$289+ 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 10 — Jun 171
Round-trip
1 adult, Economy
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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 May 11, 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 11, 2026.
This United Airlines deal was found by Cheapflights users on 5/7. 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 11/164:20 pm
SAT
- LHR
2 stops23h 00m
United Airlines
Wed 11/189:30 am
LHR
- SAT
2 stops17h 37m
United Airlines
Deal found 5/7![United Airlines logo]()
$756
This Iberia deal was found by Cheapflights users on 5/10. 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 5/10![Iberia logo]()
$872
This Delta deal was found by Cheapflights users on 5/7. 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 12/3012:50 pm
SAT
- LHR
1 stop13h 55m
Delta
Thu 1/1411:45 am
LHR
- SAT
2 stops17h 35m
Delta
Deal found 5/7![Delta logo]()
$874
This Delta deal was found by Cheapflights users on 5/8. 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 12/3010:45 am
SAT
- LHR
1 stop16h 15m
Delta
Wed 1/1311:45 am
LHR
- SAT
2 stops18h 43m
Delta
Deal found 5/8![Delta logo]()
$875
This Air Canada deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:07 pm
SAT
- LHR
2 stops15h 53m
Multiple Airlines
Wed 8/198:40 am
LHR
- SAT
2 stops18h 33m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$877
This Cheapflightsfares deal was found by Cheapflights users on 5/7. 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 8/195:24 pm
SAT
- LHR
2 stops20h 16m
Lufthansa
Mon 8/318:25 pm
LHR
- SAT
2 stops30h 27m
Lufthansa
Deal found 5/7![Lufthansa logo]()
$878
This Delta deal was found by Cheapflights users on 5/11. 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 10/272:00 pm
SAT
- LHR
2 stops13h 45m
Delta
Wed 11/48:40 am
LHR
- SAT
2 stops17h 42m
Delta
Deal found 5/11![Delta logo]()
$879
This Air Canada deal was found by Cheapflights users on 5/10. 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 8/196:00 am
SAT
- LHR
2 stops20h 35m
Air Canada
Wed 8/262:10 pm
LHR
- SAT
2 stops26h 49m
Air Canada
Deal found 5/10![Air Canada logo]()
$881
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 11, 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 11, 2026.
This Delta deal was found by Cheapflights users on 5/9. 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 9/912:10 pm
SAT
- LHR
1 stop16h 10m
Delta
Tue 9/226:30 am
LHR
- SAT
2 stops16h 39m
Delta
Deal found 5/9![Delta logo]()
$875
This United Airlines deal was found by Cheapflights users on 5/10. 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 8/185:59 pm
SAT
- LHR
1 stop11h 36m
United Airlines
Wed 8/2612:05 pm
LHR
- SAT
1 stop15h 08m
United Airlines
Deal found 5/10![United Airlines logo]()
$902
This KLM deal was found by Cheapflights users on 5/8. 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.
