$307+ 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
Apr 26 — May 31
Round-trip
1 adult, Economy
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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 March 27, 2026.
Explore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.
This KAYAK deal was found by Cheapflights users on 3/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:15 pm
SAT
- LHR
2 stops39h 05m
Scandinavian Airlines
Mon 9/76:40 am
LHR
- SAT
2 stops22h 38m
Scandinavian Airlines
Deal found 3/24![Scandinavian Airlines logo]()
$753
This Cheapflightsfares deal was found by Cheapflights users on 3/25. 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 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 stops17h 16m
Lufthansa
Wed 9/29:00 am
LHR
- SAT
2 stops19h 55m
Lufthansa
Deal found 3/25![Lufthansa logo]()
$794
This Iberia deal was found by Cheapflights users on 3/24. 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 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 3/24![Iberia logo]()
$819
This Delta deal was found by Cheapflights users on 3/23. 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.
Wed 12/3012:50 pm
SAT
- LHR
1 stop13h 55m
Delta
Thu 1/148:40 am
LHR
- SAT
2 stops18h 52m
Delta
Deal found 3/23![Delta logo]()
$821
This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:00 am
SAT
- LHR
2 stops21h 40m
Lufthansa
Wed 8/197:30 pm
LHR
- SAT
2 stops31h 46m
Lufthansa
Deal found 3/24![Lufthansa logo]()
$822
This FlightHub deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:10 pm
SAT
- LHR
2 stops21h 50m
Scandinavian Airlines
Wed 10/146:40 am
LHR
- SAT
2 stops22h 38m
Scandinavian Airlines
Deal found 3/23![Scandinavian Airlines logo]()
$823
This Scandinavian Airlines deal was found by Cheapflights users on 3/25. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:25 pm
SAT
- LHR
2 stops24h 15m
Scandinavian Airlines
Tue 11/37:05 am
LHR
- SAT
3 stops22h 13m
Scandinavian Airlines
Deal found 3/25![Scandinavian Airlines logo]()
$828
This United Airlines deal was found by Cheapflights users on 3/23. 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 8/2612:07 pm
SAT
- LHR
1 stop12h 48m
United Airlines
Tue 9/152:05 pm
LHR
- SAT
2 stops32h 03m
United Airlines
Deal found 3/23![United Airlines logo]()
$830
This FlightHub deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:10 pm
SAT
- LHR
2 stops19h 50m
Scandinavian Airlines
Thu 9/36:40 am
LHR
- SAT
2 stops21h 35m
Scandinavian Airlines
Deal found 3/25![Scandinavian Airlines logo]()
$832
This Scandinavian Airlines deal was found by Cheapflights users on 3/25. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:10 pm
SAT
- LHR
3 stops23h 20m
Scandinavian Airlines
Wed 11/410:20 am
LHR
- SAT
2 stops18h 58m
Scandinavian Airlines
Deal found 3/25![Scandinavian Airlines logo]()
$833
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 March 27, 2026.
Discover carefully curated flight deals from San Antonio to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2026.
This United Airlines deal was found by Cheapflights users on 3/23. 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 8/268:53 am
SAT
- LHR
2 stops16h 02m
United Airlines
Tue 9/152:05 pm
LHR
- SAT
2 stops27h 35m
United Airlines
Deal found 3/23![United Airlines logo]()
$830
This Delta deal was found by Cheapflights users on 3/23. 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.
Mon 5/42:31 pm
SAT
- LHR
2 stops16h 44m
Delta
Wed 5/206:30 am
LHR
- SAT
2 stops17h 53m
Delta
Deal found 3/23![Delta logo]()
$885
This Scandinavian Airlines deal was found by Cheapflights users on 3/23. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:10 pm
SAT
- LHR
3 stops24h 40m
Scandinavian Airlines
Tue 9/157:05 am
LHR
- SAT
3 stops22h 13m
Scandinavian Airlines
Deal found 3/23![Scandinavian Airlines logo]()
$1,035
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Sat 5/27:10 pm
SAT
- LHR
1 stop34h 25m
United Airlines
Mon 5/114:25 pm
LHR
- SAT
2 stops34h 10m
United Airlines
Deal found 3/23![United Airlines logo]()
$897
This Delta deal was found by Cheapflights users on 3/22. 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.
Fri 5/11:55 pm
SAT
- LHR
1 stop11h 20m
Delta
Tue 5/59:55 am
LHR
- SAT
2 stops17h 35m
Delta
Deal found 3/22![Delta logo]()
$931
This United Airlines deal was found by Cheapflights users on 3/25. 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.
