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

A quick flight from San Antonio to London Heathrow Airport can take about 13h 25m. Delta provides one of the quickest options available for as low as £472. The distance from San Antonio to London Heathrow Airport is about 4967 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

San Antonio (SAT), located 7.6 mi from the city center, is the airport you fly out of when you book flights from San Antonio to London Heathrow. 0 airlines have flights from San Antonio to London Heathrow on a regular basis. Booking flights from San Antonio to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

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 holiday 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.

£472+ Flights from San Antonio to London Heathrow Airport

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 Monday or Tuesday and return on a Saturday

Cheap flight deals from San Antonio to Heathrow

Enter your travel dates to find the best prices.

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 9 December 2025.

Mon 8/1212:55SAT - LHR

1 stop11h 55mIberia

Mon 15/1219:40LHR - SAT

2 stops30h 27mIberia

Deal found 7/12£593

Mon 8/1212:55SAT - LHR

1 stop11h 55mBritish Airways

Mon 15/1208:20LHR - SAT

1 stop13h 15mBritish Airways

Deal found 7/12£631

Sun 7/1213:49SAT - LHR

1 stop12h 26mIberia

Sun 14/1212:35LHR - SAT

1 stop15h 25mIberia

Deal found 7/12£645

Fri 12/1208:17SAT - LHR

1 stop17h 03mBritish Airways

Tue 23/1211:55LHR - SAT

1 stop14h 46mBritish Airways

Deal found 7/12£659

Sat 27/1219:04SAT - LHR

1 stop33h 11mUnited Airlines

Thu 8/113:25LHR - SAT

2 stops39h 50mUnited Airlines

Deal found 9/12£664

Fri 12/1212:08SAT - LHR

1 stop12h 32mLufthansa

Wed 17/1212:05LHR - SAT

1 stop15h 27mLufthansa

Deal found 8/12£684

Fri 12/1206:25SAT - LHR

1 stop18h 40mDelta

Wed 17/1211:05LHR - SAT

1 stop16h 14mDelta

Deal found 8/12£686

Sun 7/1213:06SAT - LHR

1 stop11h 19mDelta

Sun 14/1211:05LHR - SAT

2 stops18h 12mDelta

Deal found 7/12£690

Fri 12/1207:21SAT - LHR

1 stop17h 59mBritish Airways

Wed 17/1206:15LHR - SAT

2 stops21h 45mBritish Airways

Deal found 8/12£694

Fri 12/1213:50SAT - LHR

2 stops16h 15mIberia

Tue 23/1210:15LHR - SAT

1 stop16h 26mIberia

Deal found 7/12£698

Best flights from San Antonio to Heathrow
Discover carefully curated flight deals from San Antonio to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 December 2025.

