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Cheap flights from London Heathrow Airport to San Antonio from £430

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAT
12 Jun — 19 Jun1
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 May 2026.

Fri 11/906:40
LHR
-
SAT
2 stops23h 35m
Scandinavian Airlines
Mon 14/912:15
SAT
-
LHR
2 stops24h 15m
Scandinavian Airlines
Deal found 12/5£698
Tue 8/919:50
LHR
-
SAT
2 stops31h 23m
Multiple Airlines
Tue 29/912:50
SAT
-
LHR
1 stop12h 20m
Multiple Airlines
Deal found 11/5£699
Thu 10/906:40
LHR
-
SAT
2 stops23h 35m
Scandinavian Airlines
Sun 20/912:15
SAT
-
LHR
2 stops24h 15m
Scandinavian Airlines
Deal found 11/5£715
Sun 30/810:20
LHR
-
SAT
2 stops19h 34m
Scandinavian Airlines
Sun 6/912:10
SAT
-
LHR
2 stops23h 30m
Scandinavian Airlines
Deal found 11/5£720
Thu 3/906:40
LHR
-
SAT
2 stops23h 35m
Scandinavian Airlines
Sun 6/912:10
SAT
-
LHR
2 stops24h 20m
Scandinavian Airlines
Deal found 12/5£731
Wed 2/1210:20
LHR
-
SAT
2 stops18h 58m
Scandinavian Airlines
Sun 6/1216:10
SAT
-
LHR
2 stops19h 30m
Scandinavian Airlines
Deal found 12/5£736
Wed 4/1106:40
LHR
-
SAT
2 stops21h 47m
Scandinavian Airlines
Sun 8/1116:10
SAT
-
LHR
2 stops23h 30m
Scandinavian Airlines
Deal found 9/5£740

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 May 2026.

Round-trip from

£698

One-way from

£430

Popular in

December

Cheapest in

February

Average price

£1,011
Scandinavian Airlines
  • Scandinavian Airlines
  • 11/9-14/9
  • 4 total stops
  • 47h 50m total
  • London to San Antonio
Search Deals
8/6
  • 8/6
  • 3 total stops
  • 32h 31m total
  • London to San Antonio
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 May 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

Wed 4/11

06:40-22:27

2 stops21h 47m

San Antonio

Sun 8/11

16:10-21:40

2 stops23h 30m

£740

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sun 30/8

06:40-00:28

3 stops23h 48m

San Antonio

Sun 6/9

12:10-18:30

2 stops24h 20m

£740

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sat 26/9

06:40-23:18

2 stops22h 38m

San Antonio

Sat 3/10

12:10-18:30

2 stops24h 20m

£826

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Tue 15/9

10:20-23:18

2 stops18h 58m

San Antonio

Sun 20/9

12:15-21:40

2 stops27h 25m

£865

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Mon 7/9

08:00-16:31

1 stop14h 31m

San Antonio

Mon 28/9

12:50-07:15

1 stop12h 25m

£930

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Tue 8/9

09:20-17:09

1 stop13h 49m

San Antonio

Sun 27/9

12:10-20:10

1 stop26h 00m

£948
Fastest return journey

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 4/11

10:00-17:33

1 stop13h 33m

San Antonio

Sun 8/11

14:01-07:55

1 stop11h 54m

£958
Cheapest one-way

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 28/10

20:50-09:02

3 stops41h 12m

£537

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sun 19/7

14:10-05:00

3 stops44h 50m

£622

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Tue 2/6

17:00-05:40

1 stop18h 40m

£681

Flights are sorted by cheapest return flights first.

Deals found on 8/5

Showing 1-10 of 19 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?

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 47 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Antonio (average of £726). Flying from London Heathrow Airport to San Antonio in December is currently the most expensive (average of £1,099). 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 13 May 2026.
See what other customers who have flown with Scandinavian Airlines,United Airlines, andVirgin Atlantic 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.
Scandinavian Airlines
7.4
Good
1,775 reviews
Check prices

Food

6.7

Entertainment

6.7

Overall

7.4

Comfort

7.3

Crew

8.0

Boarding

7.7

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
Scandinavian Airlines
7.4
Good
1,775 reviews
Scandinavian Airlines
7.4
Good
1,775 reviews
Check prices

Food

6.7

Entertainment

6.7

Overall

7.4

Comfort

7.3

Crew

8.0

Boarding

7.7

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
United Airlines
7.4
Good
9,711 reviews
Scandinavian Airlines
7.4
Good
1,775 reviews
Check prices

Food

6.7

Entertainment

6.7

Overall

7.4

Comfort

7.3

Crew

8.0

Boarding

7.7

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
Virgin Atlantic
7.4
Good
688 reviews
Scandinavian Airlines
7.4
Good
1,775 reviews
Check prices

Food

6.7

Entertainment

6.7

Overall

7.4

Comfort

7.3

Crew

8.0

Boarding

7.7

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
Lufthansa
6.8
Okay
7,996 reviews
Scandinavian Airlines
7.4
Good
1,775 reviews
Check prices

Food

6.7

Entertainment

6.7

Overall

7.4

Comfort

7.3

Crew

8.0

Boarding

7.7

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.
British Airways
6.7
Okay
7,977 reviews
Scandinavian Airlines
7.4
Good
1,775 reviews
Check prices

Food

6.7

Entertainment

6.7

Overall

7.4

Comfort

7.3

Crew

8.0

Boarding

7.7

Reviews

1 / 20
6.0
Good

lisa,May 2026

ALC - OSL

Uncomfortable seats on packed flight. There was plenty of overhead bin space. Cabin crew weren't friendly but the cockpit pointed out things we were flying over, like Paris. Cup of coffee, tea or water for 3.5hrs. Good de-planing from both ends.

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 £740, Scandinavian Airlines can have you in San Antonio from London Heathrow Airport in 21h 47m. 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 (£336), Scandinavian Airlines (£551), and Finnair (£580) offers the cheapest pricing from London Heathrow Airport to San Antonio. These flights start at 62% 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Antonio (average of £726). Flying from London Heathrow Airport to San Antonio in December is currently the most expensive (average of £1,099). 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 13 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£336Average£776FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Scandinavian AirlinesCheapest£551Average£825FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
FinnairCheapest£580Average£884FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£682Average£903FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£700Average£901FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£701Average£920FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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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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