How long is the flight from San Antonio to London?

There are many flights that can get you from San Antonio to London in 19h 05m. Fly via United Airlines or Delta to get the fastest option. San Antonio and London are separated by a distance of 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 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 when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, 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 are the most popular routes from San Antonio to London?

The most popular flight routes from San Antonio to London are San Antonio - London Heathrow, San Antonio - London Gatwick and San Antonio - London Stansted.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Antonio to London as you normally would.

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

Most people fly from San Antonio (SAT) if they book a flight from San Antonio to London. On average, San Antonio has 0 outbound flights to London per day from 0 airlines. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.

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

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

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

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

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

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

£244+ Cheap Flights from San Antonio to London

Cheap flight deals from San Antonio to London

Enter your travel dates to find the best prices.

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Best

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Cheapest flights from San Antonio to London
Explore the most affordable flight options available from San Antonio to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Sun 29/1112:58 -

1 stop13h 17m

Tue 15/1207:30 -

2 stops19h 29m

Deal found 28/10£684

Wed 2/1207:33 -

1 stop19h 02m

Wed 9/1219:40 -

2 stops18h 50m

Deal found 26/10£687

Wed 25/1107:20 -

1 stop21h 55m

Wed 2/1213:45 -

2 stops39h 07m

Deal found 27/10£688

Wed 30/1207:27 -

1 stop20h 33m

Thu 14/107:30 -

2 stops20h 29m

Deal found 26/10£689

Wed 30/1206:00 -

1 stop19h 05m

Wed 13/110:00 -

2 stops20h 45m

Deal found 29/10£690

Wed 30/1207:00 -

1 stop17h 25m

Thu 14/106:30 -

2 stops21h 03m

Deal found 26/10£691

Wed 30/1209:26 -

2 stops17h 04m

Thu 14/107:40 -

2 stops19h 05m

Deal found 26/10£693

Wed 9/1213:45 -

1 stop12h 05m

Wed 16/1211:30 -

2 stops19h 05m

Deal found 27/10£695

Wed 9/1209:41 -

2 stops15h 29m

Wed 16/1206:30 -

2 stops20h 56m

Deal found 25/10£696

Find flight deals from San Antonio to London

Round-trip from	£559
One-way from	£244
Popular in	June
Cheapest in	February
Average price	£766

United Airlines
23/1-26/1
4 total stops
75h 51m total
San Antonio to London

Search Deals

British Airways
18/4-31/12
1 total stop
16h 28m total
San Antonio to London

Search Deals

Highest demand for flights based on searches. 21% potential increase in price (£154 potential increase over avg. return price).

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Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 18/4

08:27-06:55

1 stop16h 28m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£244

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 25/4

16:00-13:15

2 stops15h 15m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£252

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 4/4

16:45-12:35

1 stop13h 50m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£252

Fastest return journey

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 25/4

18:15-13:15

1 stop13h 00m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£252

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 18/4

16:00-13:15

2 stops15h 15m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£252

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Tue 6/4

06:40-07:15

2 stops18h 35m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£252

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 4/4

08:00-06:20

2 stops16h 20m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£252

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Wed 18/11

14:56-17:50

2 stops20h 54m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£333

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Wed 25/11

05:30-13:30

2 stops26h 00m

London Heathrow

Wed 2/12

13:45-22:52

2 stops39h 07m

£688

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Wed 30/12

06:00-07:05

1 stop19h 05m

London Heathrow

Wed 13/1

10:00-00:45

2 stops20h 45m

£690

Flights are sorted by cheapest return flights first.

Deals found on 25/10

Showing 1-10 of 17 resultsSorted by cheapest first

Best time to book a flight from San Antonio to London

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

SAT-LON

SAT-LHR

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

SAT-LON

SAT-LHR

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

Currently, February is the cheapest month in which you can book a flight from San Antonio to London (average of £510). Flying from San Antonio to London in June is currently the most expensive (average of £1,039). 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.

How much does it cost for a return flight from San Antonio to London?

Airfare is typical for this route at the moment.

