Find flights
When to book
FAQs

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

SAT — LHR
19 Nov — 26 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 23/1113:44 -
1 stop12h 06m
Tue 8/1211:45 -
2 stops18h 50m
Deal found 16/10£679
Mon 23/1117:34 -
2 stops31h 36m
Tue 8/1207:40 -
2 stops18h 54m
Deal found 16/10£682
Tue 17/1111:22 -
1 stop16h 38m
Mon 23/1119:40 -
2 stops18h 54m
Deal found 19/10£682
Mon 16/1111:22 -
1 stop14h 53m
Mon 23/1119:40 -
2 stops18h 54m
Deal found 17/10£683
Wed 30/1212:59 -
1 stop11h 51m
Thu 14/107:30 -
2 stops19h 27m
Deal found 19/10£684
Wed 18/1108:56 -
2 stops19h 54m
Tue 24/1106:50 -
2 stops22h 44m
Deal found 18/10£685
Wed 30/1213:00 -
1 stop11h 25m
Wed 13/108:40 -
2 stops18h 12m
Deal found 16/10£685
Wed 30/1213:00 -
1 stop11h 25m
Thu 14/111:45 -
2 stops17h 35m
Deal found 19/10£686
Tue 1/1209:41 -
2 stops15h 29m
Wed 9/1211:10 -
2 stops17h 42m
Deal found 16/10£687
Mon 23/1111:45 -
2 stops15h 15m
Tue 8/1208:40 -
2 stops18h 51m
Deal found 18/10£688
Mon 16/1107:15 -
2 stops25h 05m
Wed 25/1107:35 -
2 stops22h 58m
Deal found 19/10£688

Find flight deals from San Antonio to Heathrow

Round-trip from

£636

One-way from

£245

Popular in

June

Cheapest in

January

Average price

£742
Iberia
  • Iberia
  • 8/2-17/2
  • 3 total stops
  • 37h 56m total
  • San Antonio to London
Search Deals
British Airways
  • British Airways
  • 6/4-31/12
  • 1 total stop
  • 18h 24m total
  • San Antonio to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£75 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

£249

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

£249
Fastest return journey

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

£249

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Sun 31/1

16:10-21:20

2 stops23h 10m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£249

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

£249

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Mon 22/2

16:15-20:35

2 stops22h 20m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£249

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

£664

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Wed 18/11

05:30-06:25

1 stop18h 55m

London Heathrow

Tue 24/11

06:30-19:48

2 stops19h 18m

£685

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Wed 18/11

08:56-10:50

2 stops19h 54m

London Heathrow

Tue 24/11

06:50-23:34

2 stops22h 44m

£685

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Wed 30/12

13:00-06:25

1 stop11h 25m

London Heathrow

Wed 13/1

08:40-20:52

2 stops18h 12m

£685

Flights are sorted by cheapest return flights first.

Deals found on 18/10

Showing 1-10 of 16 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 £652). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £962). 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 £687 and £1,059 in February.
The cheapest return price found within the last 5 days was £636 on Iberia (8 Feb–17 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 £664. 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 £652). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £962). 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

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from San Antonio to Heathrow?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Antonio to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from San Antonio to Heathrow?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Antonio to Heathrow for you. Better yet — we are completely free to use.

Can Cheapflights find flights from San Antonio to Heathrow with no change fees?

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

Can Cheapflights notify me if prices for flights from San Antonio to Heathrow become cheaper?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.