Wed 7/112:25SAT - LHR

1 stop13h 25mDelta

Wed 14/108:40LHR - SAT

2 stops20h 15mDelta

Deal found 8/12£472

Thu 15/113:40SAT - LHR

2 stops15h 10mVirgin Atlantic

Thu 22/106:30LHR - SAT

2 stops16h 52mVirgin Atlantic

Deal found 8/12£475

Thu 22/113:40SAT - LHR

2 stops20h 20mScandinavian Airlines

Mon 26/106:40LHR - SAT

3 stops21h 48mScandinavian Airlines

Deal found 6/12£479

Wed 7/112:25SAT - LHR

1 stop12h 25mKLM

Wed 14/110:45LHR - SAT

1 stop15h 58mKLM

Deal found 8/12£492

Wed 11/208:00SAT - LHR

2 stops16h 55mDelta

Wed 18/208:40LHR - SAT

2 stops18h 57mDelta

Deal found 8/12£475

Wed 4/218:19SAT - LHR

1 stop11h 21mKLM

Wed 11/212:30LHR - SAT

1 stop18h 08mKLM

Deal found 7/12£492

Wed 4/208:00SAT - LHR

2 stops18h 45mDelta

Wed 11/211:45LHR - SAT

2 stops18h 53mDelta

Deal found 7/12£475

Thu 22/118:17SAT - LHR

1 stop11h 23mKLM

Mon 26/108:55LHR - SAT

1 stop14h 27mKLM

Deal found 6/12£492

Thu 5/218:17SAT - LHR

1 stop11h 23mKLM

Sun 8/210:45LHR - SAT

1 stop19h 53mKLM

Deal found 6/12£492

Thu 15/112:25SAT - LHR

1 stop12h 25mKLM

Thu 22/112:30LHR - SAT

1 stop13h 55mKLM

Deal found 8/12£492

Wed 21/113:40SAT - LHR

1 stop12h 10mKLM

Wed 28/110:45LHR - SAT

1 stop15h 40mKLM

Deal found 7/12£492

Last-minute flights from San Antonio to Heathrow
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated 9 December 2025 and is based on user searches.

Wed 17/1216:14SAT - LHR

1 stop12h 01mUnited Airlines

Sun 21/1212:05LHR - SAT

1 stop15h 21mUnited Airlines

Deal found 8/12£888

Wed 17/1214:22SAT - LHR

1 stop13h 53mLufthansa

Mon 22/1210:25LHR - SAT

2 stops17h 01mLufthansa

Deal found 8/12£1,046

Wed 17/1207:10SAT - LHR

2 stops20h 10mAir Canada

Mon 22/1213:25LHR - SAT

2 stops27h 15mAir Canada

Deal found 8/12£1,048

Thu 18/1206:40SAT - LHR

1 stop19h 15mUnited Airlines

Sun 21/1212:05LHR - SAT

1 stop13h 36mUnited Airlines

Deal found 8/12£940

Thu 18/1206:25SAT - LHR

1 stop18h 40mDelta

Sun 21/1211:05LHR - SAT

2 stops19h 33mDelta

Deal found 8/12£983

Thu 18/1214:08SAT - LHR

1 stop11h 47mUnited Airlines

Mon 22/1211:35LHR - SAT

1 stop18h 12mUnited Airlines

Deal found 8/12£1,013

Thu 18/1214:13SAT - LHR

2 stops20h 52mMultiple Airlines

Sun 21/1213:00LHR - SAT

2 stops29h 14mMultiple Airlines

Deal found 8/12£1,072

Thu 18/1214:08SAT - LHR

1 stop11h 47mLufthansa

Mon 22/1210:25LHR - SAT

2 stops17h 01mLufthansa

Deal found 8/12£1,171

Fri 19/1214:09SAT - LHR

1 stop11h 21mLufthansa

Sun 21/1212:05LHR - SAT

1 stop15h 21mLufthansa

Deal found 8/12£1,098

Fri 19/1216:39SAT - LHR

1 stop11h 21mMultiple Airlines

Mon 29/1216:30LHR - SAT

1 stop13h 21mMultiple Airlines

Deal found 7/12£1,099

Fri 19/1214:09SAT - LHR

1 stop11h 21mLufthansa

Mon 22/1211:35LHR - SAT

1 stop15h 25mLufthansa

Deal found 8/12£1,140

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 9 December 2025.

