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Cheap flights from San Antonio to London from $296

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 12/1. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
11:50 am - 8:45 amSAT-LHR
14h 55m1 stop
Delta Logo
11:30 am - 12:34 amLHR-SAT
19h 04m2 stops
$591Delta
Find Deal
Wed, Nov 26 - Thu, Dec 4
Delta Logo
12:10 pm - 6:55 amSAT-LHR
12h 45m1 stop
Delta Logo
8:55 am - 9:03 pmLHR-SAT
18h 08m2 stops
$592Delta
Find Deal
Wed, Nov 19 - Wed, Dec 3
Scandinavian Airlines Logo
4:10 pm - 5:40 pmSAT-LHR
19h 30m2 stops
Scandinavian Airlines Logo
10:20 am - 11:17 pmLHR-SAT
18h 57m2 stops
$601Scandinavian Airlines
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Thu, Feb 26 - Tue, Mar 3
Virgin Atlantic Logo
10:57 am - 6:55 amSAT-LHR
13h 58m2 stops
Virgin Atlantic Logo
11:45 am - 10:19 pmLHR-SAT
16h 34m2 stops
$605Virgin Atlantic
Find Deal
Wed, Feb 11 - Wed, Feb 25
Virgin Atlantic Logo
1:15 pm - 6:25 amSAT-LHR
11h 10m1 stop
Virgin Atlantic Logo
9:40 am - 10:32 pmLHR-SAT
17h 52m2 stops
$612Virgin Atlantic
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Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
7:00 am - 7:55 amSAT-LHR
18h 55m1 stop
United Airlines Logo
6:35 am - 8:41 amLHR-SAT
32h 06m2 stops
$619United Airlines
Find Deal
Mon, Dec 1 - Thu, Dec 11
Scandinavian Airlines Logo
12:10 pm - 5:40 pmSAT-LHR
23h 30m2 stops
Scandinavian Airlines Logo
6:40 am - 10:21 pmLHR-SAT
21h 41m2 stops
$625Scandinavian Airlines
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Thu, Apr 9 - Thu, May 7
United Airlines Logo
9:00 am - 7:10 amSAT-LHR
16h 10m2 stops
United Airlines Logo
6:35 am - 8:53 pmLHR-SAT
20h 18m2 stops
$627United Airlines
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Wed, Feb 11 - Wed, Feb 18
Iberia Logo
12:55 pm - 8:35 amSAT-LHR
13h 40m1 stop
Iberia Logo
11:55 am - 7:41 pmLHR-SAT
13h 46m1 stop
$643Iberia
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Wed, Nov 19 - Wed, Nov 26
Iberia Logo
1:08 pm - 6:50 amSAT-LHR
11h 42m1 stop
Iberia Logo
3:00 pm - 9:56 pmLHR-SAT
12h 56m1 stop
$651Iberia
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Wed, Feb 11 - Wed, Feb 18

Scandinavian Airlines flights from San Antonio to London Heathrow Airport

Our best Scandinavian Airlines deals on San Antonio to London Heathrow Airport flight tickets
Scandinavian Airlines
Feb 26
SAT4:10 pmSan Antonio
19h 30m
2 stops
LHR5:40 pmLondon Heathrow
Mar 3
LHR10:20 amLondon Heathrow
18h 57m
2 stops
SAT11:17 pmSan Antonio
$601
Find similar
Scandinavian Airlines
Apr 9
SAT12:10 pmSan Antonio
23h 30m
2 stops
LHR5:40 pmLondon Heathrow
May 7
LHR6:40 amLondon Heathrow
21h 41m
2 stops
SAT10:21 pmSan Antonio
$625
Find similar
Scandinavian Airlines
Nov 8
SAT12:23 pmSan Antonio
27h 17m
2 stops
LHR9:40 pmLondon Heathrow
Nov 23
LHR6:40 amLondon Heathrow
23h 58m
3 stops
SAT12:38 amSan Antonio
$2,180
Find similar

Virgin Atlantic flights from San Antonio to London Heathrow Airport

Our best Virgin Atlantic deals on San Antonio to London Heathrow Airport flight tickets
Virgin Atlantic
Nov 3
SAT6:25 amSan Antonio
18h 40m
1 stop
LHR7:05 amLondon Heathrow
Nov 18
LHR10:45 amLondon Heathrow
13h 31m
1 stop
SAT6:16 pmSan Antonio
$571
Find similar
Virgin Atlantic
Nov 3
SAT6:25 amSan Antonio
18h 40m
1 stop
LHR7:05 amLondon Heathrow
Nov 18
LHR8:00 pmLondon Heathrow
20h 59m
1 stop
SAT10:59 amSan Antonio
$599
Find similar
Virgin Atlantic
Feb 11
SAT10:57 amSan Antonio
13h 58m
2 stops
LHR6:55 amLondon Heathrow
Feb 25
LHR11:45 amLondon Heathrow
16h 34m
2 stops
SAT10:19 pmSan Antonio
$605
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to London Heathrow Airport 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 October 29, 2025.
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 11/26

