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Cheap flights from San Antonio to London Heathrow Airport from $405

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 Heathrow Airport departing on 5/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Antonio to London.
British Airways Logo
3:15 pm - 9:10 amSAT-LHR
11h 55m1 stop
British Airways Logo
7:45 am - 6:53 pmLHR-SAT
17h 08m2 stops
$660British Airways
Find Deal
Mon, May 12 - Fri, Sep 12
British Airways Logo
3:15 pm - 9:10 amSAT-LHR
11h 55m1 stop
British Airways Logo
8:00 pm - 10:51 pmLHR-SAT
32h 51m2 stops
$669British Airways
Find Deal
Mon, May 12 - Tue, Oct 7
Iberia Logo
6:28 pm - 12:15 pmSAT-LHR
11h 47m1 stop
Iberia Logo
3:30 pm - 11:29 pmLHR-SAT
13h 59m1 stop
$671Iberia
Find Deal
Mon, Sep 15 - Wed, Oct 15
Virgin Atlantic Logo
6:06 pm - 1:10 pmSAT-LHR
13h 04m1 stop
Virgin Atlantic Logo
3:15 pm - 12:25 amLHR-SAT
15h 10m1 stop
$677Virgin Atlantic
Find Deal
Mon, May 12 - Fri, Sep 12
Virgin Atlantic Logo
4:15 pm - 11:10 amSAT-LHR
12h 55m1 stop
Virgin Atlantic Logo
9:20 am - 12:14 amLHR-SAT
20h 54m1 stop
$680Virgin Atlantic
Find Deal
Mon, May 12 - Tue, Aug 19
United Airlines Logo
4:52 pm - 12:20 pmSAT-LHR
13h 28m1 stop
United Airlines Logo
9:30 am - 12:12 pmLHR-SAT
32h 42m2 stops
$684United Airlines
Find Deal
Wed, Apr 23 - Wed, Apr 30
United Airlines Logo
2:10 pm - 7:40 amSAT-LHR
11h 30m1 stop
United Airlines Logo
7:30 am - 8:34 pmLHR-SAT
19h 04m2 stops
$694United Airlines
Find Deal
Tue, Apr 15 - Tue, Apr 22
Delta Logo
11:59 am - 9:50 amSAT-LHR
15h 51m1 stop
Delta Logo
9:20 am - 5:07 pmLHR-SAT
13h 47m1 stop
$698Delta
Find Deal
Sun, May 11 - Fri, Aug 22
Delta Logo
2:10 pm - 1:30 pmSAT-LHR
17h 20m1 stop
Delta Logo
11:45 am - 12:25 amLHR-SAT
18h 40m2 stops
$701Delta
Find Deal
Mon, Sep 15 - Wed, Oct 15
Iberia Logo
6:22 pm - 6:25 amSAT-LHR
30h 03m1 stop
Iberia Logo
12:00 pm - 7:45 pmLHR-SAT
13h 45m1 stop
$705Iberia
Find Deal
Sat, Apr 12 - Fri, Apr 25

British Airways flights from San Antonio to London Heathrow Airport

Our best British Airways deals on San Antonio to London Heathrow Airport flight tickets
British Airways
May 12
SAT3:15 pmSan Antonio
11h 55m
1 stop
LHR9:10 amLondon Heathrow
Sep 12
LHR7:45 amLondon Heathrow
17h 08m
2 stops
SAT6:53 pmSan Antonio
British Airways
May 12
SAT3:15 pmSan Antonio
11h 55m
1 stop
LHR9:10 amLondon Heathrow
Oct 7
LHR8:00 pmLondon Heathrow
32h 51m
2 stops
SAT10:51 pmSan Antonio
British Airways
May 11
SAT3:15 pmSan Antonio
13h 15m
1 stop
LHR10:30 amLondon Heathrow
Aug 14
LHR6:10 amLondon Heathrow
19h 46m
2 stops
SAT7:56 pmSan Antonio

Iberia flights from San Antonio to London Heathrow Airport

Our best Iberia deals on San Antonio to London Heathrow Airport flight tickets
Iberia
Sep 15
SAT6:28 pmSan Antonio
11h 47m
1 stop
LHR12:15 pmLondon Heathrow
Oct 15
LHR3:30 pmLondon Heathrow
13h 59m
1 stop
SAT11:29 pmSan Antonio
Iberia
Apr 12
SAT6:22 pmSan Antonio
30h 03m
1 stop
LHR6:25 amLondon Heathrow
Apr 25
LHR12:00 pmLondon Heathrow
13h 45m
1 stop
SAT7:45 pmSan Antonio
Iberia
Aug 12
SAT6:45 pmSan Antonio
13h 40m
1 stop
LHR2:25 pmLondon Heathrow
Aug 23
LHR3:30 pmLondon Heathrow
14h 27m
1 stop
SAT11:57 pmSan Antonio

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 $734. If you’re not able to fly to London Heathrow Airport in October, then April is your next best option. Flight prices from San Antonio to London Heathrow Airport during April average around $778.

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 13 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $954 when searching 13 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 $867 on momondo.

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

As of April 2025, prices for San Antonio to London Heathrow Airport flights are approximately 39% 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

Best Price Found

$405

Fastest flight time

11h 16m

Direct flights

None
The best one-way flight to London Heathrow Airport from San Antonio in the past 72 hours is $405. The best round-trip flight deal from San Antonio to London Heathrow Airport found on momondo in the last 72 hours is $660.
The fastest flight from San Antonio to London Heathrow Airport takes 11h 16m
There are no direct flights from San Antonio to London Heathrow Airport. Popular non-direct route for this connection is San Antonio Airport - London Heathrow Airport.

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

    There are 4973.6 mi between San Antonio and London Heathrow. 11h 16m 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
IberiaPriceFrom $672Free CancellationRating
7.0
2,657 reviews
Search Iberia flights
United AirlinesPriceFrom $692Free CancellationRating
7.4
8,616 reviews
Search United Airlines flights
British AirwaysPriceFrom $703Free CancellationRating
6.6
6,717 reviews
Search British Airways flights
Virgin AtlanticPriceFrom $745Free CancellationRating
7.4
637 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $753Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $778Free CancellationRating
8.0
7,897 reviews
Search Delta flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Croydon
Luton
Guildford
Hayes
Slough
Dartford
Stansted
Ilford
Salisbury
Swindon
Dover
Canterbury
Colchester
Milton Keynes
Horley
Wembley
Chelmsford
Eastbourne

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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