Sun 9/134:13 pm
SAT
- LHR
1 stop13h 22m
United Airlines
Tue 9/225:40 pm
LHR
- SAT
1 stop33h 33m
United Airlines
Deal found 3/25![United Airlines logo]()
$899
This Delta deal was found by Cheapflights users on 3/25. 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.
Sat 9/1212:50 pm
SAT
- LHR
2 stops16h 30m
Delta
Sun 9/208:40 am
LHR
- SAT
2 stops17h 30m
Delta
Deal found 3/25![Delta logo]()
$976
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:17 pm
SAT
- LHR
1 stop33h 28m
United Airlines
Thu 4/305:40 pm
LHR
- SAT
1 stop33h 38m
United Airlines
Deal found 3/26![United Airlines logo]()
$1,041
This Delta deal was found by Cheapflights users on 3/25. 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.
Tue 4/211:15 pm
SAT
- LHR
1 stop15h 05m
Delta
Sat 5/166:30 am
LHR
- SAT
2 stops17h 53m
Delta
Deal found 3/25![Delta logo]()
$1,076
This United Airlines deal was found by Cheapflights users on 3/22. 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 4/114:45 pm
SAT
- LHR
1 stop34h 55m
United Airlines
Sun 4/191:40 pm
LHR
- SAT
1 stop13h 23m
United Airlines
Deal found 3/22![United Airlines logo]()
$1,060
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Tue 7/75:30 am
SAT
- LHR
1 stop24h 50m
United Airlines
Tue 7/145:40 pm
LHR
- SAT
1 stop33h 33m
United Airlines
Deal found 3/23![United Airlines logo]()
$1,095
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Sat 5/166:02 pm
SAT
- LHR
1 stop11h 33m
United Airlines
Mon 5/258:30 am
LHR
- SAT
1 stop18h 48m
United Airlines
Deal found 3/23![United Airlines logo]()
$1,112
Last-minute flights from San Antonio to HeathrowDiscover last-minute flight deals from San Antonio to Heathrow. Data last updated March 27, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated March 27, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/22. 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.
Sun 4/1910:42 am
SAT
- LHR
1 stop13h 43m
Delta
Tue 5/58:40 am
LHR
- SAT
2 stops18h 50m
Delta
Deal found 3/22![Delta logo]()
$881
This KLM deal was found by Cheapflights users on 3/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:33 pm
SAT
- LHR
1 stop12h 42m
KLM
Tue 5/510:55 am
LHR
- SAT
1 stop19h 30m
KLM
Deal found 3/22![KLM logo]()
$906
This Cheapflightsfares deal was found by Cheapflights users on 3/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:50 pm
SAT
- LHR
2 stops20h 50m
Lufthansa
Tue 4/286:30 am
LHR
- SAT
2 stops22h 28m
Lufthansa
Deal found 3/22![Lufthansa logo]()
$858
This Scandinavian Airlines deal was found by Cheapflights users on 3/25. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/212:00 pm
SAT
- LHR
2 stops22h 30m
Scandinavian Airlines
Tue 4/286:40 am
LHR
- SAT
2 stops24h 06m
Scandinavian Airlines
Deal found 3/25![Scandinavian Airlines logo]()
$859
This oojo deal was found by Cheapflights users on 3/22. 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 4/214:28 pm
SAT
- LHR
1 stop12h 27m
British Airways
Tue 4/2812:55 pm
LHR
- SAT
1 stop15h 57m
British Airways
Deal found 3/22![British Airways logo]()
$907
This Air Canada deal was found by Cheapflights users on 3/22. 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 4/219:40 am
SAT
- LHR
3 stops18h 20m
Multiple Airlines
Tue 4/289:30 am
LHR
- SAT
2 stops19h 28m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$925
This Cheapflightsfares deal was found by Cheapflights users on 3/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:50 pm
SAT
- LHR
2 stops18h 35m
Lufthansa
Wed 4/298:30 am
LHR
- SAT
2 stops18h 10m
Lufthansa
Deal found 3/23![Lufthansa logo]()
$848
This FlightHub deal was found by Cheapflights users on 3/25. 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.
Tue 4/281:19 pm
SAT
- LHR
1 stop12h 21m
British Airways
Tue 5/510:50 am
LHR
- SAT
2 stops18h 02m
British Airways
Deal found 3/25![British Airways logo]()
$902
This Cheapflightsfares deal was found by Cheapflights users on 3/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2811:46 am
SAT
- LHR
2 stops16h 54m
Lufthansa
Tue 5/56:30 am
LHR
- SAT
2 stops22h 24m
Lufthansa
Deal found 3/25![Lufthansa logo]()
$904
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 March 27, 2026.
