$331+ Cheap flights from San Antonio (SAT) to Heathrow (LHR)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
Oct 30 — Nov 61
Round-trip
1 adult, Economy
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Find cheap flights from San Antonio to Heathrow with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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
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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 September 30, 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 September 30, 2026.
This Expedia deal was found by Cheapflights users on 9/28. 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.
Tue 12/12:03 pm -
1 stop14h 22m
Mon 12/74:30 pm -
2 stops21h 59m
Deal found 9/28![Iberia logo]()
$853
This Expedia deal was found by Cheapflights users on 9/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/104:32 pm -
1 stop13h 08m
Tue 11/178:55 am -
1 stop14h 30m
Deal found 9/26![KLM logo]()
$868
This Expedia deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:32 pm -
1 stop13h 08m
Wed 11/1811:20 am -
1 stop17h 34m
Deal found 9/27![KLM logo]()
$869
This SmartFares deal was found by Cheapflights users on 9/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/301:44 pm -
1 stop12h 06m
Wed 12/99:50 am -
1 stop13h 48m
Deal found 9/27![Virgin Atlantic logo]()
$870
This Delta deal was found by Cheapflights users on 9/28. 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 12/307:00 am -
1 stop17h 25m
Thu 1/1411:45 am -
2 stops17h 35m
Deal found 9/28![Delta logo]()
$872
This Orbitz deal was found by Cheapflights users on 9/29. 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.
Wed 11/1112:45 pm -
1 stop15h 15m
Wed 11/187:05 pm -
2 stops19h 26m
Deal found 9/29![Iberia logo]()
$879
This Iberia deal was found by Cheapflights users on 9/25. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:05 pm -
1 stop14h 55m
Wed 11/47:40 pm -
2 stops18h 49m
Deal found 9/25![Iberia logo]()
$880
This United Airlines deal was found by Cheapflights users on 9/26. 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.
Mon 11/97:20 am -
2 stops22h 30m
Mon 11/161:45 pm -
2 stops52h 23m
Deal found 9/26![United Airlines logo]()
$881
This Delta deal was found by Cheapflights users on 9/29. 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 10/261:41 pm -
1 stop16h 59m
Tue 11/1010:00 am -
2 stops18h 06m
Deal found 9/29![Delta logo]()
$882
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 September 30, 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 September 30, 2026.
This United Airlines deal was found by Cheapflights users on 9/29. 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 2/216:43 am -
2 stops18h 27m
Mon 2/229:30 am -
2 stops19h 18m
Deal found 9/29![United Airlines logo]()
$825
This KLM deal was found by Cheapflights users on 9/28. 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.
Tue 10/274:29 pm -
1 stop14h 11m
Wed 11/411:45 am -
2 stops16h 35m
Deal found 9/28![KLM logo]()
$882
This Delta deal was found by Cheapflights users on 9/28. 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 10/2611:36 am -
2 stops14h 29m
Tue 11/1010:00 am -
2 stops18h 06m
Deal found 9/28![Delta logo]()
$887
This Delta deal was found by Cheapflights users on 9/28. 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 11/1111:45 am -
2 stops15h 15m
Wed 11/1811:45 am -
2 stops17h 09m
Deal found 9/28![Delta logo]()
$887
This United Airlines deal was found by Cheapflights users on 9/27. 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 10/2811:45 am -
1 stop14h 55m
Thu 11/510:00 am -
1 stop15h 10m
Deal found 9/27![United Airlines logo]()
$911
This Delta deal was found by Cheapflights users on 9/29. 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 10/2711:36 am -
2 stops16h 24m
Wed 11/411:45 am -
2 stops16h 35m
Deal found 9/29![Delta logo]()
$887
This Delta deal was found by Cheapflights users on 9/25. 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 12/307:00 am -
1 stop17h 25m
Wed 1/1312:40 pm -
1 stop17h 48m
Deal found 9/25![Delta logo]()
$904
This Delta deal was found by Cheapflights users on 9/27. 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 10/274:29 pm -
1 stop11h 31m
Fri 11/612:40 pm -
1 stop16h 46m
Deal found 9/27![Delta logo]()
$911
This Delta deal was found by Cheapflights users on 9/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:16 am -
1 stop18h 09m
Sun 12/66:30 am -
2 stops21h 01m
Deal found 9/26![Delta logo]()
$932
This Delta deal was found by Cheapflights users on 9/27. 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 10/306:00 am -
1 stop20h 05m
Wed 11/49:50 am -
1 stop17h 20m
Deal found 9/27![Delta logo]()
$961
This Delta deal was found by Cheapflights users on 9/27. 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 10/281:41 pm -
1 stop11h 44m
Mon 11/210:50 am -
1 stop14h 58m
Deal found 9/27![Delta logo]()
$961
Last-minute flights from San Antonio to HeathrowDiscover last-minute flight deals from San Antonio to Heathrow. Data last updated September 30, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated September 30, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 9/27. 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 10/255:30 am -
2 stops20h 40m
Fri 11/61:00 pm -
2 stops32h 13m
Deal found 9/27![Air Canada logo]()
$895
This Air Canada deal was found by Cheapflights users on 9/27. 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 10/255:30 am -
2 stops20h 40m
Thu 11/53:00 pm -
2 stops30h 38m
Deal found 9/27![Air Canada logo]()
$899
This Delta deal was found by Cheapflights users on 9/29. 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 10/261:41 pm -
1 stop16h 59m
Tue 11/1010:00 am -
2 stops18h 06m
Deal found 9/29![Delta logo]()
$882
This Air Canada deal was found by Cheapflights users on 9/27. 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 10/269:35 am -
2 stops20h 45m
Thu 11/53:00 pm -
2 stops30h 38m
Deal found 9/27![Air Canada logo]()
$904
This Iberia deal was found by Cheapflights users on 9/29. 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 10/272:05 pm -
1 stop14h 55m
Tue 11/38:25 am -
2 stops18h 43m
Deal found 9/29![Iberia logo]()
$879
This Iberia deal was found by Cheapflights users on 9/25. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:05 pm -
1 stop14h 55m
Wed 11/47:40 pm -
2 stops18h 49m
Deal found 9/25![Iberia logo]()
$880
This Delta deal was found by Cheapflights users on 9/29. 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 10/2711:36 am -
2 stops16h 24m
Wed 11/411:45 am -
2 stops16h 35m
Deal found 9/29![Delta logo]()
$887
This Virgin Atlantic deal was found by Cheapflights users on 9/27. 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.
