airlines
Sun 11/86:40 am
LHR
- SAT
2 stops21h 47m
Scandinavian Airlines
Deal found 5/18![Scandinavian Airlines logo]()
$881
This Booking.com deal was found by Cheapflights users on 5/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:00 am
SAT
- LHR
2 stops32h 35m
Air Canada
Wed 11/111:00 pm
LHR
- SAT
2 stops40h 08m
Air Canada
Deal found 5/18![Air Canada logo]()
$882
This Air Canada deal was found by Cheapflights users on 5/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:35 am
SAT
- LHR
3 stops16h 55m
Air Canada
Wed 10/148:40 am
LHR
- SAT
2 stops18h 33m
Air Canada
Deal found 5/18![Air Canada logo]()
$884
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 May 19, 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 May 19, 2026.
This Delta deal was found by Cheapflights users on 5/14. 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.
Tue 10/272:10 pm
SAT
- LHR
1 stop12h 40m
Delta
Wed 11/410:00 am
LHR
- SAT
2 stops19h 20m
Delta
Deal found 5/14![Delta logo]()
$874
This United Airlines deal was found by Cheapflights users on 5/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/24:12 pm
SAT
- LHR
1 stop13h 23m
United Airlines
Tue 9/82:10 pm
LHR
- SAT
2 stops27h 42m
United Airlines
Deal found 5/17![United Airlines logo]()
$887
This Scandinavian Airlines deal was found by Cheapflights users on 5/16. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:10 pm
SAT
- LHR
2 stops20h 30m
Scandinavian Airlines
Wed 11/47:05 am
LHR
- SAT
3 stops23h 23m
Scandinavian Airlines
Deal found 5/16![Scandinavian Airlines logo]()
$915
This Delta deal was found by Cheapflights users on 5/14. 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.
Tue 9/2910:45 am
SAT
- LHR
1 stop14h 30m
Delta
Tue 10/139:55 am
LHR
- SAT
2 stops16h 27m
Delta
Deal found 5/14![Delta logo]()
$874
This United Airlines deal was found by Cheapflights users on 5/16. 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.
Wed 8/125:59 pm
SAT
- LHR
1 stop11h 36m
United Airlines
Wed 8/1912:05 pm
LHR
- SAT
1 stop15h 08m
United Airlines
Deal found 5/16![United Airlines logo]()
$960
This Delta deal was found by Cheapflights users on 5/14. 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.
Tue 10/610:45 am
SAT
- LHR
2 stops16h 05m
Delta
Mon 10/126:30 am
LHR
- SAT
2 stops16h 48m
Delta
Deal found 5/14![Delta logo]()
$929
This United Airlines deal was found by Cheapflights users on 5/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:58 pm
SAT
- LHR
1 stop11h 37m
United Airlines
Mon 10/1212:05 pm
LHR
- SAT
1 stop15h 08m
United Airlines
Deal found 5/17![United Airlines logo]()
$1,000
This Delta deal was found by Cheapflights users on 5/13. 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.
Wed 9/236:45 am
SAT
- LHR
2 stops18h 25m
Delta
Mon 10/59:55 am
LHR
- SAT
2 stops16h 15m
Delta
Deal found 5/13![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:30 am
SAT
- LHR
1 stop18h 55m
Delta
Mon 9/76:30 am
LHR
- SAT
2 stops16h 46m
Delta
Deal found 5/16![Delta logo]()
$973
This United Airlines deal was found by Cheapflights users on 5/15. 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.
Sat 7/44:18 pm
SAT
- LHR
2 stops22h 22m
United Airlines
Tue 7/149:30 am
LHR
- SAT
2 stops36h 59m
United Airlines
Deal found 5/15![United Airlines logo]()
$1,086
Last-minute flights from San Antonio to HeathrowDiscover last-minute flight deals from San Antonio to Heathrow. Data last updated May 19, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated May 19, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 5/17. 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.
Mon 5/188:48 am
SAT
- LHR
2 stops19h 12m
Multiple Airlines
Tue 6/29:30 am
LHR
- SAT
2 stops19h 28m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$1,118
This Expedia deal was found by Cheapflights users on 5/17. 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.
Mon 5/186:21 pm
SAT
- LHR
1 stop12h 54m
KLM
Tue 6/211:45 am
LHR
- SAT
2 stops18h 59m
KLM
Deal found 5/17![KLM logo]()
$1,127
This United Airlines deal was found by Cheapflights users on 5/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/182:00 pm
SAT
- LHR
1 stop12h 30m
United Airlines
Tue 6/212:15 pm
LHR
- SAT
1 stop14h 07m
United Airlines
Deal found 5/17![United Airlines logo]()
$1,132
This United Airlines deal was found by Cheapflights users on 5/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:02 pm
SAT
- LHR
1 stop31h 53m
United Airlines
Sun 5/315:40 pm
LHR
- SAT
1 stop33h 38m
United Airlines
Deal found 5/18![United Airlines logo]()
$1,192
This Air Canada deal was found by Cheapflights users on 5/14. 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.
Tue 5/198:48 am
SAT
- LHR
2 stops19h 12m
Air Canada
Tue 5/262:05 pm
LHR
- SAT
2 stops31h 58m
Air Canada
Deal found 5/14![Air Canada logo]()
$1,131
This oojo deal was found by Cheapflights users on 5/14. 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.
