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Cheap flights from San Antonio to London Heathrow Airport from £241

SAT — LHR
22 Nov — 29 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Antonio to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from San Antonio to Heathrow

Mon 16/1112:45 -
1 stop17h 25m
Wed 25/1107:35 -
2 stops22h 58m
Deal found 19/10£679
Tue 17/1111:22 -
1 stop16h 38m
Mon 23/1119:40 -
2 stops18h 54m
Deal found 20/10£679
Wed 30/1212:59 -
1 stop11h 51m
Thu 14/107:30 -
2 stops19h 27m
Deal found 19/10£680
Wed 18/1108:56 -
2 stops19h 54m
Tue 24/1106:50 -
2 stops22h 44m
Deal found 18/10£681
Tue 1/1207:38 -
1 stop18h 12m
Tue 8/1210:00 -
2 stops18h 19m
Deal found 20/10£682
Wed 30/1213:00 -
1 stop11h 25m
Wed 13/108:40 -
2 stops18h 12m
Deal found 19/10£682
Wed 30/1213:00 -
1 stop11h 25m
Thu 14/111:45 -
2 stops17h 35m
Deal found 20/10£683
Mon 23/1111:45 -
2 stops15h 15m
Tue 8/1208:40 -
2 stops18h 51m
Deal found 18/10£684
Mon 16/1105:30 -
3 stops23h 45m
Mon 23/1111:05 -
2 stops42h 29m
Deal found 19/10£690

Find flight deals from San Antonio to Heathrow

Round-trip from

£634

One-way from

£241

Popular in

June

Cheapest in

January

Average price

£738
Iberia
  • Iberia
  • 25/1-1/2
  • 3 total stops
  • 33h 17m total
  • San Antonio to London
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British Airways
  • British Airways
  • 22/3-31/12
  • 1 total stop
  • 14h 29m total
  • San Antonio to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£74 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

 
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

Cheapest return flight

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 4/4

16:45-12:35

1 stop13h 50m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£248
Fastest return journey

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 4/4

18:00-12:15

1 stop12h 15m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£248

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 22/2

14:10-09:00

1 stop12h 50m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£248

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 4/4

08:00-06:20

2 stops16h 20m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£248

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 22/3

13:25-10:50

2 stops16h 25m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£252

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Thu 25/2

10:45-10:30

2 stops17h 45m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£285

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sat 27/2

06:45-07:15

2 stops18h 30m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£285

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Thu 1/4

10:00-08:30

2 stops16h 30m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£289

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 2/11

07:15-08:05

2 stops18h 50m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£319

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 18/1

14:10-10:15

1 stop14h 05m

London Heathrow

Mon 25/1

13:45-12:01

2 stops52h 16m

£661

Flights are sorted by cheapest return flights first.

Deals found on 20/10

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from San Antonio to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Antonio with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from San Antonio to London Heathrow Airport

How far ahead should I book a flight from San Antonio to London Heathrow Airport?

The price you pay for your flight from San Antonio to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 32 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £648). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £957). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from San Antonio to London Heathrow Airport?

Airfare is below average for this route at the moment.

San Antonio to London Heathrow Airport flights typically cost between £683 and £1,053 in January.
The cheapest return price found within the last 5 days was £634 on Iberia (25 Jan–1 Feb).

Related info for your journey

  • What airport do you fly from for flights from San Antonio to London Heathrow?

    San Antonio (SAT), located 7.6 mi from the city center, is the airport you fly out of when you book flights from San Antonio to London Heathrow. 0 airlines have flights from San Antonio to London Heathrow on a regular basis. Booking flights from San Antonio to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

  • How long is the flight from San Antonio to London Heathrow Airport?

    A quick flight from San Antonio to London Heathrow Airport can take about 14h 05m. United Airlines provides one of the quickest options available for as low as £661. The distance from San Antonio to London Heathrow Airport is about 4967 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from San Antonio to Heathrow that include hotel bookings?

    Yes. In addition to deals on San Antonio to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Heathrow.

  • Can I find deals for business class flights from San Antonio to Heathrow?

    Yes. Cheapflights offers flight deals from San Antonio to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £648). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £957). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Luton
Milton Keynes
Slough
Gatwick
Wembley
Hayes
Ilford
Croydon
Northampton
Colchester
Barnet
Eastbourne
Brentford
Southend-on-Sea
Enfield
Southall
Watford
Stratford-upon-Avon
Kingston upon Thames

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Yes! Cheapflights helps users easily find flights from San Antonio to Heathrow with no change fees.

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Yes, Cheapflights offers price alerts on San Antonio to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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