What airlines fly to London Heathrow Airport?

British Airways, American Airlines and United Airlines are the top three most popular airlines that fly to London Heathrow Airport from San Antonio according to our data. British Airways is the first choice among our users, with 66% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 9 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from San Antonio to London Heathrow?

United Airlines and Delta are the most popular carriers operating from San Antonio to London Heathrow

Which layover airport has the shortest connection time from San Antonio to London Heathrow Airport?

Atlanta (ATL) has the shortest average layover time for this route: 1h 10m.

Which layover airport offers the lowest fares from San Antonio to London Heathrow Airport?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $655.

Which layover airport has the shortest travel time from San Antonio to London Heathrow Airport?

Flights connecting via Houston (IAH) have the shortest average one-way travel time: 11h 15m.

Which airport is the most popular layover for flights between San Antonio and London Heathrow Airport?

Dallas (DFW) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

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

Prices for flights from San Antonio Airport to London Heathrow Airport are refreshed on a daily basis.

How many operators does momondo search for flights from San Antonio Airport to London Heathrow Airport?

As of August 2026, there are 5 operators available to choose from for flights from San Antonio Airport to London Heathrow Airport.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$382 Cheap Flights from San Antonio to London Heathrow Airport in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Antonio to London

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:20 am - 11:50 amSAT San Antonio-LHR London Heathrow

22h 30m2 stops San Francisco Vancouver Intl

7:30 am - 8:53 pmLHR London Heathrow-SAT San Antonio

19h 23m2 stops Frankfurt am Main Denver Intl

$751United Airlines

Tue, Nov 17 - Thu, Nov 19

5:30 am - 11:15 amSAT San Antonio-LHR London Heathrow

23h 45m3 stops Houston George Bush Intcntl Los Angeles Los Angeles San Francisco

7:30 am - 8:53 pmLHR London Heathrow-SAT San Antonio

19h 23m2 stops Frankfurt am Main Denver Intl

$755United Airlines

Tue, Nov 17 - Thu, Nov 19

2:55 pm - 8:15 amSAT San Antonio-LHR London Heathrow

11h 20m1 stop Dallas/Fort Worth

7:40 pm - 8:29 amLHR London Heathrow-SAT San Antonio

18h 49m2 stops Madrid Barajas Dallas/Fort Worth

$845Iberia

Tue, Dec 1 - Wed, Dec 9

10:00 am - 7:10 amSAT San Antonio-LHR London Heathrow

15h 10m2 stops Houston George Bush Intcntl Montreal Pierre Elliott Trudeau Intl

11:10 am - 10:58 pmLHR London Heathrow-SAT San Antonio

17h 48m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$850Multiple Airlines

