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

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

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

United Airlines, Lufthansa, and British Airways are the most popular carriers operating from San Antonio to London

What airlines fly to London?

British Airways, American Airlines and Iberia are the top three most popular airlines that fly to London from San Antonio according to our data. British Airways is the first choice among our users, with 64% of people opting to fly with this airline when traveling to London. Keep in mind that there are 8 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

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

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

Dallas (DFW) was the most common stop: 70% of momondo users choosing 1-stop flights on this route connected there.

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

Flights connecting via Houston (IAH) have the shortest average one-way travel time: 11h 16m.

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

As of March 2026, there are 6 operators available to choose from for flights from San Antonio Airport to London.

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 required travel and health documents for your London 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$257 Cheap Flights from San Antonio to London in 2026

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 $658 to $899. The lowest price recently found on this route was $649.

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Find the cheapest flights from San Antonio to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:15 pm - 9:20 am

SAT

LHR

39h 05m

2 stops

6:40 am - 11:18 pm

LHR

SAT

22h 38m

2 stops

$649Scandinavian Airlines

Fri, Sep 4 - Mon, Sep 7

12:15 pm - 9:20 am

SAT

LHR

39h 05m

2 stops

6:40 am - 11:18 pm

LHR

SAT

22h 38m

2 stops

$674Scandinavian Airlines

Fri, Sep 4 - Mon, Sep 7

1:22 pm - 10:00 am

SAT

LGW

14h 38m

1 stop

2:00 pm - 12:27 pm

LGW

SAT

28h 27m

1 stop

$717Multiple Airlines

Wed, Apr 1 - Mon, Apr 6

1:40 pm - 9:00 am

SAT

LHR

13h 20m

1 stop

9:30 am - 11:49 pm

LHR

SAT

20h 19m

2 stops

$735United Airlines

Sun, Aug 23 - Thu, Aug 27

5:20 am - 11:40 am

SAT

LCY

24h 20m

2 stops

10:00 am - 12:44 am

LCY

SAT

20h 44m

2 stops

$917Delta

Fri, May 1 - Thu, May 14

5:20 am - 11:40 am

SAT

LCY

24h 20m

2 stops

1:45 pm - 8:28 pm

LCY

SAT

36h 43m

2 stops

$967Delta

Fri, May 1 - Sun, May 10

10:00 am - 8:35 am

SAT

LCY

16h 35m

2 stops

9:50 am - 10:00 pm

LCY

SAT

42h 10m

2 stops

$984British Airways

Wed, Jul 22 - Fri, Aug 21

3:11 pm - 3:15 pm

SAT

LCY

18h 04m

2 stops

9:50 am - 7:46 pm

LCY

SAT

39h 56m

2 stops

$1,010British Airways

Tue, May 12 - Thu, Aug 20

6:26 am - 3:15 pm

SAT

LCY

26h 49m

2 stops

7:15 pm - 7:41 pm

LCY

SAT

30h 26m

2 stops

$1,013Iberia

Mon, May 11 - Tue, Nov 3

1:19 pm - 6:30 pm

SAT

LCY

23h 11m

2 stops

9:50 am - 10:52 pm

LCY

SAT

19h 02m

2 stops

$1,020Iberia

Sat, May 2 - Tue, May 12

Iberia flights from San Antonio to London

Our best Iberia deals on San Antonio to London flight tickets

Iberia

Apr 20

SAT1:19 pmSan Antonio

12h 21m

1 stop

LHR7:40 amLondon Heathrow

Apr 26

LHR8:55 amLondon Heathrow

16h 49m

1 stop

SAT7:44 pmSan Antonio

$743

Iberia

Jul 28

SAT7:08 pmSan Antonio

13h 17m

1 stop

LHR2:25 pmLondon Heathrow

Oct 13

LHR2:25 pmLondon Heathrow

12h 52m

1 stop

SAT9:17 pmSan Antonio

$753

Iberia

Jul 22

SAT5:40 pmSan Antonio

17h 35m

2 stops

LHR5:15 pmLondon Heathrow

Aug 21

LHR2:25 pmLondon Heathrow

15h 15m

1 stop

SAT11:40 pmSan Antonio

$760

British Airways flights from San Antonio to London

Our best British Airways deals on San Antonio to London flight tickets

British Airways

Jul 22

SAT5:35 pmSan Antonio

14h 50m

1 stop

LHR2:25 pmLondon Heathrow

Aug 21

LHR2:25 pmLondon Heathrow

15h 15m

1 stop

SAT11:40 pmSan Antonio

$747

British Airways

Aug 19

SAT2:15 pmSan Antonio

14h 40m

1 stop

LHR10:55 amLondon Heathrow

Aug 31

LHR6:10 pmLondon Heathrow

29h 30m

2 stops

SAT5:40 pmSan Antonio

$791

British Airways

Aug 19

SAT1:22 pmSan Antonio

11h 28m

1 stop

LHR6:50 amLondon Heathrow

Aug 31

LHR10:05 amLondon Heathrow

12h 25m

1 stop

SAT4:30 pmSan Antonio

$797

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 9/4

12:15 pm-9:20 am

2 stops39h 05m

London Heathrow

Mon 9/7

6:40 am-11:18 pm

2 stops22h 38m

$649

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 9/4

12:15 pm-9:20 am

2 stops39h 05m

London Heathrow

Mon 9/7

6:40 am-11:18 pm

2 stops22h 38m

$674

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Wed 4/1

1:22 pm-10:00 am

1 stop14h 38m

London Gatwick

Mon 4/6

2:00 pm-12:27 pm

1 stop28h 27m

$717

Quickest round-trip

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 8/23

1:40 pm-9:00 am

1 stop13h 20m

London Heathrow

Thu 8/27

9:30 am-11:49 pm

2 stops20h 19m

$735

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Fri 5/1

5:20 am-11:40 am

2 stops24h 20m

London City

Thu 5/14

10:00 am-12:44 am

2 stops20h 44m

$917

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Fri 5/1

5:20 am-11:40 am

2 stops24h 20m

London City

Sun 5/10

1:45 pm-8:28 pm

2 stops36h 43m

