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

United Airlines, Air Canada, and Delta are the most popular carriers operating from San Antonio to London

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

Prices for flights from San Antonio Airport to London refresh daily.

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

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.

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

The necessary travel and health documents for your London 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.

£141 Cheap Flights from San Antonio to London in 2025

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

Prices are currently low for flights on this route. Typical prices usually range from £482 to £680. The lowest price recently found on this route was £382.

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Find the cheapest flights from San Antonio to London

Round-trip

One-way

Last minute

Cheap return flights

14:15 - 07:30SAT-LHR

11h 15m1 stop

13:25 - 15:38LHR-SAT

32h 13m2 stops

£382United Airlines

Find Deal

Tue, 6 Jan - Tue, 13 Jan

16:22 - 11:35SAT-LHR

13h 13m1 stop

14:05 - 15:30LHR-SAT

31h 25m2 stops

£383United Airlines

Find Deal

Wed, 3 Sep - Tue, 23 Sep

18:09 - 12:00SAT-LHR

11h 51m1 stop

16:30 - 23:48LHR-SAT

13h 18m1 stop

£384British Airways

Find Deal

Tue, 6 Jan - Tue, 13 Jan

18:49 - 14:25SAT-LHR

13h 36m1 stop

11:30 - 23:00LHR-SAT

17h 30m2 stops

£385Iberia

Find Deal

Wed, 24 Sep - Wed, 1 Oct

12:44 - 06:25SAT-LHR

11h 41m1 stop

10:30 - 18:37LHR-SAT

14h 07m1 stop

£385British Airways

Find Deal

Wed, 1 Oct - Wed, 8 Oct

05:30 - 11:50SAT-LHR

24h 20m2 stops

17:40 - 13:15LHR-SAT

25h 35m2 stops

£393Air Canada

Find Deal

Sun, 14 Sep - Fri, 26 Sep

18:36 - 14:25SAT-LHR

13h 49m1 stop

12:00 - 22:13LHR-SAT

16h 13m1 stop

£400Iberia

Find Deal

Sun, 14 Sep - Wed, 24 Sep

12:55 - 10:00SAT-LHR

15h 05m2 stops

09:30 - 22:59LHR-SAT

19h 29m2 stops

£402Air Canada

Find Deal

Mon, 11 Aug - Mon, 25 Aug

11:33 - 10:00SAT-LGW

16h 27m1 stop

12:00 - 23:57LGW-SAT

17h 57m2 stops

£697Virgin Atlantic

Find Deal

Fri, 29 Aug - Fri, 5 Sep

11:33 - 10:00SAT-LGW

16h 27m1 stop

12:00 - 23:57LGW-SAT

17h 57m2 stops

£714Virgin Atlantic

Find Deal

Fri, 15 Aug - Thu, 4 Sep

Air Canada flights from San Antonio to London

Our best Air Canada deals on San Antonio to London flight tickets

Air Canada

14 Sept

SAT05:30San Antonio

24h 20m

2 stops

LHR11:50London Heathrow

26 Sept

LHR17:40London Heathrow

25h 35m

2 stops

SAT13:15San Antonio

£393

Find similar

Air Canada

11 Aug

SAT12:55San Antonio

15h 05m

2 stops

LHR10:00London Heathrow

25 Aug

LHR09:30London Heathrow

19h 29m

2 stops

SAT22:59San Antonio

£402

Find similar

Air Canada

1 Oct

SAT05:30San Antonio

19h 00m

2 stops

LHR06:30London Heathrow

8 Oct

LHR08:30London Heathrow

20h 25m

2 stops

SAT22:55San Antonio

£405

Find similar

United Airlines flights from San Antonio to London

Our best United Airlines deals on San Antonio to London flight tickets

United Airlines

6 Jan

SAT14:15San Antonio

11h 15m

1 stop

LHR07:30London Heathrow

13 Jan

LHR13:25London Heathrow

32h 13m

2 stops

SAT15:38San Antonio

£382

Find similar

United Airlines

3 Sept

SAT16:22San Antonio

13h 13m

1 stop

LHR11:35London Heathrow

23 Sept

LHR14:05London Heathrow

31h 25m

2 stops

SAT15:30San Antonio

£383

Find similar

United Airlines

2 Sept

SAT09:50San Antonio

15h 50m

1 stop

LHR07:40London Heathrow

16 Sept

LHR07:25London Heathrow

19h 08m

2 stops

SAT20:33San Antonio

£388

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 6/1

14:15-07:30

1 stop11h 15m

London Heathrow

Tue 13/1

13:25-15:38

2 stops32h 13m

£382

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/9

16:22-11:35

1 stop13h 13m

London Heathrow

Tue 23/9

14:05-15:30

2 stops31h 25m

£383

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 6/1

18:09-12:00

1 stop11h 51m

London Heathrow

Tue 13/1

16:30-23:48

1 stop13h 18m

£384

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 24/9

18:49-14:25

1 stop13h 36m

London Heathrow

Wed 1/10

11:30-23:00

2 stops17h 30m

£385

