Direct (nonstop) flights from San Antonio to Houston
1 airline flys nonstop from San Antonio International (SAT) to George Bush Intcntl Houston (IAH). It's 191 miles (307 km), about 1h 7m in the air. Operated by United Airlines.
United Airlines
Route data last updated: May 27, 2026
Airlines with non-stop flights
Alternative Routes
Other ways to fly from San Antonio to Houston with one stop · direct emits 35 kg CO₂ per passenger
Looking for the return flight?
IAH → SAT: Flights from Houston to San AntonioOther direct flights from San Antonio
Direct flights from Houston (IAH)
Frequently Asked Questions
How long is the direct flight from San Antonio to Houston?
A nonstop flight from San Antonio (SAT) to Houston (IAH) takes approximately 1 hours and 7 minutes. The distance is 191 miles (307 km).
Which airlines fly nonstop from San Antonio to Houston?
Just United Airlines.
Is there a nonstop flight from San Antonio to Houston?
Yes. 1 airline: United Airlines.
How far is San Antonio from Houston?
The flight distance from San Antonio to Houston 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 San Antonio to Houston?
At 1h 7m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from San Antonio to Houston?
Roughly 35 kg CO2 per passenger one-way. That's about the same as driving 175 km.
Is the return flight from Houston to San Antonio 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 San Antonio to Houston?
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 San Antonio International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.