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Cheap flights from London Heathrow Airport to San Antonio from $531

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to San Antonio departing on 11/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to San Antonio

Cheap round-trip flights

Logo
10:20 am - 4:55 amLHR-SAT
24h 35m3 stops
Logo
2:59 pm - 9:35 pmSAT-LHR
24h 36m3 stops
$732
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Sat, Oct 18 - Wed, Oct 22
Logo
10:20 am - 4:55 amLHR-SAT
24h 35m3 stops
Logo
2:59 pm - 5:40 pmSAT-LHR
20h 41m2 stops
$738
Find Deal
Sat, Oct 18 - Wed, Oct 22
Scandinavian Airlines Logo
6:40 am - 11:59 pmLHR-SAT
23h 19m2 stops
Scandinavian Airlines Logo
3:00 pm - 6:30 pmSAT-LHR
21h 30m2 stops
$832Scandinavian Airlines
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Fri, Sep 26 - Tue, Oct 7
Scandinavian Airlines Logo
6:40 am - 11:57 pmLHR-SAT
23h 17m2 stops
Scandinavian Airlines Logo
11:33 am - 4:00 pmSAT-LHR
22h 27m2 stops
$838Scandinavian Airlines
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Thu, Aug 28 - Thu, Sep 4
Virgin Atlantic Logo
8:10 pm - 10:38 amLHR-SAT
20h 28m1 stop
Virgin Atlantic Logo
1:35 pm - 1:10 pmSAT-LHR
17h 35m1 stop
$945Virgin Atlantic
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Mon, Aug 25 - Tue, Sep 9
United Airlines Logo
7:30 am - 8:33 pmLHR-SAT
19h 03m2 stops
United Airlines Logo
5:15 pm - 11:45 amSAT-LHR
12h 30m1 stop
$947United Airlines
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Mon, Sep 15 - Mon, Sep 22
Virgin Atlantic Logo
9:35 am - 8:16 pmLHR-SAT
16h 41m2 stops
Virgin Atlantic Logo
10:37 am - 6:45 amSAT-LHR
14h 08m1 stop
$949Virgin Atlantic
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Wed, Sep 17 - Mon, Sep 29
United Airlines Logo
6:35 am - 7:37 pmLHR-SAT
19h 02m2 stops
United Airlines Logo
6:00 pm - 7:30 amSAT-LHR
31h 30m1 stop
$951United Airlines
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Sat, Nov 8 - Sun, Nov 23
Finnair Logo
8:20 am - 5:41 pmLHR-SAT
15h 21m1 stop
Finnair Logo
1:44 pm - 9:00 amSAT-LHR
13h 16m1 stop
$955Finnair
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Tue, Sep 2 - Tue, Sep 30
Finnair Logo
12:00 pm - 10:12 pmLHR-SAT
16h 12m1 stop
Finnair Logo
1:44 pm - 12:45 pmSAT-LHR
17h 01m1 stop
$960Finnair
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Mon, Aug 25 - Tue, Sep 9

Virgin Atlantic flights from London Heathrow Airport to San Antonio

Our best Virgin Atlantic deals on London Heathrow Airport to San Antonio flight tickets
Virgin Atlantic
Aug 25
LHR8:10 pmLondon Heathrow
20h 28m
1 stop
SAT10:38 amSan Antonio
Sep 9
SAT1:35 pmSan Antonio
17h 35m
1 stop
LHR1:10 pmLondon Heathrow
$945
Find similar
Virgin Atlantic
Sep 17
LHR9:35 amLondon Heathrow
16h 41m
2 stops
SAT8:16 pmSan Antonio
Sep 29
SAT10:37 amSan Antonio
14h 08m
1 stop
LHR6:45 amLondon Heathrow
$949
Find similar
Virgin Atlantic
Aug 25
LHR1:05 pmLondon Heathrow
13h 14m
1 stop
SAT8:19 pmSan Antonio
Sep 9
SAT1:35 pmSan Antonio
17h 35m
1 stop
LHR1:10 pmLondon Heathrow
$952
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United Airlines flights from London Heathrow Airport to San Antonio

Our best United Airlines deals on London Heathrow Airport to San Antonio flight tickets
United Airlines
Sep 15
LHR7:30 amLondon Heathrow
19h 03m
2 stops
SAT8:33 pmSan Antonio
Sep 22
SAT5:15 pmSan Antonio
12h 30m
1 stop
LHR11:45 amLondon Heathrow
$947
Find similar
United Airlines
Nov 8
LHR6:35 amLondon Heathrow
19h 02m
2 stops
SAT7:37 pmSan Antonio
Nov 23
SAT6:00 pmSan Antonio
31h 30m
1 stop
LHR7:30 amLondon Heathrow
$951
Find similar
United Airlines
Nov 10
LHR7:40 amLondon Heathrow
18h 35m
2 stops
SAT8:15 pmSan Antonio
Nov 30
SAT2:14 pmSan Antonio
15h 01m
2 stops
LHR11:15 amLondon Heathrow
$966
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated August 2, 2025.
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