Tue, Dec 1 - Wed, Dec 9

1:46 pm - 7:50 amSAT San Antonio-LHR London Heathrow

12h 04m1 stop Atlanta Hartsfield-Jackson

11:45 am - 11:25 pmLHR London Heathrow-SAT San Antonio

17h 40m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$873Delta

Sun, Nov 15 - Fri, Nov 27

1:46 pm - 7:50 amSAT San Antonio-LHR London Heathrow

12h 04m1 stop Atlanta Hartsfield-Jackson

10:00 am - 11:25 pmLHR London Heathrow-SAT San Antonio

19h 25m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$873Delta

Mon, Nov 16 - Fri, Nov 27

4:50 pm - 5:35 pmSAT San Antonio-LHR London Heathrow

18h 45m1 stop Los Angeles Los Angeles

10:45 am - 11:07 pmLHR London Heathrow-SAT San Antonio

18h 22m1 stop Detroit Metropolitan Wayne County

$886Virgin Atlantic

Mon, Sep 21 - Tue, Oct 6

3:00 pm - 10:00 amSAT San Antonio-LHR London Heathrow

13h 00m1 stop Dallas/Fort Worth

1:50 pm - 10:00 pmLHR London Heathrow-SAT San Antonio

14h 10m1 stop Dallas/Fort Worth

$887British Airways

Wed, Jan 6 - Tue, Jan 19

10:51 am - 6:50 amSAT San Antonio-LHR London Heathrow

13h 59m2 stops Atlanta Hartsfield-Jackson Boston Logan Intl

6:30 am - 5:27 pmLHR London Heathrow-SAT San Antonio

16h 57m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$931Virgin Atlantic

Fri, Dec 4 - Tue, Dec 8

6:34 pm - 10:00 amSAT San Antonio-LHR London Heathrow

33h 26m1 stop Dallas/Fort Worth

8:45 am - 8:34 amLHR London Heathrow-SAT San Antonio

29h 49m2 stops Madrid Barajas Dallas/Fort Worth

$959British Airways

Sat, Nov 14 - Mon, Nov 30

Cheap last minute flights

Enter your travel dates to find the best prices.

1:43 pm - 2:25 pmSAT San Antonio-LHR London Heathrow

18h 42m1 stop Dallas/Fort Worth

10:05 am - 6:39 pmLHR London Heathrow-SAT San Antonio

14h 34m1 stop Dallas/Fort Worth

$1,012Finnair

Sun, Aug 23 - Fri, Sep 4

6:04 pm - 1:05 pmSAT San Antonio-LHR London Heathrow

13h 01m1 stop Minneapolis St Paul

6:30 am - 5:11 pmLHR London Heathrow-SAT San Antonio

16h 41m2 stops Amsterdam Schiphol Minneapolis St Paul

$1,019KLM

Sun, Aug 23 - Fri, Sep 4

9:10 am - 6:55 amSAT San Antonio-LHR London Heathrow

15h 45m2 stops Denver Intl Washington, D.C. Dulles Intl

6:50 am - 4:31 pmLHR London Heathrow-SAT San Antonio

15h 41m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$1,027United Airlines

Mon, Aug 24 - Wed, Oct 21

11:29 am - 7:10 amSAT San Antonio-LHR London Heathrow

13h 41m1 stop Detroit Metropolitan Wayne County

8:40 am - 9:29 pmLHR London Heathrow-SAT San Antonio

18h 49m2 stops Amsterdam Schiphol Minneapolis St Paul

$1,027Delta

Sun, Aug 23 - Tue, Sep 1

12:05 pm - 6:25 amSAT San Antonio-LHR London Heathrow

12h 20m1 stop Atlanta Hartsfield-Jackson

9:55 am - 9:48 pmLHR London Heathrow-SAT San Antonio

17h 53m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$1,027Delta

Mon, Aug 24 - Wed, Oct 21

6:25 am - 7:15 amSAT San Antonio-LHR London Heathrow

18h 50m1 stop Atlanta Hartsfield-Jackson

6:30 am - 5:34 pmLHR London Heathrow-SAT San Antonio

17h 04m2 stops Amsterdam Schiphol Minneapolis St Paul

$1,027Delta

Mon, Aug 24 - Wed, Oct 21

12:15 pm - 10:00 amSAT San Antonio-LHR London Heathrow

15h 45m2 stops Washington, D.C. Dulles Intl Montreal Pierre Elliott Trudeau Intl

7:25 am - 10:13 pmLHR London Heathrow-SAT San Antonio

20h 48m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$1,029Multiple Airlines

Mon, Aug 24 - Wed, Oct 21

7:35 am - 5:55 amSAT San Antonio-LHR London Heathrow

16h 20m2 stops Houston George Bush Intcntl Newark

6:50 am - 4:31 pmLHR London Heathrow-SAT San Antonio

15h 41m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$1,031United Airlines

Mon, Aug 24 - Wed, Oct 21

2:45 pm - 9:00 amSAT San Antonio-LHR London Heathrow

12h 15m1 stop Dallas/Fort Worth

11:30 am - 10:54 pmLHR London Heathrow-SAT San Antonio

17h 24m2 stops Madrid Barajas Dallas/Fort Worth

$1,117British Airways

Fri, Aug 21 - Sat, Aug 29

9:27 am - 6:20 amSAT San Antonio-LHR London Heathrow

14h 53m1 stop Dallas/Fort Worth

10:50 am - 10:54 pmLHR London Heathrow-SAT San Antonio

18h 04m2 stops Madrid Barajas Dallas/Fort Worth

$1,117British Airways

Fri, Aug 21 - Sat, Aug 29

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Delta flights from San Antonio to London Heathrow Airport

