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

For as low as $596, Delta can have you in London Heathrow Airport from San Antonio in 13h 55m. There are 4967 mi between San Antonio and London Heathrow Airport. This flight may include one or multiple stops.

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

Cheapflights users have booked flights from San Antonio to London Heathrow Airport round-trip from $530. Other airlines that can offer you cheap pricing are United Airlines, from $531, and Delta, from $531. American Airlines is 45% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

What are the most popular airlines that fly from San Antonio to London Heathrow Airport?

When booking a flight from San Antonio to London Heathrow Airport, you may want to consider flying on British Airways, United Airlines or American Airlines as they are the most popular for this route.

Most accurate provider : When it comes to deals on San Antonio-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Antonio-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Antonio-London Heathrow Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Antonio-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from San Antonio to London Heathrow?

Located just 7.6 mi from the city center, San Antonio is the airport most travelers will use when flying to London Heathrow from San Antonio. Booking flights from San Antonio (SAT) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 6 different airlines.

Can I find deals for flights from San Antonio to Heathrow that include hotel bookings?

Yes. In addition to deals on San Antonio to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Antonio to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Heathrow.

Can I find deals for business class flights from San Antonio to Heathrow?

Yes. Cheapflights offers flight deals from San Antonio to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$280+ Flights from San Antonio to London Heathrow Airport

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1. Tell us where you want to go

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2. Select your favorite providers

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Cheapflights Tip: The best prices from San Antonio to London Heathrow are usually found in October or August, booked 75 days in advance, depart on a Thursday or Sunday and return on a Monday

Find flight deals from San Antonio to Heathrow

Cheapest flights from San Antonio to Heathrow
Explore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

Wed 12/312:10 pmSAT - LHR

1 stop11h 55mDelta

Fri 1/99:40 amLHR - SAT

2 stops19h 43mDelta

Deal found 11/26

$587

Wed 12/1012:10 pmSAT - LHR

1 stop13h 55mVirgin Atlantic

Wed 12/1711:20 amLHR - SAT

1 stop18h 29mVirgin Atlantic

Deal found 11/26

$596

Wed 12/315:20 amSAT - LHR

1 stop21h 25mDelta

Sat 1/109:40 amLHR - SAT

2 stops19h 43mDelta

Deal found 11/26

$612

Sun 12/71:06 pmSAT - LHR

1 stop11h 19mVirgin Atlantic

Sun 12/1411:20 amLHR - SAT

1 stop18h 29mVirgin Atlantic

Deal found 11/26

$646

Wed 12/315:10 amSAT - LHR

1 stop20h 40mDelta

Wed 1/78:00 pmLHR - SAT

1 stop21h 35mDelta

Deal found 11/26

$654

Tue 12/166:25 amSAT - LHR

1 stop18h 40mDelta

Fri 1/910:10 amLHR - SAT

2 stops19h 13mDelta

Deal found 11/26

$666

Tue 12/304:05 pmSAT - LHR

1 stop12h 10mUnited Airlines

Fri 1/91:35 pmLHR - SAT

1 stop15h 40mUnited Airlines

Deal found 11/26

$676

Tue 12/304:05 pmSAT - LHR

1 stop12h 10mUnited Airlines

Thu 1/812:05 pmLHR - SAT

1 stop13h 36mUnited Airlines

Deal found 11/26

$688

Best flights from San Antonio to Heathrow
Discover carefully curated flight deals from San Antonio to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 26, 2025.

