$290+ 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 5 — Jun 121
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 6, 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 6, 2026.
This United Airlines deal was found by Cheapflights users on 5/2. 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 11/143:00 pm
SAT
- LHR
1 stop34h 25m
United Airlines
Tue 11/176:50 am
LHR
- SAT
2 stops19h 16m
United Airlines
Deal found 5/2![United Airlines logo]()
$749
This United Airlines deal was found by Cheapflights users on 5/4. 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 11/1612:50 pm
SAT
- LHR
1 stop16h 15m
United Airlines
Wed 11/189:30 am
LHR
- SAT
2 stops17h 37m
United Airlines
Deal found 5/4![United Airlines logo]()
$756
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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 12/302:01 pm
SAT
- LHR
2 stops19h 49m
Lufthansa
Thu 1/146:35 am
LHR
- SAT
2 stops20h 32m
Lufthansa
Deal found 5/1![Lufthansa logo]()
$868
This Iberia deal was found by Cheapflights users on 5/4. 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.
Tue 10/2712:39 pm
SAT
- LHR
1 stop14h 36m
Iberia
Wed 11/47:35 am
LHR
- SAT
2 stops18h 06m
Iberia
Deal found 5/4![Iberia logo]()
$869
This United Airlines deal was found by Cheapflights users on 5/1. 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 10/2512:24 pm
SAT
- LHR
1 stop14h 06m
United Airlines
Wed 11/186:50 am
LHR
- SAT
2 stops19h 16m
United Airlines
Deal found 5/1![United Airlines logo]()
$873
This Delta deal was found by Cheapflights users on 5/1. 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 12/306:30 am
SAT
- LHR
1 stop18h 35m
Delta
Thu 1/1411:45 am
LHR
- SAT
2 stops18h 43m
Delta
Deal found 5/1![Delta logo]()
$874
This Virgin Atlantic deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:10 pm
SAT
- LHR
1 stop12h 35m
Virgin Atlantic
Tue 9/229:55 am
LHR
- SAT
2 stops16h 15m
Virgin Atlantic
Deal found 5/5![Virgin Atlantic logo]()
$875
This FlightHub deal was found by Cheapflights users on 5/3. 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.
Sun 9/62:10 pm
SAT
- LHR
2 stops21h 30m
Scandinavian Airlines
Sat 9/196:40 am
LHR
- SAT
2 stops23h 35m
Scandinavian Airlines
Deal found 5/3![Scandinavian Airlines logo]()
$876
This FlightHub deal was found by Cheapflights users on 5/5. 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 11/912:15 pm
SAT
- LHR
2 stops21h 45m
Scandinavian Airlines
Sat 11/146:40 am
LHR
- SAT
2 stops22h 38m
Scandinavian Airlines
Deal found 5/5![Scandinavian Airlines logo]()
$877
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 6, 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 6, 2026.
This Delta deal was found by Cheapflights users on 5/1. 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 8/1212:10 pm
SAT
- LHR
1 stop13h 05m
Delta
Wed 8/196:30 am
LHR
- SAT
2 stops16h 39m
Delta
Deal found 5/1![Delta logo]()
$874
This United Airlines deal was found by Cheapflights users on 5/4. 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 7/75:40 am
SAT
- LHR
1 stop24h 45m
United Airlines
Tue 7/145:40 pm
LHR
- SAT
1 stop33h 33m
United Airlines
Deal found 5/4![United Airlines logo]()
$1,092
This Delta deal was found by Cheapflights users on 5/5. 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 9/910:45 am
SAT
- LHR
2 stops17h 35m
Delta
Tue 9/229:55 am
LHR
- SAT
2 stops16h 15m
Delta
Deal found 5/5![Delta logo]()
$879
This Delta deal was found by Cheapflights users on 5/4. 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 11/46:30 am
LHR
- SAT
2 stops17h 14m
Delta
Deal found 5/4![Delta logo]()
$879
This Delta deal was found by Cheapflights users on 5/3. 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 11/212:15 pm
SAT
- LHR
1 stop12h 10m