Tue 5/191:32 pm
SAT
- LHR
1 stop12h 33m
British Airways
Tue 5/264:25 pm
LHR
- SAT
1 stop13h 34m
British Airways
Deal found 5/14![British Airways logo]()
$1,143
This United Airlines deal was found by Cheapflights users on 5/14. 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 5/192:25 pm
SAT
- LHR
1 stop11h 30m
United Airlines
Tue 5/261:40 pm
LHR
- SAT
1 stop13h 33m
United Airlines
Deal found 5/14![United Airlines logo]()
$1,147
This Delta deal was found by Cheapflights users on 5/14. 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.
Wed 5/205:20 am
SAT
- LHR
1 stop19h 50m
Delta
Wed 6/36:30 am
LHR
- SAT
2 stops17h 53m
Delta
Deal found 5/14![Delta logo]()
$1,142
This Travelocity deal was found by Cheapflights users on 5/16. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/168:30 am
SAT
- LHR
2 stops32h 25m
Multiple Airlines
Tue 6/307:50 pm
LHR
- SAT
2 stops31h 23m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$1,148
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 May 19, 2026.
Search for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated May 19, 2026.
This eDestinos deal was found by Cheapflights users on 5/17. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:10 pm
SAT
- LHR
1 stop16h 10m
Virgin Atlantic
Deal found 5/17![Virgin Atlantic logo]()
$287
This oojo deal was found by Cheapflights users on 5/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:56 pm
SAT
- LHR
1 stop11h 29m
British Airways
Deal found 5/18![British Airways logo]()
$331
This United Airlines deal was found by Cheapflights users on 5/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:30 am
SAT
- LHR
2 stops19h 45m
United Airlines
Deal found 5/18![United Airlines logo]()
$332
This United Airlines deal was found by Cheapflights users on 5/15. 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.
Fri 9/45:59 pm
SAT
- LHR
2 stops21h 26m
United Airlines
Deal found 5/15![United Airlines logo]()
$382
This Air Canada deal was found by Cheapflights users on 5/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/259:47 am
SAT
- LHR
3 stops18h 13m
Air Canada
Deal found 5/13![Air Canada logo]()
$394
This Justfly.com deal was found by Cheapflights users on 5/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:00 am
SAT
- LHR
2 stops24h 40m
Aer Lingus
Deal found 5/17![Aer Lingus logo]()
$429
This KLM deal was found by Cheapflights users on 5/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:05 pm
SAT
- LHR
1 stop13h 00m
KLM
Deal found 5/18![KLM logo]()
$463
This Trip.com deal was found by Cheapflights users on 5/15. 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.
Sat 8/16:00 am
SAT
- LHR
2 stops25h 30m
Aer Lingus
Deal found 5/15![Aer Lingus logo]()
$487
This Cheapflightsfares deal was found by Cheapflights users on 5/15. 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.
Sat 7/46:00 am
SAT
- LHR
2 stops21h 05m
Aer Lingus
Deal found 5/15![Aer Lingus logo]()
$505
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Fri 9/411:30 am
SAT
- LHR
3 stops18h 25m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$506
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 May 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $761 (United Airlines) |
One-way from | $287 (eDestinos) |
Popular in | June |
Cheapest in | October |
Average price | $986 |
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 May 19, 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
Tue 10/27
2:10 pm-7:50 am
1 stop12h 40m
London Heathrow
Wed 11/4
10:00 am-11:20 pm
2 stops19h 20m
$874
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 9/29
10:45 am-7:15 am
1 stop14h 30m
London Heathrow
Tue 10/13
9:55 am-8:22 pm
2 stops16h 27m
$874
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 9/2
4:12 pm-11:35 am
1 stop13h 23m
London Heathrow
Tue 9/8
2:10 pm-11:52 am
2 stops27h 42m
$887
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 10/27
4:10 pm-5:40 pm
2 stops20h 30m
London Heathrow
Wed 11/4
7:05 am-12:28 am
3 stops23h 23m
$915
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 10/6
10:45 am-8:50 am
2 stops16h 05m
London Heathrow
Mon 10/12
6:30 am-5:18 pm
2 stops16h 48m
$929
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 9/23
6:45 am-7:10 am
2 stops18h 25m
London Heathrow
Mon 10/5
9:55 am-8:10 pm
2 stops16h 15m
$930
Quickest round-trip
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 8/12
5:59 pm-11:35 am
1 stop11h 36m
London Heathrow
Wed 8/19
12:05 pm-9:13 pm
1 stop15h 08m
$960
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 9/4
5:30 am-6:25 am
1 stop18h 55m
London Heathrow
Mon 9/7
6:30 am-5:16 pm
2 stops16h 46m
$973
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 10/8
5:58 pm-11:35 am
1 stop11h 37m
London Heathrow
Mon 10/12
12:05 pm-9:13 pm
1 stop15h 08m
$1,000
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sat 7/4
4:18 pm-8:40 pm
2 stops22h 22m
London Heathrow
Tue 7/14
9:30 am-4:29 pm
2 stops36h 59m
$1,086
Showing 1-10 of 21 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 May.
| 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 $604). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $1,286). 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 May 19, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andVirgin Atlantic 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.
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.2
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
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Dorking
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
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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 May 19, 2026.
San Antonio and Heathrow flights
Browse other San Antonio and Heathrow flight options. Last updated on May 19, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from San Antonio to Heathrow
Discover the top 6 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 May 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$529 | Average$924 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$530 | Average$678 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$530 | Average$939 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$556 | Average$842 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$600 | Average$780 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$611 | Average$1,067 | FlexibilityNo cancel fee | On-time77% |