Wed 12/315:10 amSAT - LHR

1 stop20h 40mDelta

Fri 1/91:00 pmLHR - SAT

1 stop28h 27mDelta

Deal found 11/26

$587

Wed 12/1012:10 pmSAT - LHR

1 stop13h 55mVirgin Atlantic

Wed 12/1711:20 amLHR - SAT

1 stop18h 29mVirgin Atlantic

Deal found 11/26

$596

Mon 2/21:40 pmSAT - LHR

2 stops20h 20mScandinavian Airlines

Mon 3/96:40 amLHR - SAT

3 stops22h 52mScandinavian Airlines

Deal found 11/25

$604

Wed 2/412:55 pmSAT - LHR

1 stop14h 25mDelta

Wed 2/1111:30 amLHR - SAT

2 stops19h 08mDelta

Deal found 11/26

$596

Wed 12/316:40 amSAT - LHR

1 stop21h 20mDelta

Sat 1/1011:05 amLHR - SAT

1 stop16h 29mDelta

Deal found 11/26

$612

Fri 1/301:40 pmSAT - LHR

1 stop16h 00mDelta

Tue 2/36:30 amLHR - SAT

2 stops16h 52mDelta

Deal found 11/24

$625

Thu 2/196:40 amSAT - LHR

1 stop18h 25mDelta

Mon 2/2311:45 amLHR - SAT

2 stops18h 49mDelta

Deal found 11/24

$625

Mon 2/94:29 pmSAT - LHR

2 stops15h 16mDelta

Sun 2/156:30 amLHR - SAT

2 stops19h 55mDelta

Deal found 11/24

$630

Tue 3/241:00 pmSAT - LHR

1 stop12h 55mDelta

Tue 3/318:40 amLHR - SAT

2 stops20h 02mDelta

Deal found 11/25

$633

Mon 2/210:45 amSAT - LHR

1 stop15h 05mDelta

Mon 3/911:30 amLHR - SAT

2 stops18h 02mDelta

Deal found 11/25

$646

Last-minute flights from San Antonio to Heathrow
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated November 26, 2025 and is based on user searches.

Sun 12/71:06 pmSAT - LHR

1 stop11h 19mVirgin Atlantic

Sun 12/1411:20 amLHR - SAT

1 stop18h 29mVirgin Atlantic

Deal found 11/26

$646

Wed 12/1012:10 pmSAT - LHR

1 stop13h 55mVirgin Atlantic

Wed 12/1711:20 amLHR - SAT

1 stop18h 29mVirgin Atlantic

Deal found 11/26

$596

Tue 12/166:25 amSAT - LHR

1 stop18h 40mDelta

Fri 1/910:10 amLHR - SAT

2 stops19h 13mDelta

Deal found 11/26

$666

Tue 12/3011:28 amSAT - LHR

1 stop14h 02mUnited Airlines

Fri 1/98:00 amLHR - SAT

2 stops17h 41mUnited Airlines

Deal found 11/26

$676

Tue 12/304:05 pmSAT - LHR

1 stop12h 10mUnited Airlines

Thu 1/812:05 pmLHR - SAT

1 stop13h 36mUnited Airlines

Deal found 11/26

$688

Wed 12/312:10 pmSAT - LHR

1 stop11h 55mDelta

Fri 1/99:40 amLHR - SAT

2 stops19h 43mDelta

Deal found 11/26

$587

Wed 12/315:20 amSAT - LHR

1 stop21h 25mDelta

Sat 1/109:40 amLHR - SAT

2 stops19h 43mDelta

Deal found 11/26

$612

Wed 12/315:10 amSAT - LHR

1 stop20h 40mDelta

Thu 1/810:45 amLHR - SAT

1 stop16h 43mDelta

Deal found 11/26

$654

Wed 12/315:10 amSAT - LHR

1 stop19h 15mDelta

Wed 1/710:45 amLHR - SAT

1 stop18h 38mDelta

Deal found 11/26

$662

One-way flights from San Antonio to Heathrow
Search for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated November 26, 2025.

Thu 12/43:10 pmSAT - LHR

3 stops34h 00mMultiple Airlines

Deal found 11/23

$280

Mon 12/81:55 pmSAT - LHR

3 stops36h 35mMultiple Airlines

Deal found 11/24

$318

Tue 12/96:10 pmSAT - LHR

3 stops34h 40mMultiple Airlines

Deal found 11/23

$332

Tue 12/27:37 pmSAT - LHR

3 stops35h 13mMultiple Airlines

Deal found 11/26

$356

Fri 12/57:55 pmSAT - LHR

3 stops35h 45mMultiple Airlines

Deal found 11/26

$357

Mon 12/17:37 pmSAT - LHR

3 stops59h 13mMultiple Airlines

Deal found 11/26

$389

Mon 12/81:06 pmSAT - LHR

2 stops20h 54mScandinavian Airlines

Deal found 11/24

$396

Fri 12/121:55 pmSAT - LHR

3 stops35h 15mMultiple Airlines

Deal found 11/25

$410

Sun 12/145:46 pmSAT - LHR

3 stops33h 29mMultiple Airlines

Deal found 11/23

$415

Cheap flight deals from San Antonio to Heathrow

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$587 (Delta)
One-way from	$280 (Mytrip)
Popular in	December
Cheapest in	October
Average price	$857

Provider with most accurate pricing for San Antonio-London Heathrow flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Antonio-London Heathrow flights.