11:50 am-8:45 am

1 stop14h 55m

London Heathrow

Thu 12/4

11:30 am-12:34 am

2 stops19h 04m

$591

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 11/19

12:10 pm-6:55 am

1 stop12h 45m

London Heathrow

Wed 12/3

8:55 am-9:03 pm

2 stops18h 08m

$592

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 2/26

4:10 pm-5:40 pm

2 stops19h 30m

London Heathrow

Tue 3/3

10:20 am-11:17 pm

2 stops18h 57m

$601

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 2/11

10:57 am-6:55 am

2 stops13h 58m

London Heathrow

Wed 2/25

11:45 am-10:19 pm

2 stops16h 34m

$605

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 3/3

1:15 pm-6:25 am

1 stop11h 10m

London Heathrow

Tue 3/10

9:40 am-10:32 pm

2 stops17h 52m

$612

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 12/1

7:00 am-7:55 am

1 stop18h 55m

London Heathrow

Thu 12/11

6:35 am-8:41 am

2 stops32h 06m

$619

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 4/9

12:10 pm-5:40 pm

2 stops23h 30m

London Heathrow

Thu 5/7

6:40 am-10:21 pm

2 stops21h 41m

$625

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 2/11

9:00 am-7:10 am

2 stops16h 10m

London Heathrow

Wed 2/18

6:35 am-8:53 pm

2 stops20h 18m

$627

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 11/19

12:55 pm-8:35 am

1 stop13h 40m

London Heathrow

Wed 11/26

11:55 am-7:41 pm

1 stop13h 46m

$643

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 2/11

1:08 pm-6:50 am

1 stop11h 42m

London Heathrow

Wed 2/18

3:00 pm-9:56 pm

1 stop12h 56m

$651

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 Heathrow Airport

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 Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from San Antonio, with most prices found around $628. If you’re not able to fly to London Heathrow Airport in October, then August is your next best option. Flight prices from San Antonio to London Heathrow Airport during August average around $775.

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

Our data shows that Thursday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $903. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $1,126.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is at noon. momondo users have found flights departing from San Antonio to London Heathrow Airport at noon for as low as $893. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $1,030.

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

You are more likely to see cheaper flights to London Heathrow Airport from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $967 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Antonio for as low as $756 on momondo.

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

You could potentially save up to 24% on your flight if you consider stops on a San Antonio to London Heathrow Airport flight.

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

As of October 2025, prices for San Antonio to London Heathrow Airport flights are approximately 5% cheaper when compared to flights at the same time last year.

When to book flights from San Antonio to London Heathrow Airport

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

Cheap San Antonio to London Heathrow Airport (SAT to LHR) flight deals and tips

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

Direct flights

None
There are no direct flights from San Antonio to London Heathrow Airport. There are no popular flight routes from San Antonio to London Heathrow Airport.
Search flight deals

  • How far is San Antonio to London Heathrow by plane?

    There are 4973.6 mi between San Antonio and London Heathrow. 11h 10m is a normal flight duration for this route.

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

    Prices for flights from San Antonio Airport to London Heathrow Airport are refreshed on a daily basis.

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

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

    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 Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport?

Best airlines flying from San Antonio to London Heathrow Airport

Compare and see reviews for airlines that fly from San Antonio to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $530Free CancellationRating
7.9
7,992 reviews
Search Delta flights
United AirlinesPriceFrom $531Free CancellationRating
7.4
9,001 reviews
Search United Airlines flights
British AirwaysPriceFrom $566Free CancellationRating
6.7
7,487 reviews
Search British Airways flights
American AirlinesPriceFrom $571Free CancellationRating
7.2
11,032 reviews
Search American Airlines flights
Virgin AtlanticPriceFrom $645Free CancellationRating
7.5
670 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $668Free CancellationRating
7.0
3,001 reviews
Search Iberia flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Stratford-upon-Avon
Brentwood
Salisbury
Chelmsford
Folkestone
Romford
Ilford
Swindon
Cobham
Wembley

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from San Antonio.

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?

momondo provides multiple filters to help you find the best flight to London from San Antonio. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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 not ready to book a flight from San Antonio to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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