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Cheap flights from San Antonio to London Heathrow Airport from £313

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 10/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
British Airways Logo
15:15 - 09:10SAT-LHR
11h 55m1 stop
British Airways Logo
07:45 - 18:53LHR-SAT
17h 08m2 stops
£511British Airways
Find Deal
Mon, 12 May - Fri, 12 Sep
British Airways Logo
15:15 - 09:10SAT-LHR
11h 55m1 stop
British Airways Logo
20:00 - 22:51LHR-SAT
32h 51m2 stops
£518British Airways
Find Deal
Mon, 12 May - Tue, 7 Oct
Iberia Logo
18:28 - 12:15SAT-LHR
11h 47m1 stop
Iberia Logo
15:30 - 23:29LHR-SAT
13h 59m1 stop
£519Iberia
Find Deal
Mon, 15 Sep - Wed, 15 Oct
Scandinavian Airlines Logo
11:59 - 16:00SAT-LHR
22h 01m2 stops
Scandinavian Airlines Logo
19:30 - 00:14LHR-SAT
34h 44m2 stops
£522Scandinavian Airlines
Find Deal
Mon, 12 May - Tue, 19 Aug
Scandinavian Airlines Logo
11:59 - 16:00SAT-LHR
22h 01m2 stops
Scandinavian Airlines Logo
06:40 - 23:26LHR-SAT
22h 46m2 stops
£523Scandinavian Airlines
Find Deal
Mon, 12 May - Tue, 19 Aug
Virgin Atlantic Logo
18:06 - 13:10SAT-LHR
13h 04m1 stop
Virgin Atlantic Logo
15:15 - 00:25LHR-SAT
15h 10m1 stop
£524Virgin Atlantic
Find Deal
Mon, 12 May - Fri, 12 Sep
Virgin Atlantic Logo
16:15 - 11:10SAT-LHR
12h 55m1 stop
Virgin Atlantic Logo
09:20 - 00:14LHR-SAT
20h 54m1 stop
£526Virgin Atlantic
Find Deal
Mon, 12 May - Tue, 19 Aug
United Airlines Logo
13:10 - 09:40SAT-LHR
14h 30m1 stop
United Airlines Logo
14:05 - 15:45LHR-SAT
31h 40m2 stops
£529United Airlines
Find Deal
Wed, 23 Apr - Tue, 29 Apr
United Airlines Logo
14:10 - 07:40SAT-LHR
11h 30m1 stop
United Airlines Logo
07:30 - 20:34LHR-SAT
19h 04m2 stops
£537United Airlines
Find Deal
Tue, 15 Apr - Tue, 22 Apr
Iberia Logo
18:34 - 12:15SAT-LHR
11h 41m1 stop
Iberia Logo
18:45 - 22:56LHR-SAT
34h 11m2 stops
£539Iberia
Find Deal
Mon, 12 May - Tue, 12 Aug

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
12 May
SAT15:15San Antonio
11h 55m
1 stop
LHR09:10London Heathrow
12 Sept
LHR07:45London Heathrow
17h 08m
2 stops
SAT18:53San Antonio
British Airways
12 May
SAT15:15San Antonio
11h 55m
1 stop
LHR09:10London Heathrow
7 Oct
LHR20:00London Heathrow
32h 51m
2 stops
SAT22:51San Antonio
British Airways
30 Apr
SAT20:35San Antonio
11h 50m
1 stop
LHR14:25London Heathrow
7 May
LHR16:25London Heathrow
13h 33m
1 stop
SAT23:58San Antonio

Iberia flights from San Antonio to London Heathrow Airport

Our best Iberia deals on San Antonio to London Heathrow Airport flight tickets
Iberia
15 Sept
SAT18:28San Antonio
11h 47m
1 stop
LHR12:15London Heathrow
15 Oct
LHR15:30London Heathrow
13h 59m
1 stop
SAT23:29San Antonio
Iberia
12 May
SAT18:34San Antonio
11h 41m
1 stop
LHR12:15London Heathrow
12 Aug
LHR18:45London Heathrow
34h 11m
2 stops
SAT22:56San Antonio
Iberia
12 Apr
SAT18:22San Antonio
30h 03m
1 stop
LHR06:25London Heathrow
25 Apr
LHR12:00London Heathrow
13h 45m
1 stop
SAT19:45San 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?

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 £568. The month of April is another great option to travel to London Heathrow Airport, with average flight prices from San Antonio averaging around £602.

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 £1,344.

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 £1,051 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 13 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £738 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 £671 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 38% 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

£313

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 £313. The best return flight deal from San Antonio to London Heathrow Airport found on momondo in the last 72 hours is £511.
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?

    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 16m.

  • 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 £600Free CancellationRating
6.6
6,715 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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