$222+ 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 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
Mar 27 — Apr 31
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Antonio to Heathrow
Cheapest
Best
Last-minute
One-way
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 February 25, 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 February 25, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 8/195:00 pm
SAT
- LHR
2 stops18h 40m
Lufthansa
Mon 8/318:25 pm
LHR
- SAT
2 stops30h 42m
Lufthansa
Deal found 2/21![Lufthansa logo]()
$652
This Air Canada deal was found by Cheapflights users on 2/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:00 am
SAT
- LHR
1 stop15h 35m
Air Canada
Fri 9/42:05 pm
LHR
- SAT
2 stops31h 16m
Air Canada
Deal found 2/22![Air Canada logo]()
$668
This Air Canada deal was found by Cheapflights users on 2/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:45 am
SAT
- LHR
2 stops18h 50m
Air Canada
Wed 9/22:05 pm
LHR
- SAT
2 stops31h 16m
Air Canada
Deal found 2/22![Air Canada logo]()
$673
This oojo deal was found by Cheapflights users on 2/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:17 pm
SAT
- LHR
1 stop16h 33m
British Airways
Wed 8/199:15 am
LHR
- SAT
1 stop18h 45m
British Airways
Deal found 2/24![British Airways logo]()
$679
This United Airlines deal was found by Cheapflights users on 2/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:55 am
SAT
- LHR
2 stops16h 00m
United Airlines
Wed 9/212:05 pm
LHR
- SAT
1 stop15h 08m
United Airlines
Deal found 2/22![United Airlines logo]()
$682
This United Airlines deal was found by Cheapflights users on 2/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/192:15 pm
SAT
- LHR
1 stop11h 25m
United Airlines
Tue 9/18:00 am
LHR
- SAT
1 stop13h 38m
United Airlines
Deal found 2/22![United Airlines logo]()
$684
This Air Canada deal was found by Cheapflights users on 2/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:30 am
SAT
- LHR
2 stops17h 00m
Air Canada
Thu 9/35:40 pm
LHR
- SAT
1 stop33h 33m
Air Canada
Deal found 2/22![Air Canada logo]()
$686
This Virgin Atlantic deal was found by Cheapflights users on 2/24. 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.
Wed 9/1612:10 pm
SAT
- LHR
1 stop12h 35m
Virgin Atlantic
Tue 9/2912:50 pm
LHR
- SAT
2 stops17h 25m
Virgin Atlantic
Deal found 2/24![Virgin Atlantic logo]()
$687
This Delta deal was found by Cheapflights users on 2/23. 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.
Sun 11/226:15 pm
SAT
- LHR
1 stop30h 10m
Delta
Thu 12/312:30 pm
LHR
- SAT
1 stop13h 52m
Delta
Deal found 2/23![Delta logo]()
$688
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 February 25, 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 February 25, 2026.
This Delta deal was found by Cheapflights users on 2/22. 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 3/2412:24 pm
SAT
- LHR
2 stops15h 21m
Delta
Tue 3/3111:45 am
LHR
- SAT
2 stops18h 53m
Delta
Deal found 2/22![Delta logo]()
$703
This United Airlines deal was found by Cheapflights users on 2/23. 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.
Mon 4/132:02 pm
SAT
- LHR
2 stops14h 38m
United Airlines
Mon 5/47:25 am
LHR
- SAT
2 stops19h 10m
United Airlines
Deal found 2/23![United Airlines logo]()
$768
This KLM deal was found by Cheapflights users on 2/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1012:22 pm
SAT
- LHR
1 stop12h 23m
KLM
Sat 4/1811:45 am
LHR
- SAT
1 stop16h 07m
KLM
Deal found 2/24![KLM logo]()
$842
This United Airlines deal was found by Cheapflights users on 2/23. 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.