$967

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Wed 7/22

10:00 am-8:35 am

2 stops16h 35m

London City

Fri 8/21

9:50 am-10:00 pm

2 stops42h 10m

$984

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Tue 5/12

3:11 pm-3:15 pm

2 stops18h 04m

London City

Thu 8/20

9:50 am-7:46 pm

2 stops39h 56m

$1,010

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Mon 5/11

6:26 am-3:15 pm

2 stops26h 49m

London City

Tue 11/3

7:15 pm-7:41 pm

2 stops30h 26m

$1,013

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Sat 5/2

1:19 pm-6:30 pm

2 stops23h 11m

London City

Tue 5/12

9:50 am-10:52 pm

2 stops19h 02m

$1,020

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

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?

What is the cheapest month to fly to London?

The cheapest month to fly to London from San Antonio is in February. Flight prices, which tend to average around $637, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from San Antonio averaging around $701.

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 $861 when searching weeks out. 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 $629 on momondo.

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

You could potentially save up to 42% on your flight if you consider stops on a San Antonio to London flight.

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

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 round-trip 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

Fastest flight time	11h 38m
Direct flights	None

The fastest flight from San Antonio to London takes 11h 38m

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

Search flight deals

How far is San Antonio to London by plane?
London is 4985.7 mi away from San Antonio. In terms of flight time, this usually takes a little over 11h 38m.
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 many operators does momondo search for flights from San Antonio Airport to London?
As of March 2026, there are 6 operators available to choose from for flights from San Antonio Airport to London.
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 required travel and health documents for your London 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. 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?
Based on momondo bookings for flights between San Antonio and London, the leading airline is British Airways, making up 53% of the total bookings. Other popular airlines include United Airlines with 15%, Iberia with 11%, and American Airlines with 7%.

Best airlines flying from San Antonio to London

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $530	Free Cancellation	Rating 7.9 8,284 reviews	Search Delta flights
United Airlines	PriceFrom $531	Free Cancellation	Rating 7.4 9,421 reviews	Search United Airlines flights
British Airways	PriceFrom $563	Free Cancellation	Rating 6.7 7,784 reviews	Search British Airways flights
American Airlines	PriceFrom $571	Free Cancellation	Rating 7.1 11,439 reviews	Search American Airlines flights
Virgin Atlantic	PriceFrom $600	Free Cancellation	Rating 7.5 680 reviews	Search Virgin Atlantic flights
Iberia	PriceFrom $668	Free Cancellation	Rating 7.0 3,133 reviews	Search Iberia flights

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Crawley

Hayes

Wembley

Dartford

Croydon

Brentwood

Harrow

Watford

Guildford

Stansted

Cobham

Folkestone

Romford

Richmond

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?

All flight searches from San Antonio to London on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from San Antonio.

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 simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from San Antonio and alert you when they change.

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Cheap flights from San Antonio to London from $292

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 4/16. 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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Iberia flights from San Antonio to London

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

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

What is the cheapest month to fly to London?

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

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

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

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

What airlines fly to London?

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

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

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

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

When to book flights from San Antonio to London

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

Fastest flight time

Direct flights

Best airlines flying from San Antonio to London

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

Traveling to a place near London?

Why use momondo?

An easier way to manage your London 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 the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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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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