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Cheap flights from London Heathrow Airport to San Antonio from £342

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 16/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAT
22 Aug — 29 Aug1
1 adult

Cheapflights Tip: The best prices from London Heathrow to San Antonio are usually found in November or September, booked 79 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 August 2025.

Round-trip from

£574

One-way from

£342

Popular in

July

Cheapest in

November

Average price

£873
Scandinavian Airlines
  • Scandinavian Airlines
  • 26/9-7/10
  • 4 total stops
  • 55h 22m total
  • London to San Antonio
Search Deals
16/10
  • 16/10
  • 3 total stops
  • 40h 50m total
  • London to San Antonio
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£107 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

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 August 2025.

Fri 26/919:30LHR - SAT
2 stops33h 47mScandinavian Airlines
Tue 7/1014:55SAT - LHR
2 stops21h 35mScandinavian Airlines
Deal found 16/8£574
Thu 11/906:40LHR - SAT
2 stops21h 39mScandinavian Airlines
Wed 1/1016:00SAT - LHR
2 stops19h 40mScandinavian Airlines
Deal found 16/8£583
Wed 10/906:40LHR - SAT
2 stops23h 17mScandinavian Airlines
Mon 15/911:35SAT - LHR
2 stops28h 05mScandinavian Airlines
Deal found 15/8£593
Wed 17/906:40LHR - SAT
2 stops23h 19mScandinavian Airlines
Mon 22/915:25SAT - LHR
2 stops21h 05mScandinavian Airlines
Deal found 15/8£600
Wed 10/913:25LHR - SAT
3 stops30h 24mMultiple Airlines
Mon 15/919:17SAT - LHR
3 stops35h 23mMultiple Airlines
Deal found 15/8£626
Thu 9/1019:30LHR - SAT
2 stops34h 50mScandinavian Airlines
Thu 4/1212:15SAT - LHR
2 stops23h 25mScandinavian Airlines
Deal found 15/8£682

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 August 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

Fri 26/9

19:30-23:17

2 stops33h 47m

San Antonio

Tue 7/10

14:55-18:30

2 stops21h 35m

£574

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Thu 11/9

06:40-22:19

2 stops21h 39m

San Antonio

Wed 1/10

16:00-17:40

2 stops19h 40m

£583

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 10/9

06:40-23:57

2 stops23h 17m

San Antonio

Mon 15/9

11:35-21:40

2 stops28h 05m

£593

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 17/9

06:40-23:59

2 stops23h 19m

San Antonio

Mon 22/9

15:25-18:30

2 stops21h 05m

£600

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 10/9

13:25-13:49

3 stops30h 24m

San Antonio

Mon 15/9

19:17-12:40

3 stops35h 23m

£626

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Thu 9/10

19:30-00:20

2 stops34h 50m

San Antonio

Thu 4/12

12:15-17:40

2 stops23h 25m

£682

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Thu 16/10

06:00-16:50

3 stops40h 50m

£342

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Fri 3/10

06:00-20:52

3 stops44h 52m

£381

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 15/10

22:15-16:50

3 stops48h 35m

£391

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sun 30/11

14:50-14:07

3 stops53h 17m

£482

Flights are sorted by cheapest return flights first.

Deals found on 15/8

Showing 1-10 of 11 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 8 August 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 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, 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 August 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.

What’s the top stopover airport for flights from London Heathrow Airport to San Antonio?

Share of one-stop return flights from London Heathrow Airport to San Antonio chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Dallas (DFW) – chosen by Cheapflights users on 72% of one-stop itineraries from London Heathrow Airport to San Antonio on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to San Antonio?

Average return fare for one-stop flights from London Heathrow Airport to San Antonio, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Washington, D.C. (IAD) is the most affordable one-stop option, with an average return flight price of £718.

What’s the fastest stopover option from London Heathrow Airport to San Antonio?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Charlotte (CLT) have the shortest average one-way travel time for one-stop routes: 13h 00m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to San Antonio?

Average stopover duration for one-stop one-way flights from London Heathrow Airport to San Antonio, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Charlotte (CLT) offer the fastest connection on this route, with an average stopover time of 1h 00m.

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 August 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.
Finnair
7.6
Good
1,321 reviews
Check prices

Comfort

7.5

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

Crew

8.1

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.
Finnair
7.6
Good
1,321 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Comfort

7.5

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

Crew

8.1

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.
Scandinavian Airlines
7.4
Good
1,469 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Comfort

7.5

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

Crew

8.1

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.
Virgin Atlantic
7.4
Good
657 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Comfort

7.5

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

Crew

8.1

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.
Lufthansa
6.8
Okay
7,325 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Comfort

7.5

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

Crew

8.1

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.
British Airways
6.7
Okay
7,271 reviews
Finnair
7.6
Good
1,321 reviews
Check prices

Comfort

7.5

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

Crew

8.1

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.

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

    According to our current data, Finnair (£503), Iberia (£529), and Scandinavian Airlines (£590) offers the cheapest pricing from London Heathrow Airport to San Antonio. These flights start at 30% 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

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Alternative routes for Heathrow to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
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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 August 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£503Average£592FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£529Average£799FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Scandinavian AirlinesCheapest£590Average£749FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Virgin AtlanticCheapest£650Average£811FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£672Average£833FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£698Average£804FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£700Average£890FlexibilityNo 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.

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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