Wed 4/2212:15 pm
SAT
- LHR
1 stop13h 00m
United Airlines
Sat 5/22:05 pm
LHR
- SAT
2 stops38h 44m
United Airlines
Deal found 2/23![United Airlines logo]()
$772
This Delta deal was found by Cheapflights users on 2/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/221:15 pm
SAT
- LHR
1 stop19h 20m
Delta
Sat 5/211:30 am
LHR
- SAT
2 stops17h 38m
Delta
Deal found 2/25![Delta logo]()
$831
This United Airlines deal was found by Cheapflights users on 2/21. 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 stop11h 33m
United Airlines
Wed 5/2712:05 pm
LHR
- SAT
1 stop15h 13m
United Airlines
Deal found 2/21![United Airlines logo]()
$824
This United Airlines deal was found by Cheapflights users on 2/21. 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 5/1912:09 pm
SAT
- LHR
1 stop12h 46m
United Airlines
Fri 5/2912:05 pm
LHR
- SAT
1 stop15h 13m
United Airlines
Deal found 2/21![United Airlines logo]()
$824
This United Airlines deal was found by Cheapflights users on 2/23. 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 5/156:15 am
SAT
- LHR
1 stop19h 10m
United Airlines
Mon 5/258:30 am
LHR
- SAT
1 stop18h 48m
United Airlines
Deal found 2/23![United Airlines logo]()
$944
This United Airlines deal was found by Cheapflights users on 2/21. 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 5/218:35 am
SAT
- LHR
1 stop16h 00m
United Airlines
Sat 5/3012:15 pm
LHR
- SAT
1 stop14h 22m
United Airlines
Deal found 2/21![United Airlines logo]()
$950
This United Airlines deal was found by Cheapflights users on 2/21. 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 7/65:57 pm
SAT
- LHR
1 stop11h 38m
United Airlines
Mon 7/1312:05 pm
LHR
- SAT
1 stop15h 08m
United Airlines
Deal found 2/21![United Airlines logo]()
$993
This United Airlines deal was found by Cheapflights users on 2/21. 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 7/234:35 pm
SAT
- LHR
1 stop13h 45m
United Airlines
Sat 8/17:45 am
LHR
- SAT
1 stop13h 36m
United Airlines
Deal found 2/21![United Airlines logo]()
$1,004
This United Airlines deal was found by Cheapflights users on 2/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/234:18 pm
SAT
- LHR
1 stop33h 22m
United Airlines
Sun 6/215:40 pm
LHR
- SAT
1 stop33h 33m
United Airlines
Deal found 2/22![United Airlines logo]()
$1,170
Last-minute flights from San Antonio to HeathrowDiscover last-minute flight deals from San Antonio to Heathrow. Data last updated February 25, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated February 25, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 2/21. 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 3/218:26 pm
SAT
- LHR
1 stop29h 24m
British Airways
Tue 3/314:25 pm
LHR
- SAT
1 stop21h 58m
British Airways
Deal found 2/21![British Airways logo]()
$727
This Delta deal was found by Cheapflights users on 2/21. 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 3/216:13 am
SAT
- LHR
1 stop19h 12m
Delta
Tue 3/3111:45 am
LHR
- SAT
2 stops18h 53m
Delta
Deal found 2/21![Delta logo]()
$749
This United Airlines deal was found by Cheapflights users on 2/21. 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 3/222:20 pm
SAT
- LHR
1 stop12h 35m
United Airlines
Tue 3/318:00 am
LHR
- SAT
1 stop14h 09m
United Airlines
Deal found 2/21![United Airlines logo]()
$726
This United Airlines deal was found by Cheapflights users on 2/21. 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 3/225:50 pm
SAT
- LHR
1 stop11h 25m
United Airlines
Thu 4/21:40 pm
LHR
- SAT
1 stop13h 23m
United Airlines
Deal found 2/21![United Airlines logo]()
$742
This Delta deal was found by Cheapflights users on 2/22. 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 3/246:13 am
SAT
- LHR
1 stop20h 37m
Delta
Tue 3/3111:45 am
LHR
- SAT
2 stops18h 53m
Delta
Deal found 2/22![Delta logo]()
$699
This oojo deal was found by Cheapflights users on 2/22. 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.
Tue 3/246:25 pm
SAT
- LHR
1 stop12h 50m
British Airways
Tue 3/313:15 pm
LHR
- SAT
1 stop14h 41m
British Airways
Deal found 2/22![British Airways logo]()
$721
This FlightHub deal was found by Cheapflights users on 2/25. 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.
Wed 3/255:53 pm
SAT
- LHR
1 stop13h 07m
British Airways
Tue 3/313:15 pm
LHR
- SAT
1 stop14h 41m
British Airways
Deal found 2/25![British Airways logo]()
$744
This United Airlines deal was found by Cheapflights users on 2/25. 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.
Wed 3/252:20 pm
SAT
- LHR
1 stop12h 10m
United Airlines
Tue 3/318:00 am
LHR
- SAT
2 stops17h 48m
United Airlines
Deal found 2/25![United Airlines logo]()
$751
This FlightHub deal was found by Cheapflights users on 2/25. 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.
Wed 3/255:53 pm
SAT
- LHR
1 stop13h 07m
British Airways
Wed 4/19:15 am
LHR
- SAT
1 stop13h 48m
British Airways
Deal found 2/25![British Airways logo]()
$760
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 February 25, 2026.
Search for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated February 25, 2026.