Mon 8/246:04 pm
SAT
- LHR
1 stop13h 01m
KLM
Sun 9/63:15 pm
LHR
- SAT
1 stop15h 00m
KLM
Deal found 5/8![KLM logo]()
$954
This Delta deal was found by Cheapflights users on 5/9. 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 10/2710:45 am
SAT
- LHR
2 stops14h 35m
Delta
Wed 11/46:30 am
LHR
- SAT
2 stops17h 14m
Delta
Deal found 5/9![Delta logo]()
$879
This United Airlines deal was found by Cheapflights users on 5/10. 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 8/199:07 am
SAT
- LHR
2 stops15h 48m
United Airlines
Tue 8/255:40 pm
LHR
- SAT
1 stop33h 33m
United Airlines
Deal found 5/10![United Airlines logo]()
$902
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:29 pm
SAT
- LHR
1 stop11h 51m
Delta
Mon 8/241:25 pm
LHR
- SAT
1 stop13h 49m
Delta
Deal found 5/10![Delta logo]()
$954
This Delta deal was found by Cheapflights users on 5/10. 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 8/217:55 am
SAT
- LHR
1 stop16h 30m
Delta
Tue 8/251:25 pm
LHR
- SAT
1 stop13h 49m
Delta
Deal found 5/10![Delta logo]()
$954
This United Airlines deal was found by Cheapflights users on 5/7. 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 7/174:18 pm
SAT
- LHR
2 stops22h 22m
United Airlines
Wed 7/228:30 am
LHR
- SAT
1 stop18h 43m
United Airlines
Deal found 5/7![United Airlines logo]()
$1,112
This Delta deal was found by Cheapflights users on 5/8. 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 8/242:30 pm
SAT
- LHR
2 stops14h 50m
Delta
Sun 9/610:45 am
LHR
- SAT
2 stops15h 25m
Delta
Deal found 5/8![Delta logo]()
$959
This United Airlines deal was found by Cheapflights users on 5/8. 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 7/187:20 pm
SAT
- LHR
1 stop30h 25m
United Airlines
Sun 7/265:40 pm
LHR
- SAT
1 stop33h 33m
United Airlines
Deal found 5/8![United Airlines logo]()
$1,121
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2110:46 am
SAT
- LHR
2 stops15h 09m
Delta
Sat 8/298:40 am
LHR
- SAT
2 stops18h 34m
Delta
Deal found 5/6![Delta logo]()
$979
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:29 pm
SAT
- LHR
1 stop13h 46m
Delta
Sun 8/233:15 pm
LHR
- SAT
1 stop15h 13m
Delta
Deal found 5/10![Delta logo]()
$1,004
Last-minute flights from San Antonio to HeathrowDiscover last-minute flight deals from San Antonio to Heathrow. Data last updated May 11, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated May 11, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/7. 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 5/71:33 pm
SAT
- LHR
1 stop16h 37m
Delta
Tue 5/129:55 am
LHR
- SAT
2 stops17h 37m
Delta
Deal found 5/7![Delta logo]()
$1,078
This United Airlines deal was found by Cheapflights users on 5/7. 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 5/74:10 pm
SAT
- LHR
1 stop33h 45m
United Airlines
Tue 5/125:40 pm
LHR
- SAT
1 stop33h 38m
United Airlines
Deal found 5/7![United Airlines logo]()
$1,093
This Expedia deal was found by Cheapflights users on 5/8. 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.
Sat 5/97:10 pm
SAT
- LHR
2 stops29h 20m
Multiple Airlines
Sat 5/166:30 am
LHR
- SAT
2 stops22h 24m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,099
This Delta deal was found by Cheapflights users on 5/7. 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 5/126:50 am
SAT
- LHR
1 stop18h 25m
Delta
Thu 8/206:30 am
LHR
- SAT
2 stops17h 40m
Delta
Deal found 5/7![Delta logo]()
$1,028
This United Airlines deal was found by Cheapflights users on 5/7. 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 5/125:30 am
SAT
- LHR
1 stop24h 05m
United Airlines
Thu 8/205:40 pm
LHR
- SAT
1 stop33h 33m
United Airlines
Deal found 5/7![United Airlines logo]()
$1,043
This Air Canada deal was found by Cheapflights users on 5/8. 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 5/126:49 am
SAT
- LHR
2 stops17h 41m
Air Canada
Wed 5/272:05 pm
LHR
- SAT
2 stops28h 07m
Air Canada
Deal found 5/8![Air Canada logo]()
$1,086
This Air Canada deal was found by Cheapflights users on 5/8. 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 5/128:30 am
SAT
- LHR
1 stop18h 05m
Air Canada
Fri 5/292:05 pm
LHR
- SAT
2 stops28h 18m
Air Canada
Deal found 5/8![Air Canada logo]()
$1,087
This United Airlines deal was found by Cheapflights users on 5/8. 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 5/1312:20 pm
SAT
- LHR
1 stop12h 55m
United Airlines
Wed 5/2712:05 pm
LHR
- SAT
1 stop15h 13m
United Airlines
Deal found 5/8![United Airlines logo]()
$1,101
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 11, 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 11, 2026.
