The cheapest times to fly from IAH to SAT are

  • August 6th to November 18th
  • December 3rd to February 25th (except the week of December 17th)

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 IAH to SAT is late September. Prices can be as high as $513 for Sunday flights during early March, or as low as $237 for Tuesday flights around late September.


When to Fly to San Antonio

Flying from Houston, TX (IAH) to San Antonio, TX (SAT) will usually cost between $241 to $351 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late September with an average ticket price of $241. Due to high demand the most expensive time to fly is early March, with an average price of $344. Planning your trip to low-cost times can easily save you $103 on economy flights and even more on first-class flights. Generally, any price below $261 can be considered a good price for a round-trip IAH to SAT flight.

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

IAH to SAT Flight Prices

Compared to other flights, the IAH to SAT flight is much cheaper than the average and costs much less than the average flight leaving from Houston. The average price per mile (for a direct flight) is $0.85, which is above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to SAT, and Wednesday the cheapest day to fly back into IAH. Sundays are the most expensive days to fly to San Antonio, and Thursdays are the most expensive days to return to Houston. Selecting flights on the least expensive days could save you up to $15 (5%) 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 $265. Return trip prices are from the SAT to IAH 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 IAH to SAT can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 1 hour 19 minutes may 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 a nonstop flight from IAH to SAT while comparing.

Destination alternative #1: Victoria Regional Airport (VCT) in Victoria, TX

  • 105 miles (169 km) away from SAT
  • Usually 56.62% less expensive than SAT
  • Nonstop flights available

See IAH to VCT flights

Destination alternative #2: Austin – Bergstrom International Airport (AUS) in Austin, TX

  • 66 miles (106 km) away from SAT
  • Usually 0.38% less expensive than SAT
  • Nonstop flights available

See IAH to AUS flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 6 major airlines flying this route most often: Alaska, American, Delta, Frontier, Qantas, United, and potentially more during busy seasons.

How far away is it from San Antonio International Airport to George Bush Intercontinental/Houston Airport?

The distance between the two airports is roughly 190 miles or 306 kilometers.

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

The real-world flight time for a nonstop IAH to SAT flight is about 1 hour 19 minutes.

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

It depends on the day of the week and the date, but a typical day might have around 70 available flights from IAH to SAT.


Airport Location Info


Departing Airport

Origination codeIAH
Origination airport nameGeorge Bush Intercontinental/Houston Airport
CityHouston, TX
Countrythe United States

Return Airport

Destination codeSAT
Destination airport nameSan Antonio International Airport
CitySan Antonio, TX
Countrythe United States


Late and Early Flight Data

Flights from IAH to SAT tend to depart later than the average flight. According to our recently updated data, 33% of flights departed 5 or more minutes late, and 14% of flights left 5 or more minutes early. On average you can expect to leave SAT heading for IAH about 19 minutes late. This does significantly impact arrival time, as the average landing time in San Antonio, TX is about 18 minutes late. The numbers below show a recent average of take-off times versus the scheduled departure flight:

  • SkyWest: 19 minutes late
  • United: 22 minutes late
  • Republic: 2 minutes late
  • Mesa: 11 minutes late
  • ExpressJet: 10 minutes late
  • Some airlines not reporting


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.