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Heathrow

$332+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap 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 July 23, 2026.

This Iberia deal was found by Cheapflights users on 7/21. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:22 am
SAT
-
LHR
1 stop16h 38m
Iberia
Mon 11/237:40 pm
LHR
-
SAT
2 stops18h 54m
Iberia
Deal found 7/21$870
This Iberia deal was found by Cheapflights users on 7/19. 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 7/19$871
This Delta deal was found by Cheapflights users on 7/22. 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.
Wed 12/302:10 pm
SAT
-
LHR
1 stop15h 30m
Delta
Thu 1/148:40 am
LHR
-
SAT
2 stops17h 42m
Delta
Deal found 7/22$872
This Delta deal was found by Cheapflights users on 7/21. 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.
Mon 10/266:22 pm
SAT
-
LHR
1 stop12h 18m
Delta
Tue 11/108:40 am
LHR
-
SAT
2 stops18h 52m
Delta
Deal found 7/21$873
This Delta deal was found by Cheapflights users on 7/23. 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.
Tue 10/2711:35 am
SAT
-
LHR
2 stops13h 45m
Delta
Wed 11/411:45 am
LHR
-
SAT
2 stops16h 42m
Delta
Deal found 7/23$876
This Delta deal was found by Cheapflights users on 7/22. 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.
Wed 12/3010:45 am
SAT
-
LHR
2 stops16h 00m
Delta
Wed 1/136:30 am
LHR
-
SAT
2 stops16h 48m
Delta
Deal found 7/22$877
This Delta deal was found by Cheapflights users on 7/22. 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 9/225:30 am
SAT
-
LHR
1 stop18h 55m
Delta
Fri 10/29:55 am
LHR
-
SAT
2 stops18h 49m
Delta
Deal found 7/22$885
This United Airlines deal was found by Cheapflights users on 7/19. 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 10/79:00 am
SAT
-
LHR
2 stops15h 55m
United Airlines
Wed 10/2110:50 am
LHR
-
SAT
2 stops19h 08m
United Airlines
Deal found 7/19$887

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 July 23, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$870
(Iberia)

One-way from

$403
(eDestinos)

Popular in

June

Cheapest in

October

Average price

$1,167
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.
Search Deals
From San Antonio to London Heathrow
Search Deals
One-way flight from San Antonio to London Heathrow
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($240 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 23, 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

Price

Cheapest round-trip

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 10/26

6:22 pm-11:40 am

1 stop12h 18m

London Heathrow

Tue 11/10

8:40 am-9:32 pm

2 stops18h 52m

$872

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 12/30

10:45 am-8:45 am

2 stops16h 00m

London Heathrow

Wed 1/13

6:30 am-5:18 pm

2 stops16h 48m

$878

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 9/22

5:30 am-6:25 am

1 stop18h 55m

London Heathrow

Fri 10/2

9:55 am-10:44 pm

2 stops18h 49m

$885

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 10/5

12:50 pm-9:25 pm

1 stop26h 35m

London Heathrow

Tue 10/13

5:40 pm-9:13 pm

1 stop33h 33m

$900

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 10/26

4:29 pm-9:00 am

1 stop11h 31m

London Heathrow

Tue 11/10

8:55 am-8:22 pm

1 stop17h 27m

$901
Quickest round-trip

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 11/3

2:22 pm-7:40 am

1 stop11h 18m

London Heathrow

Thu 11/5

12:05 pm-7:22 pm

1 stop13h 17m

$902

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 10/27

1:41 pm-7:50 am

1 stop13h 09m

London Heathrow

Wed 11/4

12:30 pm-11:28 pm

1 stop16h 58m

$902
Cheapest one-way

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 11/2

5:30 am-11:15 am

3 stops23h 45m

$332
Quickest one-way

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 12/11

5:52 pm-12:15 pm

1 stop12h 23m

$375

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 12/11

8:00 am-8:45 am

2 stops18h 45m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 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 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.
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 75 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 $580). 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 typical for this route at the moment.

San Antonio to London Heathrow Airport flights typically cost between $817 and $1,086 in November.
The cheapest round-trip price found within the last 5 days was $870 on Iberia (Nov 17-Nov 23).

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 July 23, 2026.
Peruse reviews from past customers who have flown with Delta,Virgin Atlantic, andUnited 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
7.8
Good
8,479 reviews

Boarding

8.1

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
7.8
Good
8,479 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.5
Good
693 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
10,024 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.1
Good
11,832 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.7
Okay
8,127 reviews
Delta
7.8
Good
8,479 reviews

Boarding

8.1

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 5 different airlines.

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

    For as low as $872, Delta can have you in London Heathrow Airport from San Antonio in 12h 18m. 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 $529. Other airlines that can offer you cheap pricing are Delta, from $530, and American Airlines, from $530. United Airlines is 41% 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, October is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of $580). 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.

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
Dorking
Hounslow
Winchester
Croydon
Gatwick
Wembley
Harrow
Eastleigh
Southend-on-Sea
Watford
Northampton
Dartford
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton

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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 2,558,603 searches. Data last updated July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$529Average$931FlexibilityNo cancel feeOn-time69%
DeltaCheapest$530Average$656FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$530Average$986FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$555Average$922FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$600Average$780FlexibilityNo cancel feeOn-time72%

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