Delta
Tue 11/1012:30 pm
LHR
- SAT
1 stop13h 52m
Delta
Deal found 5/3![Delta logo]()
$903
This United Airlines deal was found by Cheapflights users on 5/3. 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 7/1912:01 pm
SAT
- LHR
1 stop16h 39m
United Airlines
Mon 7/279:30 am
LHR
- SAT
2 stops31h 29m
United Airlines
Deal found 5/3![United Airlines logo]()
$1,111
This United Airlines deal was found by Cheapflights users on 5/2. 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
Tue 7/217:45 am
LHR
- SAT
1 stop13h 36m
United Airlines
Deal found 5/2![United Airlines logo]()
$1,114
This Delta deal was found by Cheapflights users on 5/5. 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 9/1810:45 am
SAT
- LHR
2 stops17h 35m
Delta
Tue 9/228:40 am
LHR
- SAT
2 stops17h 30m
Delta
Deal found 5/5![Delta logo]()
$929
This United Airlines deal was found by Cheapflights users on 5/1. 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 5/167:10 pm
SAT
- LHR
1 stop30h 35m
United Airlines
Thu 6/41:40 pm
LHR
- SAT
1 stop13h 33m
United Airlines
Deal found 5/1![United Airlines logo]()
$1,152
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/162:15 pm
SAT
- LHR
1 stop11h 30m
United Airlines
Wed 7/228:30 am
LHR
- SAT
1 stop18h 43m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 5/2. 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
Mon 7/209:30 am
LHR
- SAT
2 stops17h 43m
United Airlines
Deal found 5/2![United Airlines logo]()
$1,182
Last-minute flights from San Antonio to HeathrowDiscover last-minute flight deals from San Antonio to Heathrow. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated May 6, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/4. 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 5/56:02 pm
SAT
- LHR
1 stop11h 33m
United Airlines
Mon 5/111:35 pm
LHR
- SAT
2 stops38h 00m
United Airlines
Deal found 5/4![United Airlines logo]()
$1,039
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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 5/612:29 pm
SAT
- LHR
2 stops18h 11m
Lufthansa
Tue 5/129:00 am
LHR
- SAT
2 stops19h 54m
Lufthansa
Deal found 5/1![Lufthansa logo]()
$1,025
This Delta deal was found by Cheapflights users on 5/1. 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 5/66:20 am
SAT
- LHR
1 stop18h 05m
Delta
Tue 5/126:30 am
LHR
- SAT
2 stops17h 53m
Delta
Deal found 5/1![Delta logo]()
$1,028
This United Airlines deal was found by Cheapflights users on 5/1. 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 5/65:30 am
SAT
- LHR
1 stop24h 05m
United Airlines
Tue 5/125:40 pm
LHR
- SAT
1 stop33h 38m
United Airlines
Deal found 5/1![United Airlines logo]()
$1,042
This Cheapflightsfares deal was found by Cheapflights users on 5/2. 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 5/1012:29 pm
SAT
- LHR
2 stops21h 11m
Lufthansa
Tue 5/199:00 am
LHR
- SAT
2 stops19h 54m
Lufthansa
Deal found 5/2![Lufthansa logo]()
$1,015
This Expedia deal was found by Cheapflights users on 5/2. 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.
Sun 5/101:32 pm
SAT
- LHR
1 stop12h 33m
Iberia
Tue 5/1911:30 am
LHR
- SAT
2 stops17h 22m
Iberia
Deal found 5/2![Iberia logo]()
$1,023
This Delta deal was found by Cheapflights users on 5/5. 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 5/1211:50 am
SAT
- LHR
1 stop13h 20m
Delta
Tue 5/198:40 am
LHR
- SAT
2 stops18h 06m
Delta
Deal found 5/5![Delta logo]()
$1,029
This Delta deal was found by Cheapflights users on 5/1. 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 5/127:55 am
SAT
- LHR
2 stops17h 15m
Delta
Thu 8/206:30 am
LHR
- SAT
2 stops16h 39m
Delta
Deal found 5/1![Delta logo]()
$1,032
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 6, 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 6, 2026.
