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Cheap flights from San Antonio to London from $248

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 12/15. 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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Find the cheapest flights from San Antonio to London

Cheap round-trip flights

Iberia Logo
6:40 pm - 10:50 amSAT-LHR
34h 10m1 stop
Iberia Logo
11:25 am - 8:24 amLHR-SAT
26h 59m2 stops
$510Iberia
Find Deal
sáb., oct. 18 - mié., nov. 12
Iberia Logo
12:44 pm - 9:00 amSAT-LHR
14h 16m1 stop
Iberia Logo
11:30 am - 11:00 pmLHR-SAT
17h 30m2 stops
$511Iberia
Find Deal
mié., sep. 10 - mié., sep. 24
Iberia Logo
12:44 pm - 9:00 amSAT-LHR
14h 16m1 stop
Iberia Logo
12:00 pm - 7:45 pmLHR-SAT
13h 45m1 stop
$517Iberia
Find Deal
dom., sep. 7 - jue., sep. 25
Delta Logo
6:25 am - 7:05 amSAT-LHR
18h 40m1 stop
Delta Logo
6:20 am - 5:16 pmLHR-SAT
16h 56m2 stops
$523Delta
Find Deal
mar., nov. 4 - jue., nov. 20
Delta Logo
11:35 am - 9:15 amSAT-LHR
15h 40m1 stop
Delta Logo
9:00 am - 8:28 pmLHR-SAT
17h 28m2 stops
$524Delta
Find Deal
mar., sep. 30 - mié., oct. 15
British Airways Logo
5:16 pm - 12:45 pmSAT-LHR
13h 29m1 stop
British Airways Logo
2:10 pm - 9:57 pmLHR-SAT
13h 47m1 stop
$525British Airways
Find Deal
mié., sep. 10 - mié., nov. 19
British Airways Logo
1:00 pm - 6:50 amSAT-LHR
11h 50m1 stop
British Airways Logo
8:20 am - 3:47 pmLHR-SAT
13h 27m1 stop
$526British Airways
Find Deal
mar., sep. 30 - mar., oct. 7
American Airlines Logo
5:16 pm - 12:45 pmSAT-LHR
13h 29m1 stop
American Airlines Logo
2:10 pm - 9:57 pmLHR-SAT
13h 47m1 stop
$534American Airlines
Find Deal
mié., sep. 10 - mié., nov. 19
American Airlines Logo
7:00 am - 6:35 amSAT-LGW
17h 35m2 stops
American Airlines Logo
12:20 pm - 10:13 pmLGW-SAT
15h 53m2 stops
$593American Airlines
Find Deal
sáb., sep. 27 - sáb., oct. 4
Virgin Atlantic Logo
10:45 am - 6:20 amSAT-LHR
13h 35m2 stops
Virgin Atlantic Logo
6:30 am - 5:15 pmLHR-SAT
16h 45m2 stops
$639Virgin Atlantic
Find Deal
mié., sep. 10 - mié., nov. 19

Iberia flights from San Antonio to London

Our best Iberia deals on San Antonio to London flight tickets
Iberia
Oct 18
SAT6:40 pmSan Antonio
34h 10m
1 stop
LHR10:50 amLondon Heathrow
Nov 12
LHR11:25 amLondon Heathrow
26h 59m
2 stops
SAT8:24 amSan Antonio
$510
Find similar
Iberia
Sep 10
SAT12:44 pmSan Antonio
14h 16m
1 stop
LHR9:00 amLondon Heathrow
Sep 24
LHR11:30 amLondon Heathrow
17h 30m
2 stops
SAT11:00 pmSan Antonio
$511
Find similar
Iberia
Sep 7
SAT12:44 pmSan Antonio
14h 16m
1 stop
LHR9:00 amLondon Heathrow
Sep 25
LHR12:00 pmLondon Heathrow
13h 45m
1 stop
SAT7:45 pmSan Antonio
$517
Find similar