San Antonio to London flights typically cost between £543 and £699 in January.
The cheapest return price found within the last 5 days was £559 on United Airlines (23 Jan–26 Jan).

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

Houston (IAH) – chosen by Cheapflights users on 50% of one-stop itineraries from San Antonio to London on Cheapflights.

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

Atlanta (ATL) is the most affordable one-stop option, with an average return flight price of £469.

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

Flights via Atlanta (ATL) have the shortest average one-way travel time for one-stop routes: 10h 45m.

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

Flights via Atlanta (ATL) offer the fastest connection on this route, with an average stopover time of 1h 04m.

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

The best time to book flights from San Antonio to London is 63 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

What airport do you fly from for flights from San Antonio to London?
Most people fly from San Antonio (SAT) if they book a flight from San Antonio to London. On average, San Antonio has 0 outbound flights to London per day from 0 airlines. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.
How long is the flight from San Antonio to London?
There are many flights that can get you from San Antonio to London in 19h 05m. Fly via United Airlines or Delta to get the fastest option. San Antonio and London are separated by a distance of 4967 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most popular routes from San Antonio to London?
The most popular flight routes from San Antonio to London are San Antonio - London Heathrow, San Antonio - London Gatwick and San Antonio - London Stansted.
Can I find deals for flights from San Antonio to London that include hotel bookings?
Yes. In addition to deals on San Antonio to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Antonio to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to London.
Can I find deals for business class flights from San Antonio to London?
Yes. Cheapflights offers flight deals from San Antonio to London 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?
Currently, February is the cheapest month in which you can book a flight from San Antonio to London (average of £510). Flying from San Antonio to London in June is currently the most expensive (average of £1,039). 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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How does Cheapflights help users find flights from San Antonio to London?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from San Antonio today with Cheapflights!

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from San Antonio to London.

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

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

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

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Cheap flights from San Antonio to London from £244

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from San Antonio to London

Cheapest flights from San Antonio to LondonExplore the most affordable flight options available from San Antonio to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Explore the most affordable flight options available from San Antonio to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from San Antonio to LondonDiscover carefully curated flight deals from San Antonio to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from San Antonio to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Last-minute flights from San Antonio to LondonDiscover last-minute flight deals from San Antonio to London. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from San Antonio to London. Data last updated 30 October 2026 and is based on user searches.

One-way flights from San Antonio to LondonSearch for one-way flight options from San Antonio to London. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Search for one-way flight options from San Antonio to London. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

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

Best time to book a flight from San Antonio to London

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

Cheapflights Insights

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

How much does it cost for a return flight from San Antonio to London?

Airfare is typical for this route at the moment.

San Antonio to London flights typically cost between £543 and £699 in January.The cheapest return price found within the last 5 days was £559 on United Airlines (23 Jan–26 Jan).

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

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

Houston (IAH) – chosen by Cheapflights users on 50% of one-stop itineraries from San Antonio to London on Cheapflights.

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

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

Atlanta (ATL) is the most affordable one-stop option, with an average return flight price of £469.

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

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

Flights via Atlanta (ATL) have the shortest average one-way travel time for one-stop routes: 10h 45m.

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

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

Flights via Atlanta (ATL) offer the fastest connection on this route, with an average stopover time of 1h 04m.

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

The best time to book flights from San Antonio to London is 63 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

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

How long is the flight from San Antonio to London?

What are the most popular routes from San Antonio to London?

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

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

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

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

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Other flights to London

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

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

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

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

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Cheapest flights from San Antonio to London
Explore the most affordable flight options available from San Antonio to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from San Antonio to London
Discover carefully curated flight deals from San Antonio to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Last-minute flights from San Antonio to London
Discover last-minute flight deals from San Antonio to London. Data last updated 30 October 2026 and is based on user searches.

One-way flights from San Antonio to London
Search for one-way flight options from San Antonio to London. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

San Antonio to London flights typically cost between £543 and £699 in January.
The cheapest return price found within the last 5 days was £559 on United Airlines (23 Jan–26 Jan).