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Cheap flights from San Antonio to London from $286

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 10/1. 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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Find the cheapest flights from San Antonio to London

Cheap round-trip flights

Lufthansa Logo
2:15 pm - 7:40 amSAT-LHR
11h 25m1 stop
Lufthansa Logo
11:25 am - 8:46 pmLHR-SAT
15h 21m1 stop
$482Lufthansa
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Sun, Aug 10 - Tue, Aug 26
Air Canada Logo
7:05 am - 6:30 amSAT-LHR
17h 25m2 stops
Air Canada Logo
9:30 am - 3:30 pmLHR-SAT
36h 00m2 stops
$509Air Canada
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Sun, Aug 10 - Tue, Aug 26
United Airlines Logo
5:56 pm - 11:35 amSAT-LHR
11h 39m1 stop
United Airlines Logo
2:05 pm - 3:30 pmLHR-SAT
31h 25m2 stops
$510United Airlines
Find Deal
Mon, Aug 18 - Wed, Aug 27
United Airlines Logo
11:58 am - 6:55 amSAT-LHR
12h 57m1 stop
United Airlines Logo
9:30 am - 12:01 pmLHR-SAT
32h 31m2 stops
$511United Airlines
Find Deal
Mon, Aug 18 - Wed, Aug 27
British Airways Logo
1:16 pm - 6:50 amSAT-LHR
11h 34m1 stop
British Airways Logo
8:20 am - 3:47 pmLHR-SAT
13h 27m1 stop
$512British Airways
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Tue, Oct 7 - Wed, Oct 15
British Airways Logo
4:19 pm - 10:50 amSAT-LHR
12h 31m1 stop
British Airways Logo
10:30 am - 5:41 pmLHR-SAT
13h 11m1 stop
$517British Airways
Find Deal
Mon, Aug 18 - Wed, Aug 27
Delta Logo
2:23 pm - 1:30 pmSAT-LHR
17h 07m1 stop
Delta Logo
11:30 am - 11:57 pmLHR-SAT
18h 27m2 stops
$525Delta
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Sun, Aug 10 - Tue, Aug 26
Delta Logo
5:25 am - 6:45 amSAT-LHR
19h 20m1 stop
Delta Logo
11:30 am - 11:34 pmLHR-SAT
18h 04m2 stops
$526Delta
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Tue, Aug 5 - Tue, Aug 12
Iberia Logo
7:35 pm - 5:15 pmSAT-LHR
15h 40m2 stops
Iberia Logo
11:30 am - 11:00 pmLHR-SAT
17h 30m2 stops
$586Iberia
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Wed, Jul 23 - Wed, Sep 3
Iberia Logo
7:35 pm - 12:45 pmSAT-LHR
11h 10m1 stop
Iberia Logo
4:25 pm - 10:59 pmLHR-SAT
12h 34m1 stop
$593Iberia
Find Deal
Mon, Jul 21 - Wed, Aug 13

Air Canada flights from San Antonio to London Heathrow Airport

Our best Air Canada deals on San Antonio to London Heathrow Airport flight tickets
Air Canada
Aug 10
SAT7:05 amSan Antonio
17h 25m
2 stops
LHR6:30 amLondon Heathrow
Aug 26
LHR9:30 amLondon Heathrow
36h 00m
2 stops
SAT3:30 pmSan Antonio
$509
Find similar
Air Canada
Oct 7
SAT5:30 amSan Antonio
21h 05m
2 stops
LHR8:35 amLondon Heathrow
Oct 28
LHR11:10 amLondon Heathrow
30h 22m
2 stops
SAT12:32 pmSan Antonio
$524
Find similar
Air Canada
Jan 6
SAT7:30 amSan Antonio
17h 40m
2 stops
LHR7:10 amLondon Heathrow
Jan 13
LHR6:00 pmLondon Heathrow
24h 10m
2 stops
SAT12:10 pmSan Antonio
$531
Find similar

Delta flights from San Antonio to London Heathrow Airport

Our best Delta deals on San Antonio to London Heathrow Airport flight tickets
Delta
Aug 10
SAT2:23 pmSan Antonio
17h 07m
1 stop
LHR1:30 pmLondon Heathrow
Aug 26
LHR11:30 amLondon Heathrow
18h 27m
2 stops
SAT11:57 pmSan Antonio
$525
Find similar
Delta
Aug 5
SAT5:25 amSan Antonio
19h 20m
1 stop
LHR6:45 amLondon Heathrow
Aug 12
LHR11:30 amLondon Heathrow
18h 04m
2 stops
SAT11:34 pmSan Antonio
$526
Find similar
Delta
Aug 10
SAT10:45 amSan Antonio
16h 05m
2 stops
LHR8:50 amLondon Heathrow
Aug 26
LHR11:30 amLondon Heathrow
18h 27m
2 stops
SAT11:57 pmSan Antonio
$529
Find similar

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 typical price of a round-trip flight between San Antonio and London Heathrow Airport?

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 $703. If you’re not able to fly to London Heathrow Airport in October, then January is your next best option. Flight prices from San Antonio to London Heathrow Airport during January average around $786.

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 $974 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 $838 on momondo.

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

You could potentially save up to 17% 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 July 2025, prices for San Antonio to London Heathrow Airport flights are approximately 59% 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

$286

Fastest flight time

11h 10m

Direct flights

None
The best one-way flight to London Heathrow Airport from San Antonio in the past 72 hours is $286. The best round-trip flight deal from San Antonio to London Heathrow Airport found on momondo in the last 72 hours is $482.
The fastest flight from San Antonio to London Heathrow Airport takes 11h 10m
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.
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  • 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 $649Free CancellationRating
8.0
7,951 reviews
Search Delta flights
IberiaPriceFrom $668Free CancellationRating
7.0
2,828 reviews
Search Iberia flights
British AirwaysPriceFrom $698Free CancellationRating
6.6
7,109 reviews
Search British Airways flights
United AirlinesPriceFrom $698Free CancellationRating
7.4
8,846 reviews
Search United Airlines flights
American AirlinesPriceFrom $704Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Virgin AtlanticPriceFrom $715Free CancellationRating
7.4
653 reviews
Search Virgin Atlantic flights

Traveling to a place near London?

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Gatwick
Croydon
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Stansted
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Swindon
Ilford
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Stratford-upon-Avon
Chelmsford
Canterbury
Watford
Richmond

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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