This eDestinos deal was found by Cheapflights users on 5/3. 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 9/112:15 pm
SAT
- LHR
1 stop12h 10m
Virgin Atlantic
Deal found 5/3![Virgin Atlantic logo]()
$290
This United Airlines deal was found by Cheapflights users on 5/3. 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 9/18:53 am
SAT
- LHR
2 stops16h 02m
United Airlines
Deal found 5/3![United Airlines logo]()
$328
This oojo deal was found by Cheapflights users on 5/5. 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 9/19:16 am
SAT
- LHR
1 stop17h 44m
British Airways
Deal found 5/5![British Airways logo]()
$331
This oojo deal was found by Cheapflights users on 5/3. 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.
Sat 8/225:35 pm
SAT
- LHR
1 stop33h 30m
British Airways
Deal found 5/3![British Airways logo]()
$342
This Air Canada deal was found by Cheapflights users on 5/1. 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 5/1![Air Canada logo]()
$344
This oojo deal was found by Cheapflights users on 5/4. 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.
Wed 7/151:30 pm
SAT
- LHR
2 stops18h 00m
Aer Lingus
Deal found 5/4![Aer Lingus logo]()
$458
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 8/227:51 pm
SAT
- LHR
3 stops43h 44m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$521
This Justfly.com deal was found by Cheapflights users on 5/4. 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.
Tue 5/121:19 pm
SAT
- LHR
2 stops23h 36m
Aer Lingus
Deal found 5/4![Aer Lingus logo]()
$523
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 9/17:51 pm
SAT
- LHR
3 stops39h 59m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$529
This oojo deal was found by Cheapflights users on 5/1. 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 5/116:23 am
SAT
- LHR
2 stops25h 07m
Aer Lingus
Deal found 5/1![Aer Lingus logo]()
$534
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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 7/196:00 am
SAT
- LHR
2 stops21h 05m
Aer Lingus
Deal found 5/1![Aer Lingus logo]()
$548
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 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $869 (Iberia) |
One-way from | $290 (eDestinos) |
Popular in | June |
Cheapest in | October |
Average price | $992 |
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 6, 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 8/12
12:10 pm-7:15 am
1 stop13h 05m
London Heathrow
Wed 8/19
6:30 am-5:09 pm
2 stops16h 39m
$874
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 9/9
10:45 am-10:20 am
2 stops17h 35m
London Heathrow
Tue 9/22
9:55 am-8:10 pm
2 stops16h 15m
$879
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 10/27
2:00 pm-8:45 am
2 stops13h 45m
London Heathrow
Wed 11/4
6:30 am-5:44 pm
2 stops17h 14m
$879
Quickest round-trip
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 11/2
12:15 pm-6:25 am
1 stop12h 10m
London Heathrow
Tue 11/10
12:30 pm-8:22 pm
1 stop13h 52m
$903
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 9/18
10:45 am-10:20 am
2 stops17h 35m
London Heathrow
Tue 9/22
8:40 am-8:10 pm
2 stops17h 30m
$929
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 7/7
5:40 am-12:25 pm
1 stop24h 45m
London Heathrow
Tue 7/14
5:40 pm-9:13 pm
1 stop33h 33m
$1,092
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sun 7/19
12:01 pm-10:40 am
1 stop16h 39m
London Heathrow
Mon 7/27
9:30 am-10:59 am
2 stops31h 29m
$1,111
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 7/17
4:18 pm-8:40 pm
2 stops22h 22m
London Heathrow
Tue 7/21
7:45 am-3:21 pm
1 stop13h 36m
$1,114
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sat 5/16
7:10 pm-7:45 am
1 stop30h 35m
London Heathrow
Thu 6/4
1:40 pm-9:13 pm
1 stop13h 33m
$1,152
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 7/16
2:15 pm-7:45 am
1 stop11h 30m
London Heathrow
Wed 7/22
8:30 am-9:13 pm
1 stop18h 43m
$1,165
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 28 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 $1,288). 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 6, 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.
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
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
Eastbourne
Slough
Browse thousands of different options on Cheapflights for your next trip
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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 6, 2026.
San Antonio and Heathrow flights
Browse other San Antonio and Heathrow flight options. Last updated on May 6, 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 6, 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 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$529 | Average$924 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$530 | Average$674 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$530 | Average$937 | 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% |