Direct (nonstop) flights from San Diego to San Antonio
1 airline flys nonstop from San Diego International Airport (SAN) to San Antonio International (SAT). It's 1,130 miles (1,818 km), about 2h 45m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 27, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from San Diego to San Antonio with one stop · direct emits 191 kg CO₂ per passenger
Looking for the return flight?
SAT → SAN: Flights from San Antonio to San DiegoOther direct flights from San Diego
Direct flights from San Antonio (SAT)
Frequently Asked Questions
How long is the direct flight from San Diego to San Antonio?
A nonstop flight from San Diego (SAN) to San Antonio (SAT) takes approximately 2 hours and 45 minutes. The distance is 1,130 miles (1,818 km).
Which airlines fly nonstop from San Diego to San Antonio?
Just Southwest Airlines.
Is there a nonstop flight from San Diego to San Antonio?
Yes. 1 airline: Southwest Airlines.
How far is San Diego from San Antonio?
The flight distance from San Diego to San Antonio is 1,130 miles (1,818 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Miami.
What type of aircraft flies from San Diego to San Antonio?
At 2h 45m, 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 San Diego to San Antonio?
Roughly 191 kg CO2 per passenger one-way. That's about the same as driving 955 km.
Is the return flight from San Antonio to San Diego 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 Diego 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 San Diego International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.