Sun 21/1206:00SAT - LHR

1 stop19h 05mVirgin Atlantic

Deal found 7/12£541

Fri 2/115:00SAT - LHR

1 stop15h 15mBritish Airways

Deal found 7/12£551

Sun 21/1214:39SAT - LHR

3 stops34h 31mMultiple Airlines

Deal found 7/12£582

Fri 2/106:00SAT - LHR

1 stop19h 05mDelta

Deal found 8/12£594

Mon 5/113:34SAT - LHR

1 stop14h 51mBritish Airways

Deal found 8/12£662

Mon 5/111:26SAT - LHR

2 stops16h 44mAmerican Airlines

Deal found 8/12£665

Tue 30/1209:32SAT - LHR

1 stop20h 08mAmerican Airlines

Deal found 8/12£692

Thu 1/111:26SAT - LHR

2 stops17h 49mAmerican Airlines

Deal found 8/12£767

Fri 2/111:26SAT - LHR

2 stops16h 44mAmerican Airlines

Deal found 8/12£770

Fri 2/114:13SAT - LHR

2 stops15h 02mLufthansa

Deal found 7/12£771

Thu 1/110:35SAT - LHR

1 stop17h 25mIberia

Deal found 8/12£778

Find flight deals from San Antonio to Heathrow

Round-trip from	£451
Popular in	June
Cheapest in	October
Average price	£996

Scandinavian Airlines
2/3-7/3
4 total stops
49h 27m total
San Antonio to London

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£109 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 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 7/1

12:25-07:50

1 stop13h 25m

London Heathrow

Wed 14/1

08:40-22:55

2 stops20h 15m

£472

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 15/1

13:40-10:50

2 stops15h 10m

London Heathrow

Thu 22/1

06:30-17:22

2 stops16h 52m

£475

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 11/2

08:00-06:55

2 stops16h 55m

London Heathrow

Wed 18/2

08:40-21:37

2 stops18h 57m

£475

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 4/2

08:00-08:45

2 stops18h 45m

London Heathrow

Wed 11/2

11:45-00:38

2 stops18h 53m

£475

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 22/1

13:40-16:00

2 stops20h 20m

London Heathrow

Mon 26/1

06:40-22:28

3 stops21h 48m

£479

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 7/1

12:25-06:50

1 stop12h 25m

London Heathrow

Wed 14/1

10:45-20:43

1 stop15h 58m

£492

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 4/2

18:19-11:40

1 stop11h 21m

London Heathrow

Wed 11/2

12:30-00:38

1 stop18h 08m

£492

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 22/1

18:17-11:40

1 stop11h 23m

London Heathrow

Mon 26/1

08:55-17:22

1 stop14h 27m

£492

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 5/2

18:17-11:40

1 stop11h 23m

London Heathrow

Sun 8/2

10:45-00:38

1 stop19h 53m

£492

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 15/1

12:25-06:50

1 stop12h 25m

London Heathrow

Thu 22/1

12:30-20:25

1 stop13h 55m

£492

Flights are sorted by cheapest return flights first.

Deals found on 7/12

Showing 1-10 of 21 results

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 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 San Antonio to London Heathrow Airport

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

The price you pay for your flight from San Antonio to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 29 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 £395). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £627). 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 midday, which can drop the price by up to 10% versus a flight in the evening.

Related info for your journey

What airport do you fly from for flights from San Antonio to London Heathrow?
San Antonio (SAT), located 7.6 mi from the city center, is the airport you fly out of when you book flights from San Antonio to London Heathrow. 0 airlines have flights from San Antonio to London Heathrow on a regular basis. Booking flights from San Antonio to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.
How long is the flight from San Antonio to London Heathrow Airport?
A quick flight from San Antonio to London Heathrow Airport can take about 13h 25m. Delta provides one of the quickest options available for as low as £472. The distance from San Antonio to London Heathrow Airport is about 4967 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
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 holiday 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 £395). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £627). 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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Why should you use Cheapflights to find cheap flight tickets from San Antonio to Heathrow?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Antonio to Heathrow for you. Better yet — we are completely free to use.

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Yes! Cheapflights helps users easily find flights from San Antonio to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from San Antonio to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on San Antonio to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from San Antonio to London Heathrow Airport from £472

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel.

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 Monday or Tuesday and return on a Saturday

Cheap 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 9 December 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 9 December 2025.

Find flight deals from San Antonio to Heathrow

Round-trip 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.

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?

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?

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?

Travelling to a place near London Heathrow Airport?

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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.

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How does Cheapflights help users find flights from San Antonio to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from San Antonio to Heathrow?

Can Cheapflights find flights from San Antonio to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from San Antonio to Heathrow become cheaper?

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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 9 December 2025.