This eDestinos deal was found by Cheapflights users on 5/10. 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 5/10![Virgin Atlantic logo]()
$289
This United Airlines deal was found by Cheapflights users on 5/10. 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 9/19:07 am
SAT
- LHR
2 stops15h 48m
United Airlines
Deal found 5/10![United Airlines logo]()
$328
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:30 pm
SAT
- LHR
1 stop31h 45m
Delta
Deal found 5/11![Delta logo]()
$343
This Air Canada deal was found by Cheapflights users on 5/8. 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.
Mon 9/219:37 am
SAT
- LHR
3 stops18h 23m
Air Canada
Deal found 5/8![Air Canada logo]()
$344
This Expedia deal was found by Cheapflights users on 5/10. 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.
Fri 11/67:00 pm
SAT
- LHR
2 stops53h 30m
Air Canada
Deal found 5/10![Air Canada logo]()
$352
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:30 pm
SAT
- LHR
1 stop13h 45m
Delta
Deal found 5/11![Delta logo]()
$382
This Air Canada deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:30 am
SAT
- LHR
3 stops17h 40m
Air Canada
Deal found 5/10![Air Canada logo]()
$394
This Justfly.com deal was found by Cheapflights users on 5/9. 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.
Wed 8/51:30 pm
SAT
- LHR
2 stops18h 00m
Aer Lingus
Deal found 5/9![Aer Lingus logo]()
$430
This Cheapflightsfares deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:30 pm
SAT
- LHR
2 stops18h 00m
Aer Lingus
Deal found 5/8![Aer Lingus logo]()
$449
This Mytrip deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:00 am
SAT
- LHR
3 stops30h 45m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$498
This Cheapflightsfares deal was found by Cheapflights users on 5/9. 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 7/116:00 am
SAT
- LHR
2 stops20h 05m
Aer Lingus
Deal found 5/9![Aer Lingus logo]()
$505
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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $872 (Iberia) |
One-way from | $289 (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 11, 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
Wed 9/9
12:10 pm-10:20 am
1 stop16h 10m
London Heathrow
Tue 9/22
6:30 am-5:09 pm
2 stops16h 39m
$875
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 10/27
10:45 am-6:20 am
2 stops14h 35m
London Heathrow
Wed 11/4
6:30 am-5:44 pm
2 stops17h 14m
$879
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 8/18
5:59 pm-11:35 am
1 stop11h 36m
London Heathrow
Wed 8/26
12:05 pm-9:13 pm
1 stop15h 08m
$902
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 8/19
9:07 am-6:55 am
2 stops15h 48m
London Heathrow
Tue 8/25
5:40 pm-9:13 pm
1 stop33h 33m
$902
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 8/24
6:04 pm-1:05 pm
1 stop13h 01m
London Heathrow
Sun 9/6
3:15 pm-12:15 am
1 stop15h 00m
$954
Quickest round-trip
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 8/18
5:29 pm-11:20 am
1 stop11h 51m
London Heathrow
Mon 8/24
1:25 pm-9:14 pm
1 stop13h 49m
$954
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 8/21
7:55 am-6:25 am
1 stop16h 30m
London Heathrow
Tue 8/25
1:25 pm-9:14 pm
1 stop13h 49m
$954
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 8/24
2:30 pm-11:20 am
2 stops14h 50m
London Heathrow
Sun 9/6
10:45 am-8:10 pm
2 stops15h 25m
$959
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 8/21
10:46 am-7:55 am
2 stops15h 09m
London Heathrow
Sat 8/29
8:40 am-9:14 pm
2 stops18h 34m
$979
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 8/20
5:29 pm-1:15 pm
1 stop13h 46m
London Heathrow
Sun 8/23
3:15 pm-12:28 am
1 stop15h 13m
$1,004
Showing 1-10 of 24 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 11, 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.
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
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
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Dorking
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 11, 2026.
San Antonio and Heathrow flights
Browse other San Antonio and Heathrow flight options. Last updated on May 11, 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 May 11, 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 11, 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% |