This KLM deal was found by Cheapflights users on 2/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2612:50 pm
SAT
- LHR
1 stop12h 20m
KLM
Deal found 2/24![KLM logo]()
$222
This United Airlines deal was found by Cheapflights users on 2/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:45 am
SAT
- LHR
3 stops26h 25m
United Airlines
Deal found 2/22![United Airlines logo]()
$223
This United Airlines deal was found by Cheapflights users on 2/21. 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 8/156:40 am
SAT
- LHR
2 stops41h 50m
United Airlines
Deal found 2/21![United Airlines logo]()
$227
This Booking.com deal was found by Cheapflights users on 2/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:00 pm
SAT
- LHR
2 stops55h 30m
Air Canada
Deal found 2/22![Air Canada logo]()
$228
This oojo deal was found by Cheapflights users on 2/21. 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 8/152:17 pm
SAT
- LHR
1 stop34h 38m
British Airways
Deal found 2/21![British Airways logo]()
$233
This oojo deal was found by Cheapflights users on 2/22. 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.
Fri 8/141:22 pm
SAT
- LHR
1 stop13h 43m
British Airways
Deal found 2/22![British Airways logo]()
$272
This Orbitz deal was found by Cheapflights users on 2/24. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/169:00 am
SAT
- LHR
2 stops54h 00m
Air Canada
Deal found 2/24![Air Canada logo]()
$287
This United Airlines deal was found by Cheapflights users on 2/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:45 am
SAT
- LHR
3 stops43h 40m
United Airlines
Deal found 2/22![United Airlines logo]()
$296
This oojo deal was found by Cheapflights users on 2/21. 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 3/235:19 am
SAT
- LHR
2 stops22h 46m
Aer Lingus
Deal found 2/21![Aer Lingus logo]()
$306
This oojo deal was found by Cheapflights users on 2/23. 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.
Mon 8/176:05 am
SAT
- LHR
2 stops20h 00m
Aer Lingus
Deal found 2/23![Aer Lingus logo]()
$307
This oojo deal was found by Cheapflights users on 2/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/162:45 pm
SAT
- LHR
1 stop12h 15m
British Airways
Deal found 2/24![British Airways logo]()
$323
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 February 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $668 (Air Canada) |
One-way from | $222 (KLM) |
Popular in | June |
Cheapest in | October |
Average price | $693 |
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 February 25, 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
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 3/24
12:24 pm-8:45 am
2 stops15h 21m
London Heathrow
Tue 3/31
11:45 am-12:38 am
2 stops18h 53m
$703
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 4/13
2:02 pm-10:40 am
2 stops14h 38m
London Heathrow
Mon 5/4
7:25 am-8:35 pm
2 stops19h 10m
$768
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 4/22
12:15 pm-7:15 am
1 stop13h 00m
London Heathrow
Sat 5/2
2:05 pm-10:49 pm
2 stops38h 44m
$772
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 5/18
6:02 pm-11:35 am
1 stop11h 33m
London Heathrow
Wed 5/27
12:05 pm-9:18 pm
1 stop15h 13m
$824
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 5/19
12:09 pm-6:55 am
1 stop12h 46m
London Heathrow
Fri 5/29
12:05 pm-9:18 pm
1 stop15h 13m
$824
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 4/22
1:15 pm-2:35 pm
1 stop19h 20m
London Heathrow
Sat 5/2
11:30 am-11:08 pm
2 stops17h 38m
$831
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 4/10
12:22 pm-6:45 am
1 stop12h 23m
London Heathrow
Sat 4/18
11:45 am-9:52 pm
1 stop16h 07m
$842
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 5/15
6:15 am-7:25 am
1 stop19h 10m
London Heathrow
Mon 5/25
8:30 am-9:18 pm
1 stop18h 48m
$944
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 5/21
8:35 am-6:35 am
1 stop16h 00m
London Heathrow
Sat 5/30
12:15 pm-8:37 pm
1 stop14h 22m
$950
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 7/6
5:57 pm-11:35 am
1 stop11h 38m
London Heathrow
Mon 7/13
12:05 pm-9:13 pm
1 stop15h 08m
$993
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 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?
Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Heathrow. Price data was last updated on February 20, 2026.
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 29 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 $518). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $827). 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 February 25, 2026.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American 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.
Food
7.2
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Kingston upon Thames
Eastbourne
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Heathrow flight routes
Other flight options
Other flights from San Antonio
Popular flights
Alternative routes for San Antonio to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Heathrow by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Antonio to Heathrow by cabin class
Find flights from San Antonio to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Heathrow
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 25, 2026.
San Antonio and Heathrow flights
Browse other San Antonio and Heathrow flight options. Last updated on February 25, 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 February 25, 2026.
Popular flight searches
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 February 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$530 | Average$656 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$530 | Average$868 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$531 | Average$907 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$563 | Average$812 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$600 | Average$780 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$668 | Average$999 | FlexibilityNo cancel fee | On-time77% |