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sat 10/18

10:20 am-4:55 am

3 stops24h 35m

San Antonio

Wed 10/22

2:59 pm-9:35 pm

3 stops24h 36m

$732

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sat 10/18

10:20 am-4:55 am

3 stops24h 35m

San Antonio

Wed 10/22

2:59 pm-5:40 pm

2 stops20h 41m

$738

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Fri 9/26

6:40 am-11:59 pm

2 stops23h 19m

San Antonio

Tue 10/7

3:00 pm-6:30 pm

2 stops21h 30m

$832

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Thu 8/28

6:40 am-11:57 pm

2 stops23h 17m

San Antonio

Thu 9/4

11:33 am-4:00 pm

2 stops22h 27m

$838

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Mon 8/25

8:10 pm-10:38 am

1 stop20h 28m

San Antonio

Tue 9/9

1:35 pm-1:10 pm

1 stop17h 35m

$945

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Mon 9/15

7:30 am-8:33 pm

2 stops19h 03m

San Antonio

Mon 9/22

5:15 pm-11:45 am

1 stop12h 30m

$947

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 9/17

9:35 am-8:16 pm

2 stops16h 41m

San Antonio

Mon 9/29

10:37 am-6:45 am

1 stop14h 08m

$949

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Sat 11/8

6:35 am-7:37 pm

2 stops19h 02m

San Antonio

Sun 11/23

6:00 pm-7:30 am

1 stop31h 30m

$951

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Tue 9/2

8:20 am-5:41 pm

1 stop15h 21m

San Antonio

Tue 9/30

1:44 pm-9:00 am

1 stop13h 16m

$955

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Mon 8/25

12:00 pm-10:12 pm

1 stop16h 12m

San Antonio

Tue 9/9

1:44 pm-12:45 pm

1 stop17h 01m

$960

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Antonio from

How to get the cheapest flight ticket from London Heathrow Airport to San Antonio

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of November, then book flights to San Antonio from London Heathrow Airport during September instead. Flights to San Antonio in September, while not as cheap as those in November, still average around $783.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Wednesday when prices can be found for as low as $973. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $1,240.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is in the morning. momondo users have found flights departing from London Heathrow Airport to San Antonio in the morning for as low as $1,222. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly at noon, with an average ticket price of $1,260. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $988 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from London Heathrow Airport for as low as $785 on momondo.

Can stopping save me money on London Heathrow Airport to San Antonio flights?

You could potentially save up to 18% on your flight if you consider stops on a London Heathrow Airport to San Antonio flight.

How have London Heathrow Airport to San Antonio flight prices changed over time?

As of August 2025, prices for London Heathrow Airport to San Antonio flights are approximately 8% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to San Antonio

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to San Antonio according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to San Antonio (LHR to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to San Antonio

Best Price Found

$531

Fastest flight time

13h 14m

Direct flights

None

Airports in San Antonio

1 airport
The best one-way flight to San Antonio from London Heathrow Airport in the past 72 hours is $531. The best round-trip flight deal from London Heathrow Airport to San Antonio found on momondo in the last 72 hours is $732.
The fastest flight from London Heathrow Airport to San Antonio takes 13h 14m
There are no direct flights from London Heathrow Airport to San Antonio. Popular non-direct route for this connection is London Heathrow Airport - San Antonio Airport.
There is 1 airport near San Antonio: San Antonio (SAT)
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  • How far is London Heathrow to San Antonio by plane?

    A flight from London Heathrow to San Antonio will travel around 4973.6 mi. In terms of flight time, this usually takes a little over 13h 14m.

  • When did momondo last update prices for flights from London Heathrow Airport to San Antonio Airport?

    Prices for flights from London Heathrow Airport to San Antonio Airport are updated daily.

  • How old do you have to be to fly from London Heathrow Airport to San Antonio Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The necessary travel and health documents for your San Antonio Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville
Boerne
Schertz
Pleasanton

Why use momondo?

Why should I use momondo to find a flight deal from London to San Antonio?

Finding the right flight to San Antonio from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Antonio quick and easy, saving you time and money.

Can I find flights from London to San Antonio with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Antonio from London with this policy.

How can momondo help me find flights from London to San Antonio?

momondo provides multiple filters to help you find the best flight to San Antonio from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to San Antonio right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Antonio, momondo offers a useful price alert feature which will track prices for flights to San Antonio from London and alert you when they change.

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