Direct (nonstop) flights from Seattle to San Antonio
1 airline flys nonstop from Seattle Tacoma International (SEA) to San Antonio International (SAT). It's 1,774 miles (2,855 km), about 4h 5m in the air. Operated by Alaska Airlines.
Alaska Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
AS
Alaska Airlines
Alternative Routes
Other ways to fly from Seattle to San Antonio with one stop · direct emits 300 kg CO₂ per passenger
Looking for the return flight?
SAT → SEA: Flights from San Antonio to SeattleOther direct flights from Seattle
Direct flights from San Antonio (SAT)
Frequently Asked Questions
How long is the direct flight from Seattle to San Antonio?
A nonstop flight from Seattle (SEA) to San Antonio (SAT) takes approximately 4 hours and 5 minutes. The distance is 1,774 miles (2,855 km).
Which airlines fly nonstop from Seattle to San Antonio?
Just Alaska Airlines.
Is there a nonstop flight from Seattle to San Antonio?
Yes. 1 airline: Alaska Airlines.
How far is Seattle from San Antonio?
The flight distance from Seattle to San Antonio is 1,774 miles (2,855 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Seattle to San Antonio?
At 4h 5m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Seattle to San Antonio?
Roughly 300 kg CO2 per passenger one-way. That's about the same as driving 1,500 km.
Is the return flight from San Antonio to Seattle 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 Seattle 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 Seattle Tacoma International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.