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Cheap flights from San Antonio to London Heathrow Airport from £245

SAT — LHR
10 Oct — 17 Oct1
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

Tue 17/1117:47 -
1 stop12h 23m
Mon 23/1118:45 -
2 stops19h 49m
Deal found 9/9£538
Tue 6/1012:46 -
1 stop11h 34m
Tue 13/1015:15 -
1 stop14h 43m
Deal found 8/9£548
Tue 22/908:00 -
1 stop17h 15m
Tue 29/909:55 -
2 stops17h 19m
Deal found 8/9£550
Wed 23/908:00 -
2 stops16h 20m
Wed 30/909:55 -
2 stops17h 27m
Deal found 9/9£553
Tue 6/1010:48 -
2 stops14h 22m
Tue 13/1011:30 -
2 stops17h 37m
Deal found 8/9£553
Wed 23/913:55 -
1 stop11h 20m
Wed 7/1009:20 -
1 stop13h 54m
Deal found 9/9£555
Wed 23/914:35 -
1 stop12h 30m
Fri 9/1016:25 -
1 stop13h 34m
Deal found 8/9£556
Sat 26/917:00 -
1 stop31h 25m
Thu 8/1009:20 -
1 stop13h 54m
Deal found 9/9£559
Tue 29/1212:46 -
1 stop12h 04m
Fri 8/107:30 -
2 stops18h 16m
Deal found 8/9£562
Wed 30/1211:47 -
2 stops16h 43m
Thu 14/111:45 -
2 stops18h 43m
Deal found 9/9£565
Sun 20/918:10 -
1 stop13h 05m
Sun 4/1010:45 -
1 stop17h 59m
Deal found 9/9£572
Thu 8/1008:50 -
1 stop17h 45m
Thu 15/1017:40 -
1 stop34h 33m
Deal found 9/9£576

Find flight deals from San Antonio to Heathrow

Round-trip from

£536

One-way from

£245

Popular in

June

Cheapest in

October

Average price

£762
Iberia
  • Iberia
  • 2/2-9/2
  • 3 total stops
  • 32h 55m total
  • San Antonio to London
Search Deals
Virgin Atlantic
  • Virgin Atlantic
  • 24/2-31/12
  • 1 total stop
  • 13h 15m total
  • San Antonio to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£94 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 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

Tue 23/2

05:30-11:15

3 stops23h 45m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£245
Fastest return journey

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Wed 24/2

16:25-11:40

1 stop13h 15m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£245

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Fri 26/2

08:00-07:55

2 stops17h 55m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£282

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Fri 11/12

08:55-09:40

1 stop18h 45m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£282

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Thu 25/2

09:00-07:25

1 stop16h 25m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£282

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Wed 23/12

16:13-21:20

2 stops23h 07m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£320

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 5/10

16:00-13:15

2 stops15h 15m

London Heathrow

Tue 20/10

08:40-21:10

2 stops18h 30m

£553

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Tue 22/9

18:07-13:05

1 stop12h 58m

London Heathrow

Fri 2/10

11:15-21:19

1 stop16h 04m

£555

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 19/10

07:50-06:45

2 stops16h 55m

London Heathrow

Sun 25/10

10:55-00:13

1 stop18h 18m

£595

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 7/12

13:35-09:40

1 stop14h 05m

London Heathrow

Wed 9/12

09:30-21:07

2 stops17h 37m

£613

Flights are sorted by cheapest return flights first.

Deals found on 5/9

Showing 1-10 of 17 resultsSorted by cheapest first
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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 34 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, October is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £545). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £949). 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 £722 and £878 in February.
The cheapest return price found within the last 5 days was £536 on Iberia (2 Feb–9 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 12h 58m. Delta provides one of the quickest options available for as low as £555. 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, October is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £545). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £949). 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
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Hayes
Northampton
Croydon
Colchester
Eastbourne
Brentford
Enfield
Southend-on-Sea
Barnet
Salisbury
Watford
Southall
Swindon

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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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