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$264+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap 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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$574
(oojo)

One-way from

$366
(Expedia)

Popular in

June

Cheapest in

October

Average price

$777
Provider with most accurate pricing for San Antonio-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-London Heathrow flights.
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From San Antonio to London Heathrow
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One-way flight from San Antonio to London Heathrow
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($236 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from San Antonio to Heathrow

Cheapest flights from San Antonio to Heathrow
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 January 15, 2026.

This oojo deal was found by Cheapflights users on 1/13. 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 1/206:06 am
SAT
-
LHR
1 stop18h 49m
British Airways
Wed 2/47:40 pm
LHR
-
SAT
2 stops20h 12m
British Airways
Deal found 1/13$571
This oojo deal was found by Cheapflights users on 1/13. 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 2/183:08 pm
SAT
-
LHR
1 stop14h 32m
British Airways
Thu 2/264:35 pm
LHR
-
SAT
2 stops31h 49m
British Airways
Deal found 1/13$574
This Iberia deal was found by Cheapflights users on 1/13. 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 2/113:07 pm
SAT
-
LHR
1 stop14h 33m
Iberia
Wed 2/187:05 pm
LHR
-
SAT
2 stops19h 18m
Iberia
Deal found 1/13$580
This Expedia deal was found by Cheapflights users on 1/14. 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 1/211:08 pm
SAT
-
LHR
1 stop16h 32m
Iberia
Wed 1/287:05 pm
LHR
-
SAT
2 stops19h 15m
Iberia
Deal found 1/14$581
This oojo deal was found by Cheapflights users on 1/14. 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 1/273:07 pm
SAT
-
LHR
1 stop14h 33m
British Airways
Thu 2/510:45 am
LHR
-
SAT
2 stops40h 05m
British Airways
Deal found 1/14$582
This Netflights deal was found by Cheapflights users on 1/14. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/291:00 pm
SAT
-
LHR
1 stop15h 15m
Virgin Atlantic
Thu 4/912:25 pm
LHR
-
SAT
1 stop15h 22m
Virgin Atlantic
Deal found 1/14$587
This United Airlines deal was found by Cheapflights users on 1/13. 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 2/152:10 pm
SAT
-
LHR
1 stop11h 20m
United Airlines
Fri 3/61:25 pm
LHR
-
SAT
3 stops37h 29m
United Airlines
Deal found 1/13$588
This British Airways deal was found by Cheapflights users on 1/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/41:36 pm
SAT
-
LHR
1 stop15h 59m
British Airways
Wed 3/117:35 am
LHR
-
SAT
2 stops21h 21m
British Airways
Deal found 1/14$589
This lastminute.com deal was found by Cheapflights users on 1/13. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/2512:55 pm
SAT
-
LHR
1 stop12h 00m
Virgin Atlantic
Tue 2/106:30 am
LHR
-
SAT
2 stops16h 52m
Virgin Atlantic
Deal found 1/13$590
This Mytrip deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/209:00 am
SAT
-
LHR
2 stops16h 10m
Air Canada
Wed 2/41:25 pm
LHR
-
SAT
2 stops39h 48m
Air Canada
Deal found 1/13$591
This oojo deal was found by Cheapflights users on 1/13. 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.
Sun 2/1510:23 am
SAT
-
LHR
1 stop14h 27m
British Airways
Tue 2/242:45 pm
LHR
-
SAT
1 stop15h 10m
British Airways
Deal found 1/13$593

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 January 15, 2026.
Use the filters below to find and compare flights from San Antonio to London Heathrow Airport that are best for you.

Fly from

San Antonio

Fly to

Heathrow

Route

Depart

Return

Price

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 2/15

2:10 pm-7:30 am

1 stop11h 20m

London Heathrow

Fri 3/6

1:25 pm-8:54 pm

3 stops37h 29m

$588

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 3/8

8:08 pm-8:15 am

1 stop31h 07m

London Heathrow

Tue 3/17

7:30 am-11:56 pm

2 stops21h 26m

$589

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 2/15

6:40 am-7:05 am

1 stop18h 25m

London Heathrow

Fri 3/6

11:30 am-10:55 pm

2 stops17h 25m

$601

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 4/19

2:14 pm-11:35 am

1 stop15h 21m

London Heathrow

Thu 4/30

2:05 pm-4:18 pm

2 stops32h 13m

$605

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 4/1

4:17 pm-11:35 am

1 stop13h 18m

London Heathrow

Wed 4/8

2:05 pm-3:11 pm

2 stops31h 06m

$605

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 3/1

8:00 am-6:25 am

1 stop16h 25m

London Heathrow

Sun 3/8

6:30 am-7:33 pm

2 stops19h 03m

$606

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/18

3:08 pm-8:15 am

1 stop12h 07m

London Heathrow

Wed 3/25

11:45 am-8:50 pm

1 stop14h 05m

$609

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 3/9

5:50 pm-10:15 am

1 stop11h 25m

London Heathrow

Tue 3/17

12:05 pm-9:25 pm

1 stop14h 20m

$609

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 3/29

5:30 am-7:40 am

1 stop20h 10m

London Heathrow

Thu 4/9

7:25 am-8:42 pm

2 stops19h 17m

$612

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 3/1

5:41 pm-12:15 pm

1 stop12h 34m

London Heathrow

Sun 3/8

8:20 am-7:10 pm

1 stop15h 50m

$625

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 21 results
1
2
3

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Antonio-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Antonio-London Heathrow Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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 January 9, 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 $527). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $834). 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.

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 January 15, 2026.
Peruse reviews from past customers who have flown with Delta, Virgin Atlantic, and United 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.
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,051 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Virgin Atlantic
7.5
Good
678 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,164 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,136 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,680 reviews
Delta
7.9
Good
8,051 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • What airport do you fly from for flights from San Antonio to London Heathrow?

    Located just 7.6 mi from the city center, San Antonio is the airport most travelers will use when flying to London Heathrow from San Antonio. Booking flights from San Antonio (SAT) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 6 different airlines.

  • How long is the flight from San Antonio to London Heathrow Airport?

    For as low as $588, United Airlines can have you in London Heathrow Airport from San Antonio in 11h 20m. There are 4967 mi between San Antonio and London Heathrow Airport. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Antonio to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from San Antonio to London Heathrow Airport round-trip from $530. Other airlines that can offer you cheap pricing are American Airlines, from $530, and United Airlines, from $531. Delta is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from San Antonio to Heathrow that include hotel bookings?

    Yes. In addition to deals on San Antonio to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Heathrow.

  • Can I find deals for business class flights from San Antonio to Heathrow?

    Yes. Cheapflights offers flight deals from San Antonio to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $527). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $834). 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.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Antonio to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$530Average$703FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$530Average$848FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$531Average$931FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$566Average$853FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$600Average$780FlexibilityNo cancel feeOn-time72%
IberiaCheapest$668Average$956FlexibilityNo cancel feeOn-time77%

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