Search for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:53 am
SAT
- LHR
2 stops16h 02m
United Airlines
Deal found 3/24![United Airlines logo]()
$307
This Booking.com deal was found by Cheapflights users on 3/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:23 pm
SAT
- LHR
2 stops55h 07m
Air Canada
Deal found 3/23![Air Canada logo]()
$322
This Travelocity deal was found by Cheapflights users on 3/25. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/71:35 pm
SAT
- LHR
2 stops49h 25m
Air Canada
Deal found 3/25![Air Canada logo]()
$343
This FlightHub deal was found by Cheapflights users on 3/25. 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.
Sat 8/81:39 pm
SAT
- LHR
2 stops34h 51m
Air Canada
Deal found 3/25![Air Canada logo]()
$347
This Delta deal was found by Cheapflights users on 3/23. 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.
Fri 7/1712:37 pm
SAT
- LHR
1 stop19h 58m
Delta
Deal found 3/23![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:35 am
SAT
- LHR
1 stop17h 50m
United Airlines
Deal found 3/25![United Airlines logo]()
$382
This KAYAK deal was found by Cheapflights users on 3/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:26 am
SAT
- LHR
2 stops19h 39m
Aer Lingus
Deal found 3/23![Aer Lingus logo]()
$404
This Ovago deal was found by Cheapflights users on 3/24. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:26 am
SAT
- LHR
2 stops19h 39m
Aer Lingus
Deal found 3/24![Aer Lingus logo]()
$405
This Trip.com deal was found by Cheapflights users on 3/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:26 am
SAT
- LHR
2 stops19h 39m
Aer Lingus
Deal found 3/24![Aer Lingus logo]()
$429
This Ovago deal was found by Cheapflights users on 3/25. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:26 am
SAT
- LHR
2 stops20h 39m
Aer Lingus
Deal found 3/25![Aer Lingus logo]()
$455
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 March 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $753 (KAYAK) |
One-way from | $307 (United Airlines) |
Popular in | June |
Cheapest in | October |
Average price | $946 |
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 March 27, 2026.
Use the filters below to find and compare flights from San Antonio to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 8/26
8:53 am-6:55 am
2 stops16h 02m
London Heathrow
Tue 9/15
2:05 pm-11:40 am
2 stops27h 35m
$830
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 5/4
2:31 pm-1:15 pm
2 stops16h 44m
London Heathrow
Wed 5/20
6:30 am-6:23 pm
2 stops17h 53m
$885
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sat 5/2
7:10 pm-11:35 am
1 stop34h 25m
London Heathrow
Mon 5/11
4:25 pm-8:35 pm
2 stops34h 10m
$897
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sun 9/13
4:13 pm-11:35 am
1 stop13h 22m
London Heathrow
Tue 9/22
5:40 pm-9:13 pm
1 stop33h 33m
$899
Quickest round-trip
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 5/1
1:55 pm-7:15 am
1 stop11h 20m
London Heathrow
Tue 5/5
9:55 am-9:30 pm
2 stops17h 35m
$931
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sat 9/12
12:50 pm-11:20 am
2 stops16h 30m
London Heathrow
Sun 9/20
8:40 am-8:10 pm
2 stops17h 30m
$976
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 8/26
12:10 pm-6:50 pm
3 stops24h 40m
London Heathrow
Tue 9/15
7:05 am-11:18 pm
3 stops22h 13m
$1,035
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sun 4/19
4:17 pm-7:45 am
1 stop33h 28m
London Heathrow
Thu 4/30
5:40 pm-9:18 pm
1 stop33h 38m
$1,041
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sat 4/11
4:45 pm-9:40 am
1 stop34h 55m
London Heathrow
Sun 4/19
1:40 pm-9:03 pm
1 stop13h 23m
$1,060
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 4/21
1:15 pm-10:20 am
1 stop15h 05m
London Heathrow
Sat 5/16
6:30 am-6:23 pm
2 stops17h 53m
$1,076
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 March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 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 March 13, 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, September is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of $526). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $826). 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 March 27, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican 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
Entertainment
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Entertainment
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Entertainment
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Entertainment
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Entertainment
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Entertainment
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Comfort
7.9
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
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton
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 March 27, 2026.
San Antonio and Heathrow flights
Browse other San Antonio and Heathrow flight options. Last updated on March 27, 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 March 27, 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 March 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$530 | Average$674 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$531 | Average$907 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$556 | Average$839 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$571 | Average$932 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$600 | Average$780 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$672 | Average$999 | FlexibilityNo cancel fee | On-time77% |