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Cheap flights from San Antonio to London Heathrow Airport from £364

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 8/5. 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 return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from San Antonio to London.
Scandinavian Airlines Logo
12:15 - 16:00SAT-LHR
21h 45m2 stops
Scandinavian Airlines Logo
06:40 - 23:21LHR-SAT
22h 41m2 stops
£513Scandinavian Airlines
Find Deal
Mon, 15 Sep - Wed, 15 Oct
Scandinavian Airlines Logo
12:15 - 16:00SAT-LHR
21h 45m2 stops
Scandinavian Airlines Logo
18:40 - 00:14LHR-SAT
35h 34m2 stops
£551Scandinavian Airlines
Find Deal
Thu, 14 Aug - Sun, 24 Aug
Finnair Logo
14:40 - 12:30SAT-LHR
15h 50m1 stop
Finnair Logo
18:10 - 17:42LHR-SAT
29h 32m2 stops
£564Finnair
Find Deal
Sun, 24 Aug - Wed, 3 Sep
British Airways Logo
12:30 - 06:25SAT-LHR
11h 55m1 stop
British Airways Logo
16:25 - 23:37LHR-SAT
13h 12m1 stop
£569British Airways
Find Deal
Sun, 24 Aug - Wed, 3 Sep
United Airlines Logo
19:35 - 07:40SAT-LHR
30h 05m1 stop
United Airlines Logo
13:40 - 21:17LHR-SAT
13h 37m1 stop
£597United Airlines
Find Deal
Sun, 31 Aug - Thu, 11 Sep
 Logo
07:15 - 06:30SAT-LHR
17h 15m3 stops
 Logo
12:40 - 22:59LHR-SAT
16h 19m2 stops
Sun, 24 Aug - Wed, 3 Sep
British Airways Logo
17:30 - 12:30SAT-LHR
13h 00m1 stop
British Airways Logo
09:15 - 17:38LHR-SAT
14h 23m1 stop
£605British Airways
Find Deal
Tue, 12 Aug - Sat, 23 Aug
United Airlines Logo
12:55 - 08:20SAT-LHR
13h 25m1 stop
United Airlines Logo
09:30 - 12:01LHR-SAT
32h 31m2 stops
£613United Airlines
Find Deal
Tue, 12 Aug - Sat, 23 Aug
 Logo
10:34 - 11:55SAT-LHR
19h 21m2 stops
 Logo
15:05 - 05:04LHR-SAT
43h 59m3 stops
Thu, 8 May - Thu, 15 May
Finnair Logo
18:45 - 12:30SAT-LHR
11h 45m1 stop
Finnair Logo
16:10 - 17:44LHR-SAT
31h 34m2 stops
£637Finnair
Find Deal
Thu, 14 Aug - Sun, 24 Aug

Finnair flights from San Antonio to London Heathrow Airport

Our best Finnair deals on San Antonio to London Heathrow Airport flight tickets
Finnair
24 Aug
SAT14:40San Antonio
15h 50m
1 stop
LHR12:30London Heathrow
3 Sept
LHR18:10London Heathrow
29h 32m
2 stops
SAT17:42San Antonio
Finnair
14 Aug
SAT18:45San Antonio
11h 45m
1 stop
LHR12:30London Heathrow
24 Aug
LHR16:10London Heathrow
31h 34m
2 stops
SAT17:44San Antonio
Finnair
9 May
SAT14:34San Antonio
16h 11m
1 stop
LHR12:45London Heathrow
16 May
LHR09:30London Heathrow
18h 33m
2 stops
SAT22:03San Antonio

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
24 Aug
SAT12:30San Antonio
11h 55m
1 stop
LHR06:25London Heathrow
3 Sept
LHR16:25London Heathrow
13h 12m
1 stop
SAT23:37San Antonio
British Airways
12 Aug
SAT17:30San Antonio
13h 00m
1 stop
LHR12:30London Heathrow
23 Aug
LHR09:15London Heathrow
14h 23m
1 stop
SAT17:38San Antonio
British Airways
12 May
SAT20:34San Antonio
11h 51m
1 stop
LHR14:25London Heathrow
19 Aug
LHR07:50London Heathrow
18h 06m
2 stops
SAT19:56San 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 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?

In general, October is the cheapest month to fly from San Antonio to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £557. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from San Antonio averaging around £585.

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

On average, the least expensive day to fly to London Heathrow Airport from San Antonio is on a Monday. momondo users have found tickets for Monday departures for as low as £0. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £1,305.

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 in the evening. momondo users have found flights departing from San Antonio to London Heathrow Airport in the evening for as low as £0. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £1,021 on average. Flights to London Heathrow Airport from San Antonio in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 20 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £714 when searching 20 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 £630 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 return 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

£364

Fastest flight time

11h 06m

Direct flights

None
The best one-way flight to London Heathrow Airport from San Antonio in the past 72 hours is £364. The best return flight deal from San Antonio to London Heathrow Airport found on momondo in the last 72 hours is £513.
The fastest flight from San Antonio to London Heathrow Airport takes 11h 06m
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?

    A flight from San Antonio to London Heathrow will travel around 4973.6 mi. In terms of flight time, this usually takes a little over 11h 06m.

  • 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 refresh daily.

  • 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 necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted 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
British AirwaysPriceFrom £583Free CancellationRating
6.6
6,809 reviews
Search British Airways flights

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Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Antonio to London for you.

Can I find flights from San Antonio to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from San Antonio which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between San Antonio and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from San Antonio to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from San Antonio are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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