Direct (nonstop) flights from Houston to San Antonio
1 airline flys nonstop from George Bush Intcntl Houston (IAH) to San Antonio International (SAT). It's 191 miles (307 km), about 1h 8m in the air. Operated by United Airlines.
United Airlines
Route data last updated: May 29, 2026
Airlines with non-stop flights
Alternative Routes
Other ways to fly from Houston to San Antonio with one stop · direct emits 35 kg CO₂ per passenger
Looking for the return flight?
SAT → IAH: Flights from San Antonio to HoustonOther direct flights from Houston
Direct flights from San Antonio (SAT)
Frequently Asked Questions
How long is the direct flight from Houston to San Antonio?
A nonstop flight from Houston (IAH) to San Antonio (SAT) takes approximately 1 hours and 8 minutes. The distance is 191 miles (307 km).
Which airlines fly nonstop from Houston to San Antonio?
Just United Airlines.
Is there a nonstop flight from Houston to San Antonio?
Yes. 1 airline: United Airlines.
How far is Houston from San Antonio?
The flight distance from Houston to San Antonio is 191 miles (307 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Washington DC.
What type of aircraft flies from Houston to San Antonio?
At 1h 8m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Houston to San Antonio?
Roughly 35 kg CO2 per passenger one-way. That's about the same as driving 175 km.
Is the return flight from San Antonio to Houston also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Houston to San Antonio?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at George Bush Intcntl Houston for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.