Cheap flights from London Heathrow Airport to San Antonio from £330

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAT
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from London Heathrow to San Antonio are usually found in November or March, booked 84 days in advance, depart on a Saturday or Wednesday and return on a Monday

Cheap 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 17 September 2025.

Round-trip from

£586

One-way from

£330

Popular in

August

Cheapest in

November

Average price

£706
6/12-13/12
  • 6/12-13/12
  • 4 total stops
  • 46h 54m total
  • London to San Antonio
15/1
  • 15/1
  • 2 total stops
  • 34h 12m total
  • London to San Antonio
Highest demand for flights based on searches. 16% potential increase in price (£103 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from Heathrow to San Antonio

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 17 September 2025.

Sat 1/1113:25LHR - SAT
3 stops35h 05mMultiple Airlines
Sat 15/1106:00SAT - LHR
3 stops23h 20mMultiple Airlines
Deal found 17/9£578
Sat 6/1211:20LHR - SAT
2 stops30h 27mMultiple Airlines
Sat 13/1218:23SAT - LHR
2 stops16h 27mMultiple Airlines
Deal found 17/9£586
Fri 26/906:40LHR - SAT
2 stops23h 12mScandinavian Airlines
Tue 7/1012:23SAT - LHR
2 stops23h 17mScandinavian Airlines
Deal found 16/9£588
Sat 1/1106:40LHR - SAT
2 stops22h 40mScandinavian Airlines
Sat 8/1112:23SAT - LHR
2 stops21h 37mScandinavian Airlines
Deal found 17/9£593
Wed 29/1006:40LHR - SAT
2 stops22h 40mScandinavian Airlines
Mon 10/1114:46SAT - LHR
3 stops22h 04mScandinavian Airlines
Deal found 16/9£593
Thu 30/1018:40LHR - SAT
2 stops34h 40mScandinavian Airlines
Fri 9/110:45SAT - LHR
2 stops40h 35mScandinavian Airlines
Deal found 17/9£615
Wed 29/1019:30LHR - SAT
2 stops33h 50mScandinavian Airlines
Sat 10/110:45SAT - LHR
2 stops23h 15mScandinavian Airlines
Deal found 17/9£616
Sat 1/1108:00LHR - SAT
2 stops18h 20mUnited Airlines
Sat 8/1107:05SAT - LHR
3 stops19h 25mUnited Airlines
Deal found 17/9£646
Wed 29/1013:00LHR - SAT
1 stop14h 42mVirgin Atlantic
Mon 10/1118:22SAT - LHR
1 stop11h 18mVirgin Atlantic
Deal found 16/9£648
Wed 8/1012:00LHR - SAT
1 stop13h 43mBritish Airways
Tue 14/1012:31SAT - LHR
1 stop11h 54mBritish Airways
Deal found 16/9£651

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 17 September 2025.
Use the filters below to find and compare flights from London Heathrow Airport to San Antonio that are best for you.

Fly from

Heathrow

Fly to

San Antonio

Route

Depart

Return

Price

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 29/10

06:40-00:20

2 stops22h 40m

San Antonio

Mon 10/11

14:46-18:50

3 stops22h 04m

£593

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Thu 5/2

07:05-23:33

3 stops22h 28m

San Antonio

Thu 19/2

16:10-18:30

2 stops20h 20m

£629

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Thu 5/2

06:50-20:56

2 stops20h 06m

San Antonio

Thu 19/2

12:17-06:40

1 stop12h 23m

£637

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 29/10

13:00-22:42

1 stop14h 42m

San Antonio

Mon 10/11

18:22-11:40

1 stop11h 18m

£648

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sat 1/11

13:30-21:15

2 stops36h 45m

San Antonio

Fri 14/11

19:30-07:10

2 stops29h 40m

£653

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sat 1/11

13:30-21:15

2 stops36h 45m

San Antonio

Wed 12/11

19:30-07:10

2 stops29h 40m

£653

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sat 1/11

07:30-20:15

2 stops17h 45m

San Antonio

Sat 8/11

12:12-10:50

1 stop16h 38m

£654

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 8/10

07:25-21:29

2 stops20h 04m

San Antonio

Tue 14/10

17:56-11:35

1 stop11h 39m

£656

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Fri 31/10

07:30-20:15

2 stops17h 45m

San Antonio

Fri 7/11

11:40-09:10

2 stops15h 30m

£659

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Fri 31/10

08:30-22:56

2 stops19h 26m

San Antonio

Fri 7/11

16:24-10:15

1 stop11h 51m

£659

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 20 results
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 12 September 2025.

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 84 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to San Antonio (average of £732). Flying from London Heathrow Airport to San Antonio in August is currently the most expensive (average of £1,125). 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.

What is the cheapest time of day to fly from LHR to SAT?

Find hourly flight availability from Heathrow to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 September 2025.

When flying from London Heathrow Airport to San Antonio, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 18% versus a flight in the evening.

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 17 September 2025.
See what other customers who have flown with Finnair, Scandinavian 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.

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.5

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.5

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.5

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.5

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.5

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.5

Boarding

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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 7 different airlines.

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

    For as low as £648, Scandinavian Airlines can have you in San Antonio from London Heathrow Airport in 14h 42m. The distance from London Heathrow Airport to San Antonio is about 4967 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    According to our current data, Finnair (£500), Iberia (£525), and Scandinavian Airlines (£586) 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to San Antonio (average of £732). Flying from London Heathrow Airport to San Antonio in August is currently the most expensive (average of £1,125). 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 7 airlines flying from Heathrow to San Antonio

Discover the top 7 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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£500Average£588FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£525Average£794FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Scandinavian AirlinesCheapest£586Average£740FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Virgin AtlanticCheapest£665Average£803FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£682Average£773FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£688Average£826FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£695Average£884FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

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