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Cheap flights from London Heathrow Airport to San Antonio from £415

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAT
12 Sep — 19 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to San Antonio

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to San Antonio
Explore the most affordable flight options available from Heathrow to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 August 2026.

Mon 14/906:40 -
2 stops23h 28m
Mon 21/913:55 -
2 stops20h 05m
Deal found 12/8£578
Mon 16/1110:20 -
2 stops19h 47m
Mon 7/1213:46 -
2 stops20h 14m
Deal found 8/8£589
Mon 7/906:40 -
2 stops23h 48m
Mon 14/913:55 -
2 stops22h 35m
Deal found 8/8£590
Mon 21/906:40 -
2 stops23h 28m
Fri 2/1010:59 -
2 stops23h 01m
Deal found 10/8£591
Wed 2/918:40 -
2 stops32h 24m
Sun 6/910:53 -
2 stops24h 47m
Deal found 7/8£600
Sat 14/1117:00 -
2 stops34h 58m
Wed 25/1113:46 -
2 stops20h 14m
Deal found 11/8£601
Fri 16/1006:40 -
2 stops21h 13m
Fri 30/1016:29 -
2 stops18h 31m
Deal found 9/8£619
Thu 3/906:40 -
2 stops20h 24m
Mon 14/913:55 -
3 stops22h 55m
Deal found 8/8£623
Mon 9/1106:40 -
2 stops23h 51m
Fri 13/1113:46 -
2 stops20h 14m
Deal found 9/8£636

Find flight deals from Heathrow to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to San Antonio (SAT). 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 13 August 2026.

Round-trip from

£578

One-way from

£415

Popular in

December

Cheapest in

September

Average price

£1,177
Scandinavian Airlines
  • Scandinavian Airlines
  • 14/9-21/9
  • 4 total stops
  • 43h 33m total
  • London to San Antonio
Search Deals
29/9
  • 29/9
  • 3 total stops
  • 48h 47m total
  • London to San Antonio
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to San Antonio 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 858,174 searches. Data last updated 13 August 2026.
Use the filters below to find and compare flights from London Heathrow Airport to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Mon 14/9

06:40-00:08

2 stops23h 28m

San Antonio

Mon 21/9

13:55-19:55

3 stops24h 00m

£596

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Wed 2/9

18:40-21:04

2 stops32h 24m

San Antonio

Sun 6/9

10:53-17:40

2 stops24h 47m

£600

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Wed 21/10

10:20-00:13

2 stops19h 53m

San Antonio

Wed 28/10

16:29-18:30

2 stops21h 01m

£693

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Sat 3/10

06:40-23:18

2 stops22h 38m

San Antonio

Sat 10/10

14:00-21:40

2 stops25h 40m

£698

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Thu 17/9

06:40-21:14

2 stops20h 34m

San Antonio

Sun 20/9

10:59-16:00

2 stops23h 01m

£885

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Sat 24/10

06:40-23:26

2 stops22h 46m

San Antonio

Sun 1/11

14:00-16:25

3 stops20h 25m

£888

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Fri 4/9

06:40-21:04

3 stops20h 24m

San Antonio

Fri 25/9

13:55-13:35

2 stops17h 40m

£889

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Mon 14/9

06:40-00:08

2 stops23h 28m

San Antonio

Mon 28/9

13:55-18:50

3 stops22h 55m

£895

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Wed 16/9

08:55-15:37

1 stop12h 42m

San Antonio

Mon 28/9

14:35-09:05

1 stop12h 30m

£933

LondonSan Antonio

LHR London Heathrow - SAT San Antonio

LHRSAT

London Heathrow

Thu 10/9

07:45-17:44

2 stops15h 59m

San Antonio

Sat 10/10

13:12-09:40

1 stop14h 28m

£934

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Heathrow to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Heathrow with our price prediction graph.
Estimated return 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 London Heathrow Airport to San Antonio

How far ahead should I book a flight from London Heathrow Airport to San Antonio?

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to San Antonio, you should look to book at least 79 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 London Heathrow Airport to San Antonio?

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to San Antonio (average of £731). Flying from London Heathrow Airport to San Antonio in December is currently the most expensive (average of £1,186). 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 for a return flight from London Heathrow Airport to San Antonio?

Airfare is below average for this route at the moment.

London Heathrow Airport to San Antonio flights typically cost between £1,053 and £1,301 in September.
The cheapest return price found within the last 5 days was £578 on Scandinavian Airlines (14 Sept–21 Sept).

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. 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 San Antonio. Reviews last updated 13 August 2026.
See what other customers who have flown with Virgin Atlantic,Scandinavian Airlines, andUnited Airlines from London Heathrow Airport to San Antonio have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
694 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Scandinavian Airlines
7.4
Good
1,947 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
United Airlines
7.4
Good
10,111 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Lufthansa
6.8
Okay
8,180 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,160 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Entertainment

7.5

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to San Antonio. 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 into for flights to San Antonio from London Heathrow?

    If you book a flight to San Antonio from London Heathrow, you will be flying to San Antonio, which is the city’s only airport. San Antonio (SAT) is located 7.6 mi from the center of San Antonio. There are 0 flights from London Heathrow to San Antonio per day from 5 different airlines.

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

    For as low as £596, Scandinavian Airlines can have you in San Antonio from London Heathrow Airport in 23h 28m. The distance from London Heathrow Airport to San Antonio is about 4967 mi.

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

    According to our current data, United Airlines (£242), Scandinavian Airlines (£555), and Virgin Atlantic (£688) offers the cheapest pricing from London Heathrow Airport to San Antonio. These flights start at 74% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to San Antonio 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 London Heathrow Airport to San Antonio?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to San Antonio (average of £731). Flying from London Heathrow Airport to San Antonio in December is currently the most expensive (average of £1,186). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Heathrow to San Antonio

Discover the top 5 airlines that operate flights from Heathrow to San Antonio. 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 858,174 searches. Data last updated 13 August 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£242Average£727FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Scandinavian AirlinesCheapest£555Average£651FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Virgin AtlanticCheapest£688Average£1,026FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£703Average£1,039FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£709Average£951FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to San Antonio?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Antonio from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Antonio?

Cheapflights helps you find that perfect flight to San Antonio from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Heathrow to San Antonio with no change fees?

Certainly. Search results for flights to San Antonio from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to San Antonio become cheaper?

Of course! You can now track prices for flights from Heathrow to San Antonio and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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