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 1/10

12:44-06:25

1 stop11h 41m

London Heathrow

Wed 8/10

10:30-18:37

1 stop14h 07m

£385

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 14/9

05:30-11:50

2 stops24h 20m

London Heathrow

Fri 26/9

17:40-13:15

2 stops25h 35m

£393

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 14/9

18:36-14:25

1 stop13h 49m

London Heathrow

Wed 24/9

12:00-22:13

1 stop16h 13m

£400

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 11/8

12:55-10:00

2 stops15h 05m

London Heathrow

Mon 25/8

09:30-22:59

2 stops19h 29m

£402

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Fri 29/8

11:33-10:00

1 stop16h 27m

London Gatwick

Fri 5/9

12:00-23:57

2 stops17h 57m

£697

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Fri 15/8

11:33-10:00

1 stop16h 27m

London Gatwick

Thu 4/9

12:00-23:57

2 stops17h 57m

£714

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

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

What is the cheapest month to fly to London?

The cheapest month to fly to London from San Antonio is in August. Flight prices, which tend to average around £559, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from San Antonio averaging around £561.

What is the cheapest day to depart on your flight to London?

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £571. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to London for around £647.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £577. Flights at midday are often more expensive, with an average ticket price of £606.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £741 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from San Antonio for as low as £621 on momondo.

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

As of August 2025, prices for San Antonio to London flights are approximately 25% cheaper when compared to flights at the same time last year.

When to book flights from San Antonio to London

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

Estimated return price

Cheap San Antonio to London (SAT to LON) flight deals and tips

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

Best price found	£141
Fastest flight time	11h 15m
Direct flights	None
Airports in London	5 airports

The best one-way flight to London from San Antonio in the past 72 hours is £141. The best return flight deal from San Antonio to London found on momondo in the last 72 hours is £382.

The fastest flight from San Antonio to London takes 11h 15m

There are no direct flights from San Antonio to London. Popular non-direct routes for this connection are San Antonio Airport - London Gatwick Airport, San Antonio Airport - London Heathrow Airport and San Antonio Airport - London Stansted Airport.

There are 5 airports near London: London City (LCY), London Heathrow (LHR), London Stansted (STN), London Gatwick (LGW), London Southend (SEN)

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How far is San Antonio to London by plane?
There are 4985.7 mi between San Antonio and London. Typically, this will take 11h 15m by plane in normal conditions.
When did momondo last update prices for flights from San Antonio Airport to London?
Prices for flights from San Antonio Airport to London refresh daily.
How old do you have to be to fly from San Antonio Airport to London?
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.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London 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.
What is the most popular airline from San Antonio to London?
Based on momondo bookings for flights between San Antonio and London, the leading airline is Virgin Atlantic, making up 100% of the total bookings.

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Why use momondo?

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

It is quick and easy to find San Antonio to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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?

Once all potential San Antonio to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of San Antonio to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.