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Cheap flights from San Antonio to London from £258

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 14/2. 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

Air Canada Logo
06:45 - 06:30SAT-LHR
17h 45m2 stops
Air Canada Logo
14:05 - 15:33LHR-SAT
31h 28m2 stops
£375Air Canada
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Sun, 5 Oct - Tue, 21 Oct
Air Canada Logo
19:38 - 06:30SAT-LHR
28h 52m2 stops
Air Canada Logo
14:05 - 15:33LHR-SAT
31h 28m2 stops
£378Air Canada
Find Deal
Sat, 11 Oct - Tue, 21 Oct
Iberia Logo
15:00 - 08:35SAT-LHR
11h 35m1 stop
Iberia Logo
14:10 - 21:49LHR-SAT
13h 39m1 stop
£382Iberia
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Tue, 4 Nov - Thu, 20 Nov
Delta Logo
11:35 - 12:05SAT-LHR
18h 30m1 stop
Delta Logo
09:00 - 22:42LHR-SAT
19h 42m2 stops
£386Delta
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Wed, 1 Oct - Wed, 8 Oct
United Airlines Logo
14:14 - 11:05SAT-LHR
14h 51m2 stops
United Airlines Logo
12:00 - 22:56LHR-SAT
16h 56m2 stops
£387United Airlines
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Tue, 4 Nov - Thu, 20 Nov
British Airways Logo
11:11 - 07:40SAT-LHR
14h 29m1 stop
British Airways Logo
08:20 - 15:47LHR-SAT
13h 27m1 stop
£388British Airways
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Wed, 1 Oct - Wed, 8 Oct
Delta Logo
11:26 - 08:50SAT-LHR
15h 24m2 stops
Delta Logo
11:30 - 00:20LHR-SAT
18h 50m2 stops
£389Delta
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Wed, 1 Oct - Wed, 8 Oct
United Airlines Logo
07:16 - 07:40SAT-LHR
18h 24m1 stop
United Airlines Logo
14:10 - 22:55LHR-SAT
14h 45m1 stop
£389United Airlines
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Tue, 30 Sep - Tue, 7 Oct
British Airways Logo
11:57 - 07:20SAT-LHR
13h 23m1 stop
British Airways Logo
12:35 - 23:31LHR-SAT
16h 56m1 stop
£391British Airways
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Tue, 27 Jan - Thu, 5 Feb
Iberia Logo
13:12 - 10:00SAT-LHR
15h 48m1 stop
Iberia Logo
12:35 - 22:38LHR-SAT
16h 03m1 stop
£405Iberia
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Fri, 31 Oct - Fri, 7 Nov

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
21 Oct
SAT12:23San Antonio
13h 42m
2 stops
LHR08:05London Heathrow
30 Oct
LHR11:45London Heathrow
15h 57m
2 stops
SAT22:42San Antonio
£390
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Virgin Atlantic
17 Sept
SAT14:00San Antonio
11h 15m
1 stop
LHR07:15London Heathrow
25 Sept
LHR12:25London Heathrow
15h 05m
1 stop
SAT21:30San Antonio
£878
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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
14 Jan
SAT16:10San Antonio
41h 50m
2 stops
LHR16:00London Heathrow
17 Jan
LHR06:40London Heathrow
22h 53m
2 stops
SAT23:33San Antonio
£398
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Scandinavian Airlines
15 Jan
SAT10:45San Antonio
23h 15m
2 stops
LHR16:00London Heathrow
19 Jan
LHR10:20London Heathrow
18h 57m
2 stops
SAT23:17San Antonio
£444
Find similar
Scandinavian Airlines
11 Feb
SAT16:10San Antonio
23h 30m
2 stops
LHR21:40London Heathrow
18 Feb
LHR07:05London Heathrow
22h 12m
3 stops
SAT23:17San Antonio
£447
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momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 16 September 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

Sun 5/10

06:45-06:30

2 stops17h 45m

London Heathrow

Tue 21/10

14:05-15:33

2 stops31h 28m

£375

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sat 11/10

19:38-06:30

2 stops28h 52m

London Heathrow

Tue 21/10

14:05-15:33

2 stops31h 28m

£378

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 4/11

15:00-08:35

1 stop11h 35m

London Heathrow

Thu 20/11

14:10-21:49

1 stop13h 39m

£382

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 1/10

11:35-12:05

1 stop18h 30m

London Heathrow

Wed 8/10

09:00-22:42

2 stops19h 42m

£386

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 4/11

14:14-11:05

2 stops14h 51m

London Heathrow

Thu 20/11

12:00-22:56

2 stops16h 56m

£387

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 1/10

11:11-07:40

1 stop14h 29m

London Heathrow

Wed 8/10

08:20-15:47

1 stop13h 27m

£388

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 1/10

11:26-08:50

2 stops15h 24m

London Heathrow

Wed 8/10

11:30-00:20

2 stops18h 50m

£389

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 30/9

07:16-07:40

1 stop18h 24m

London Heathrow

Tue 7/10

14:10-22:55

1 stop14h 45m

£389

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 27/1

11:57-07:20

1 stop13h 23m

London Heathrow

Thu 5/2

12:35-23:31

1 stop16h 56m

£391

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 31/10

13:12-10:00

1 stop15h 48m

London Heathrow

Fri 7/11

12:35-22:38

1 stop16h 03m

£405

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 £463. The month of August is another great option to travel to London Heathrow Airport, with average flight prices from San Antonio averaging around £570.

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 Tuesday. momondo users have found tickets for Tuesday departures for as low as £733. 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 £1,278.

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 midday. momondo users have found flights departing from San Antonio to London Heathrow Airport at midday for as low as £909. 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 £999 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 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £702 when searching weeks before you fly. 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 £550 on momondo.

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

As of September 2025, prices for San Antonio to London Heathrow Airport flights are approximately 46% 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

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.
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  • 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 15m.

  • 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 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.

Travelling to a place near London?

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Ipswich
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Swanage
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Worthing
Salisbury
Chelmsford

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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