Search Deals

From San Antonio to London Heathrow

Search Deals

One-way flight from San Antonio to London Heathrow

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($108 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($59 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 2025

Search Deals

Cheapflights 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

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 12/31

5:10 am-7:50 am

1 stop20h 40m

London Heathrow

Fri 1/9

1:00 pm-11:27 am

1 stop28h 27m

$587

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 12/10

12:10 pm-8:05 am

1 stop13h 55m

London Heathrow

Wed 12/17

11:20 am-11:49 pm

1 stop18h 29m

$596

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 2/4

12:55 pm-9:20 am

1 stop14h 25m

London Heathrow

Wed 2/11

11:30 am-12:38 am

2 stops19h 08m

$596

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 2/2

1:40 pm-4:00 pm

2 stops20h 20m

London Heathrow

Mon 3/9

6:40 am-12:32 am

3 stops22h 52m

$604

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 12/31

6:40 am-10:00 am

1 stop21h 20m

London Heathrow

Sat 1/10

11:05 am-9:34 pm

1 stop16h 29m

$612

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 1/30

1:40 pm-11:40 am

1 stop16h 00m

London Heathrow

Tue 2/3

6:30 am-5:22 pm

2 stops16h 52m

$625

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 2/19

6:40 am-7:05 am

1 stop18h 25m

London Heathrow

Mon 2/23

11:45 am-12:34 am

2 stops18h 49m

$625

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 2/9

4:29 pm-1:45 pm

2 stops15h 16m

London Heathrow

Sun 2/15

6:30 am-8:25 pm

2 stops19h 55m

$630

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 3/24

1:00 pm-6:55 am

1 stop12h 55m

London Heathrow

Tue 3/31

8:40 am-10:42 pm

2 stops20h 02m

$633

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 2/2

10:45 am-7:50 am

1 stop15h 05m

London Heathrow

Mon 3/9

11:30 am-12:32 am

2 stops18h 02m

$646

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Showing 1-10 of 20 results

Compare providers for flights from San Antonio to Heathrow

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Heathrow in November.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
oojo	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Antonio-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Antonio-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Antonio-London Heathrow Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Antonio-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Antonio to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Antonio with our price prediction graph.

Estimated round-trip 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 San Antonio to London Heathrow Airport

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

To ensure you get the cheapest price possible for a flight from San Antonio to London Heathrow Airport, you should look to book at least 74 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 San Antonio to London Heathrow Airport?

Currently, September is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of $527). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $842). 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 SAT to LHR?

When flying from San Antonio to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 13% versus a flight in the evening.

What is the cheapest day to fly from San Antonio to London Heathrow Airport?

Travelers seeking maximum savings on their San Antonio to London Heathrow Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Heathrow

Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from San Antonio to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

7,998 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,046 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

American Airlines

7.2

Good

11,038 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Iberia

7.0

Good

3,034 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

British Airways

6.7

Okay

7,539 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

What airport do you fly from for flights from San Antonio to London Heathrow?
Located just 7.6 mi from the city center, San Antonio is the airport most travelers will use when flying to London Heathrow from San Antonio. Booking flights from San Antonio (SAT) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 6 different airlines.
How long is the flight from San Antonio to London Heathrow Airport?
For as low as $596, Delta can have you in London Heathrow Airport from San Antonio in 13h 55m. There are 4967 mi between San Antonio and London Heathrow Airport. This flight may include one or multiple stops.
What are the cheapest airlines flying from San Antonio to London Heathrow Airport round-trip?
Cheapflights users have booked flights from San Antonio to London Heathrow Airport round-trip from $530. Other airlines that can offer you cheap pricing are United Airlines, from $531, and Delta, from $531. American Airlines is 45% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for flights from San Antonio to Heathrow that include hotel bookings?
Yes. In addition to deals on San Antonio to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Antonio to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Heathrow.
Can I find deals for business class flights from San Antonio to Heathrow?
Yes. Cheapflights offers flight deals from San Antonio to Heathrow 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 San Antonio to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of $527). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $842). 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.

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Top 6 airlines flying from San Antonio to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$530	Average$882	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$531	Average$939	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$531	Average$743	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$566	Average$888	FlexibilityNo cancel fee	On-time70%
Virgin Atlantic	Cheapest$600	Average$974	FlexibilityNo cancel fee	On-time72%
Iberia	Cheapest$668	Average$1,067	FlexibilityNo cancel fee	On-time77%

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$280+ Cheap flights from San Antonio (SAT) to Heathrow (LHR)

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Antonio to Heathrow with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Antonio to London Heathrow are usually found in October or August, booked 75 days in advance, depart on a Thursday or Sunday and return on a Monday

Find flight deals from San Antonio to Heathrow

Cheapest flights from San Antonio to HeathrowExplore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

Explore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

Cheap flight deals from San Antonio to Heathrow

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Compare providers for flights from San Antonio to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Heathrow in November.

Best time to book a flight from San Antonio to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Antonio with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to London Heathrow Airport

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

What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?

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

What is the cheapest day to fly from San Antonio to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Heathrow. 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 from for flights from San Antonio to London Heathrow?

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

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

Can I find deals for flights from San Antonio to Heathrow that include hotel bookings?

How can I find direct flights from San Antonio to Heathrow?

Can I find deals for business class flights from San Antonio to Heathrow?

What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?

Traveling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Antonio to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from San Antonio to Heathrow

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Cheapest flights from San Antonio to Heathrow
Explore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.