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Find low faresSouthwest® flights from Denver to San Antonio from $79
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Low fares from Denver to San Antonio
$
Denver (DEN)to
San Antonio (SAT)
Depart: 03/04/2026
One-way
Basic
From
$79
Seen: 17 hrs ago
Denver (DEN)to
San Antonio (SAT)
Depart: 03/07/2026
One-way
Basic
From
$79
Seen: 1 hour ago
Denver (DEN)to
San Antonio (SAT)
Depart: 03/03/2026
One-way
Basic
From
$79
Seen: 11 hrs ago
Denver (DEN)to
San Antonio (SAT)
Depart: 03/17/2026
One-way
Basic
From
$99
Seen: 9 hrs ago
Denver (DEN)to
San Antonio (SAT)
Depart: 04/07/2026
One-way
Basic
From
$99
Seen: 2 hrs ago
Denver (DEN)to
San Antonio (SAT)
Depart: 03/08/2026
One-way
Basic
From
$99
Seen: 1 hour ago
Explore flights from Denver to San Antonio
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Flight Details
Departing from:
Denver International Airport
Arriving at:
San Antonio International Airport
Average flight time:
2 hours 7 minutes
Distance:
794 miles
Route Information
156† Weekly flights
- 4‡ Nonstop flights per day Monday through Friday
- 3‡ Nonstop flights on Saturday
- 4‡ Nonstop flights on Sunday
† Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.
‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.
Questions we hear the most
The average flight time from Denver to San Antonio is 2 hours 7 minutes.
There are 156 weekly flights from Denver to San Antonio on Southwest Airlines.
Yes, Southwest flies nonstop from Denver to San Antonio 4 times per day from Monday through Friday.
Yes, Southwest flies nonstop from Denver to San Antonio 3 times per day on Saturdays and 4 times per day on Sundays.
To find the lowest fares by day and time to fly Denver to San Antonio with Southwest, check out our Low Fare Calendar.
You can rent a car at San Antonio International Airport book yours with your flight.
Yes! Flights from Denver to San Antonio—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
Check the status of your upcoming Southwest flight.
Check out the Southwest Airlines® Help Center for answers about everything Southwest.