British Airways flights from San Antonio to London

Our best British Airways deals on San Antonio to London flight tickets
British Airways
Sep 10
SAT5:16 pmSan Antonio
13h 29m
1 stop
LHR12:45 pmLondon Heathrow
Nov 19
LHR2:10 pmLondon Heathrow
13h 47m
1 stop
SAT9:57 pmSan Antonio
$525
Find similar
British Airways
Sep 30
SAT1:00 pmSan Antonio
11h 50m
1 stop
LHR6:50 amLondon Heathrow
Oct 7
LHR8:20 amLondon Heathrow
13h 27m
1 stop
SAT3:47 pmSan Antonio
$526
Find similar
British Airways
Oct 26
SAT6:39 pmSan Antonio
12h 01m
1 stop
LHR11:40 amLondon Heathrow
Nov 5
LHR10:15 amLondon Heathrow
13h 47m
1 stop
SAT6:02 pmSan Antonio
$527
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated agosto 21, 2025.
Use the filters below to find and compare flights from San Antonio to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

sáb. 10/18

6:40 pm-10:50 am

1 stop34h 10m

London Heathrow

mié. 11/12

11:25 am-8:24 am

2 stops26h 59m

$510

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

mié. 9/10

12:44 pm-9:00 am

1 stop14h 16m

London Heathrow

mié. 9/24

11:30 am-11:00 pm

2 stops17h 30m

$511

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

dom. 9/7

12:44 pm-9:00 am

1 stop14h 16m

London Heathrow

jue. 9/25

12:00 pm-7:45 pm

1 stop13h 45m

$517

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

mar. 11/4

6:25 am-7:05 am

1 stop18h 40m

London Heathrow

jue. 11/20

6:20 am-5:16 pm

2 stops16h 56m

$523

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

mar. 9/30

11:35 am-9:15 am

1 stop15h 40m

London Heathrow

mié. 10/15

9:00 am-8:28 pm

2 stops17h 28m

$524

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

mié. 9/10

5:16 pm-12:45 pm

1 stop13h 29m

London Heathrow

mié. 11/19

2:10 pm-9:57 pm

1 stop13h 47m

$525

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

mar. 9/30

1:00 pm-6:50 am

1 stop11h 50m

London Heathrow

mar. 10/7

8:20 am-3:47 pm

1 stop13h 27m

$526

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

mié. 9/10

5:16 pm-12:45 pm

1 stop13h 29m

London Heathrow

mié. 11/19

2:10 pm-9:57 pm

1 stop13h 47m

$534

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

sáb. 9/27

7:00 am-6:35 am

2 stops17h 35m

London Gatwick

sáb. 10/4

12:20 pm-10:13 pm

2 stops15h 53m

$593

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

mié. 9/10

10:45 am-6:20 am

2 stops13h 35m

London Heathrow

mié. 11/19

6:30 am-5:15 pm

2 stops16h 45m

$639

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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

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 $724, 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 $743.

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

The cheapest day to depart from San Antonio to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $835. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,031. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from San Antonio in the evening is the least expensive time of day to depart. momondo users have found prices as low as $861 when looking at flights departing in the evening. Flights to London are more costly in the morning, with an average ticket price of $1,021. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $981 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 $771 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 22% 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 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

Direct flights

None
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 23m.

  • 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?

  • 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?

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
British AirwaysPriceFrom $570Free CancellationRating
6.7
7,291 reviews
Search British Airways flights
American AirlinesPriceFrom $611Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $649Free CancellationRating
7.9
7,981 reviews
Search Delta flights
IberiaPriceFrom $672Free CancellationRating
7.0
2,884 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $688Free CancellationRating
7.4
658 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom $698Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Luton
Dover
Slough
Milton Keynes
Guildford
Dartford
Crawley
Hayes
Chelmsford
Stansted
Brentwood
Ilford
Folkestone
Colchester
Watford
Richmond
Canterbury
Croydon

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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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
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport