The cheapest times to fly from LHR to SAT are

  • January 1st to March 11th
  • May 7th to May 20th
  • September 3rd to December 9th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from LHR to SAT is early to mid October. Prices can be as high as $1635 for Friday flights during early August, or as low as $779 for Tuesday flights around early to mid October.


When to Fly to San Antonio

Flying from London (LHR) to San Antonio, TX (SAT) will usually cost between $796 to $1487 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid October with an average ticket price of $803. Due to high demand the most expensive time to fly is early August, with an average price of $1523. Planning your trip to low-cost times can easily save you $721 on economy flights and even more on first-class flights. Generally, any price below $1025 can be considered a good price for a round-trip LHR to SAT flight.

See below for a graph of average weekly prices for the LHR to SAT route. All prices are for round-trip tickets in USD.

LHR to SAT Flight Prices

Compared to other flights, the LHR to SAT flight is priced close to the average and costs slightly more than the average flight leaving from London. The average price per mile (for a direct flight) is $0.13, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to San Antonio, and Saturdays are the most expensive days to return to London. Selecting flights on the least expensive days could save you up to $70 (6%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1016. Return trip prices are from the SAT to LHR flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from LHR to SAT can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 56 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from LHR to SAT while comparing.

Destination alternative #1: Austin – Bergstrom International Airport (AUS) in Austin, TX

  • 66 miles (106 km) away from SAT
  • Usually 57.15% less expensive than SAT
  • Nonstop flights available

See LHR to AUS flights

Destination alternative #2: Easterwood Field Airport (CLL) in College Station/Bryan, TX

  • 145 miles (233 km) away from SAT
  • Usually 2.10% less expensive than SAT
  • 1-layover flights available

See LHR to CLL flights


Flight Hacking LHR to SAT

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from LHR to SAT — but Champion Traveler does!

Hack #1: New York, NY (LHR > JFK > SAT)

  • Price for both tickets: $620
  • Average savings: $405 (39.48%)

See LHR to BOS flights

Hack #2: Boston, MA (LHR > BOS > SAT)

  • Price for both tickets: $649
  • Average savings: $376 (36.7%)

See LHR to JFK flights

Hack #3: New York, NY (LHR > LGA > SAT)

  • Price for both tickets: $660
  • Average savings: $365 (35.58%)

See LHR to LGA flights


Flight Questions Answered

Still have questions about flying from LHR to SAT? We’ve got answers.

Which airlines fly this route?

You can find 29 major airlines flying this route most often: Aer Lingus, Aeroflot, Aeromexico, Air Canada, Air France, Air New Zealand, Alaska, Alitalia, American, Austrian, British Airways, Brussels Airlines, Condor, Delta, Finnair, Frontier, Iberia, Icelandair, InterJet, KLM, LLC Nord Wind, LOT, Lufthansa, SAS, SWISS, Turkish Airlines, United, Virgin Atlantic, Volaris, and potentially more during busy seasons.

How far away is it from San Antonio International Airport to London Heathrow Airport?

The distance between the two airports is roughly 4969 miles or 7997 kilometers.

How long does it take to fly from LHR to SAT?

The real-world flight time for a nonstop LHR to SAT flight is about 9 hour 56 minutes.

How many flights go between London and San Antonio, TX?

It depends on the day of the week and the date, but a typical day might have around 58 available flights from LHR to SAT.


Airport Location Info


Departing Airport

Origination code LHR
Origination airport name London Heathrow Airport
City London
Country the United Kingdom
Latitude 51.5
Longitude -0.5

Return Airport

Destination code SAT
Destination airport name San Antonio International Airport
City San Antonio, TX
Country the United States
Latitude 29.5
Longitude -98.5


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.