Tue 10/2710:48 am -
2 stops15h 57m
Tue 11/36:30 am -
2 stops16h 44m
Deal found 9/27![Virgin Atlantic logo]()
$889
This United Airlines deal was found by Cheapflights users on 9/27. 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 10/287:20 am -
2 stops23h 30m
Fri 11/611:35 am -
1 stop15h 18m
Deal found 9/27![United Airlines logo]()
$907
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 September 30, 2026.
Search for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 9/25. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/812:10 pm -
1 stop16h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Virgin Atlantic logo]()
$331
This Air Canada deal was found by Cheapflights users on 9/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/85:30 am -
3 stops19h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Air Canada logo]()
$344
This United Airlines deal was found by Cheapflights users on 9/27. 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 12/274:13 pm -
1 stop12h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![United Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Wed 11/118:20 pm -
2 stops32h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$424
This Cheapflightsfares deal was found by Cheapflights users on 9/29. 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.
Mon 11/27:15 am -
2 stops22h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Aer Lingus logo]()
$428
This Cheapflightsfares deal was found by Cheapflights users on 9/28. 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 10/67:10 am -
2 stops22h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Aer Lingus logo]()
$429
This Mytrip deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:50 am -
2 stops25h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$440
This Kiwi.com deal was found by Cheapflights users on 9/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/19:25 am -
3 stops27h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Multiple Airlines logo]()
$450
This United Airlines deal was found by Cheapflights users on 9/26. 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 11/17:20 am -
2 stops22h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 9/29. 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 11/211:45 am -
1 stop13h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![United Airlines logo]()
$463
This Kiwi.com deal was found by Cheapflights users on 9/28. 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.
Wed 12/211:00 am -
3 stops43h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$473
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 September 30, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $850 (Expedia) |
One-way from | $331 (Virgin Atlantic) |
Popular in | June |
Cheapest in | March |
Average price | $1,105 |
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 7,457,451 searches. Data last updated September 30, 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 San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sun 12/27
4:13 pm-10:15 am
1 stop12h 02m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$374
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Mon 11/2
7:15 am-8:05 am
2 stops18h 50m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$428
Quickest round-trip
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Mon 11/2
2:20 pm-7:40 am
1 stop11h 20m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$463
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sun 11/1
11:45 am-10:15 am
1 stop16h 30m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$463
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Tue 10/6
8:50 am-9:35 am
1 stop18h 45m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$485
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Thu 10/8
5:30 am-11:10 am
3 stops23h 40m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$539
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Thu 10/15
5:30 am-2:10 pm
3 stops26h 40m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$539
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Wed 11/11
5:30 am-11:15 am
3 stops23h 45m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$583
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sun 2/21
6:43 am-7:10 am
2 stops18h 27m
London Heathrow
Mon 2/22
9:30 am-10:48 pm
2 stops19h 18m
$825
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Tue 10/27
4:29 pm-11:40 am
1 stop14h 11m
London Heathrow
Wed 11/4
11:45 am-10:20 pm
2 stops16h 35m
$882
Showing 1-10 of 19 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 September.
| 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on San Antonio-London Heathrow Airport flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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 32 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, March is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of $874). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $1,282). 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?
Airfare is below average for this route at the moment.
San Antonio to London Heathrow Airport flights typically cost between $886 and $1,153 in February.The cheapest round-trip price found within the last 5 days was $821 on United Airlines (Feb 21-Feb 22).
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 September 30, 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
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
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Top 5 airlines flying from San Antonio to Heathrow
Discover the top 5 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 7,457,451 searches. Data last updated September 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$597 | Average$801 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$646 | Average$810 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$658 | Average$1,113 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$723 | Average$972 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$892 | Average$1,205 | FlexibilityNo cancel fee | On-time71% |