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Cheap flights from London Heathrow Airport to San Antonio from £425

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 28/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAT
29 Apr — 6 May1
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 30 March 2026.

Mon 13/417:00
LHR
-
SAT
2 stops37h 46m
Scandinavian Airlines
Mon 4/515:33
SAT
-
LHR
2 stops42h 27m
Scandinavian Airlines
Deal found 26/3£665
Wed 1/706:00
LHR
-
SAT
2 stops21h 13m
Multiple Airlines
Wed 22/712:04
SAT
-
LHR
1 stop12h 21m
Multiple Airlines
Deal found 29/3£680
Sat 3/1006:40
LHR
-
SAT
2 stops23h 35m
Scandinavian Airlines
Wed 21/1012:10
SAT
-
LHR
2 stops21h 50m
Scandinavian Airlines
Deal found 25/3£694
Tue 28/406:40
LHR
-
SAT
2 stops24h 06m
Scandinavian Airlines
Tue 5/515:33
SAT
-
LHR
2 stops42h 27m
Scandinavian Airlines
Deal found 29/3£697
Fri 25/906:40
LHR
-
SAT
2 stops21h 35m
Scandinavian Airlines
Sat 3/1012:10
SAT
-
LHR
2 stops23h 30m
Scandinavian Airlines
Deal found 27/3£701

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 30 March 2026.

Round-trip from

£664

One-way from

£425

Popular in

December

Cheapest in

January

Average price

£837
Scandinavian Airlines
  • Scandinavian Airlines
  • 13/4-4/5
  • 4 total stops
  • 77h 43m total
  • London to San Antonio
Search Deals
28/6
  • 28/6
  • 2 total stops
  • 45h 13m total
  • London to San Antonio
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£12 potential increase over avg. return price).
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 March 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 30 March 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 - SAT

LHRSAT

London Heathrow

Fri 25/9

06:40-22:15

2 stops21h 35m

San Antonio

Sat 3/10

12:10-17:40

2 stops23h 30m

£701

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 2/9

17:00-22:15

2 stops35h 15m

San Antonio

Sun 6/9

12:10-21:40

2 stops27h 30m

£711

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 3/6

06:40-23:48

2 stops23h 08m

San Antonio

Fri 19/6

12:05-16:00

2 stops21h 55m

£823

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Tue 28/4

07:05-00:46

3 stops23h 41m

San Antonio

Tue 5/5

15:33-18:30

2 stops20h 57m

£849
Fastest return journey

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 22/4

09:00-22:58

2 stops19h 58m

San Antonio

Wed 29/4

11:46-07:45

1 stop13h 59m

£890

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sun 10/5

15:30-20:49

2 stops35h 19m

San Antonio

Sun 17/5

19:10-07:45

1 stop30h 35m

£906
Cheapest one-way

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sun 28/6

06:00-21:13

2 stops45h 13m

£425

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sat 18/4

14:10-11:40

2 stops27h 30m

£470

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Mon 8/6

21:25-18:56

2 stops27h 31m

£513

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Tue 16/6

08:00-23:59

3 stops45h 59m

£525

Flights are sorted by cheapest return flights first.

Deals found on 26/3

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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?

Use this chart to determine the optimal time to book a return flight from Heathrow to San Antonio. Price data was last updated on 13 March 2026.

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 48 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, December is the cheapest month in which you can book a flight from London Heathrow Airport to San Antonio (average of £331). Flying from London Heathrow Airport to San Antonio in July is currently the most expensive (average of £556). 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?

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 30 March 2026.
See what other customers who have flown with Virgin Atlantic,United Airlines, andScandinavian 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
685 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
685 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
United Airlines
7.4
Good
9,514 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Scandinavian Airlines
7.3
Good
1,731 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Lufthansa
6.8
Okay
7,877 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,834 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Crew

8.1

Food

6.9

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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 6 different airlines.

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

    For as low as £701, Scandinavian Airlines can have you in San Antonio from London Heathrow Airport in 21h 35m. 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, Scandinavian Airlines (£587), Finnair (£592), and United Airlines (£675) offers the cheapest pricing from London Heathrow Airport to San Antonio. These flights start at 32% 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, December is the cheapest month in which you can book a flight from London Heathrow Airport to San Antonio (average of £331). Flying from London Heathrow Airport to San Antonio in July is currently the most expensive (average of £556). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 6 airlines flying from Heathrow to San Antonio

Discover the top 6 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 30 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£587Average£719FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
FinnairCheapest£592Average£966FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£675Average£796FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£697Average£876FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£715Average£857FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£716Average£840FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

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

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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.

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