Our best Delta deals on San Antonio to London Heathrow Airport flight tickets

Delta

Nov 15

SAT7:50 amSan Antonio

16h 35m

1 stop

LHR6:25 amLondon Heathrow

Dec 3

LHR11:45 amLondon Heathrow

17h 40m

2 stops

SAT11:25 pmSan Antonio

$873

Delta

Dec 7

SAT12:53 pmSan Antonio

14h 32m

1 stop

LHR9:25 amLondon Heathrow

Dec 10

LHR6:30 amLondon Heathrow

17h 13m

2 stops

SAT5:43 pmSan Antonio

$874

Delta

Dec 30

SAT6:45 amSan Antonio

19h 00m

2 stops

LHR7:45 amLondon Heathrow

Jan 13

LHR10:00 amLondon Heathrow

19h 20m

2 stops

SAT11:20 pmSan Antonio

$878

Lufthansa flights from San Antonio to London Heathrow Airport

Our best Lufthansa deals on San Antonio to London Heathrow Airport flight tickets

Lufthansa

Oct 26

SAT2:20 pmSan Antonio

19h 25m

2 stops

LHR2:45 pmLondon Heathrow

Nov 10

LHR7:40 amLondon Heathrow

19h 13m

2 stops

SAT8:53 pmSan Antonio

$890

Lufthansa

Nov 17

SAT11:45 amSan Antonio

21h 00m

2 stops

LHR2:45 pmLondon Heathrow

Nov 23

LHR7:30 pmLondon Heathrow

31h 56m

2 stops

SAT9:26 pmSan Antonio

$907

Lufthansa

Nov 17

SAT11:45 amSan Antonio

21h 00m

2 stops

LHR2:45 pmLondon Heathrow

Nov 23

LHR7:30 pmLondon Heathrow

31h 56m

2 stops

SAT9:26 pmSan Antonio

$908

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Tue 11/17

7:20 am-11:50 am

2 stops22h 30m

London Heathrow

Thu 11/19

7:30 am-8:53 pm

2 stops19h 23m

$751

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Tue 11/17

5:30 am-11:15 am

3 stops23h 45m

London Heathrow

Thu 11/19

7:30 am-8:53 pm

2 stops19h 23m

$755

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Tue 12/1

2:55 pm-8:15 am

1 stop11h 20m

London Heathrow

Wed 12/9

7:40 pm-8:29 am

2 stops18h 49m

$845

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Tue 12/1

10:00 am-7:10 am

2 stops15h 10m

London Heathrow

Wed 12/9

11:10 am-10:58 pm

2 stops17h 48m

$850

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 11/15

1:46 pm-7:50 am

1 stop12h 04m

London Heathrow

Fri 11/27

11:45 am-11:25 pm

2 stops17h 40m

$873

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 11/16

1:46 pm-7:50 am

1 stop12h 04m

London Heathrow

Fri 11/27

10:00 am-11:25 pm

2 stops19h 25m

$873

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 9/21

4:50 pm-5:35 pm

1 stop18h 45m

London Heathrow

Tue 10/6

10:45 am-11:07 pm

1 stop18h 22m

$886

Quickest round-trip

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Wed 1/6

3:00 pm-10:00 am

1 stop13h 00m

London Heathrow

Tue 1/19

1:50 pm-10:00 pm

1 stop14h 10m

$887

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Fri 12/4

10:51 am-6:50 am

2 stops13h 59m

London Heathrow

Tue 12/8

6:30 am-5:27 pm

2 stops16h 57m

$931

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sat 11/14

6:34 pm-10:00 am

1 stop33h 26m

London Heathrow

Mon 11/30

8:45 am-8:34 am

2 stops29h 49m

$959

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between San Antonio and London Heathrow Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $754 to $1,115.
The lowest price recently found on this route was $751.

What is the cheapest month to fly to London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from San Antonio, with most prices found around $739. If you’re not able to fly to London Heathrow Airport in October, then November is your next best option. Flight prices from San Antonio to London Heathrow Airport during November average around $799.

How far in advance should I book a flight from San Antonio to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $961 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Antonio for as low as $665 on momondo.

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

You could potentially save up to 8% on your flight if you consider stops on a San Antonio to London Heathrow Airport flight.

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

As of August 2026, prices for San Antonio to London Heathrow Airport flights are approximately 16% cheaper when compared to flights at the same time last year.

When to book flights from San Antonio to London Heathrow Airport

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

Estimated round-trip price

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

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

Best Price Found	$382
Fastest flight time	11h 25m
Direct flights	None

The best one-way flight to London Heathrow Airport from San Antonio in the past 72 hours is $382. The best round-trip flight deal from San Antonio to London Heathrow Airport found on momondo in the last 72 hours is $751.

The fastest flight from San Antonio to London Heathrow Airport takes 11h 25m

There are no direct flights from San Antonio to London Heathrow Airport. There are no popular flight routes from San Antonio to London Heathrow Airport.

Search flight deals

Frequently asked questions about flying from San Antonio to London Heathrow Airport

How far is San Antonio to London Heathrow by plane?
There are 4973.6 mi between San Antonio and London Heathrow. 11h 25m is a normal flight duration for this route.
When did momondo last update prices for flights from San Antonio Airport to London Heathrow Airport?
Prices for flights from San Antonio Airport to London Heathrow Airport are refreshed on a daily basis.
How many operators does momondo search for flights from San Antonio Airport to London Heathrow Airport?
As of August 2026, there are 5 operators available to choose from for flights from San Antonio Airport to London Heathrow Airport.
How old do you have to be to fly from San Antonio Airport to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from San Antonio to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from San Antonio to London Heathrow Airport is British Airways, representing 29% of all bookings. The subsequent popular airlines are American Airlines at 26%, United Airlines at 24%, and Delta at 11%.

Best airlines flying from San Antonio to London Heathrow Airport

Compare and see reviews for airlines that fly from San Antonio to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $530	Free Cancellation	Rating 7.8 8,504 reviews	Search Delta flights
American Airlines	PriceFrom $530	Free Cancellation	Rating 7.1 11,968 reviews	Search American Airlines flights
United Airlines	PriceFrom $531	Free Cancellation	Rating 7.4 10,101 reviews	Search United Airlines flights
British Airways	PriceFrom $580	Free Cancellation	Rating 6.7 8,179 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom $600	Free Cancellation	Rating 7.4 695 reviews	Search Virgin Atlantic flights

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Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from San Antonio.

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

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

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

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

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

If you are not ready to book a flight from San Antonio to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport trip

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Flights to London Gatwick Airportfrom $403

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Flights to London City Airportfrom $644

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Flights to Belfast Intl Airportfrom $665

Flights to London Southend Airportfrom $723

Flights to Belfast City Airportfrom $683

Cheap flights from San Antonio to London from $382

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to London departing on 12/11. 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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Delta flights from San Antonio to London Heathrow Airport

Our best Delta deals on San Antonio to London Heathrow Airport flight tickets

Lufthansa flights from San Antonio to London Heathrow Airport

Our best Lufthansa deals on San Antonio to London Heathrow Airport flight tickets

momondo Fare Finder

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

See travel insights to London from

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

What is the typical price of a round-trip flight between San Antonio and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

How far in advance should I book a flight from San Antonio to London Heathrow Airport?

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

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

What is the cheapest airline that flies from San Antonio to London Heathrow?

What airlines fly to London Heathrow Airport?

Which airport is the most popular layover for flights between San Antonio and London Heathrow Airport?

Which layover airport offers the lowest fares from San Antonio to London Heathrow Airport?

Which layover airport has the shortest travel time from San Antonio to London Heathrow Airport?

Which layover airport has the shortest connection time from San Antonio to London Heathrow Airport?

When to book flights from San Antonio to London Heathrow Airport

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from San Antonio to London Heathrow Airport

Best airlines flying from San Antonio to London Heathrow Airport

Compare and see reviews for airlines that fly from San Antonio to London Heathrow Airport with momondo

Traveling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

San Antonio flight routes

According to popular flight searches on momondo this year

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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