Flights from Denver to San Antonio
North AmericaYear-round

Cheap Flights from Denver to San Antonio

Track economy fares on the DEN → SAT route and get alerts when prices drop.

From
Denver
DEN
To
San Antonio
SAT

Route Intelligence: Denver → San Antonio

Flight Duration

2 hr 20 min (Direct)

Price Guidance

A good deal is under $250 roundtrip. Standard fare is $350–$500+.

Peak Season

Jun-Aug

Top Airlines

United Airlines, Southwest Airlines

Booking Tip

Book 1-3 months in advance for the best domestic fares.

Track Denver → San Antonio Fares

Set your target price and FlightKitten will scan this route twice daily. The instant economy fares drop below your budget, you'll get an email with the price, airline, and a direct booking link.

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Route Summary: Denver → San Antonio

From
Denver (DEN)
To
San Antonio (SAT)
Duration
2 hr 20 min (Direct)
Airlines
United Airlines, Southwest Airlines
Price Guide
A good deal is under $250 roundtrip. Standard fare is $350–$500+.
Tracking
FlightKitten scans 220+ airlines 2× daily
220+
Airlines Monitored
2×
Daily Scanning
AI
Deal Briefings
7-Day
Free Trial
Premium Cabin

Prefer business class on this route?

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Also available: BestBusinessClass.com

Other Routes to San Antonio

New York→San AntonioLos Angeles→San AntonioChicago→San AntonioMiami→San AntonioSan Francisco→San AntonioBoston→San Antonio

More Destinations in North America

Anchorage
Anchorage
Atlanta
Atlanta
Austin
Austin
Boston
Boston
Charleston
Charleston
Charlotte
Charlotte

Route Briefing: Denver to San Antonio

Spanning 794 miles in 2 hours and 15 minutes, the flight from Denver to San Antonio connects Colorado with South Texas history and Mexican-American culture. United Airlines and Southwest offer daily flights into San Antonio International Airport (SAT).

San Antonio is a warm and colorful city famous for its historic landmarks and lively waterfront. Stroll along the shaded flagstone paths of the San Antonio River Walk, tour the historic Alamo and the Spanish colonial missions, and explore the artisan shops of Market Square. Head to the historic Pearl District for farm-to-table restaurants, craft beer, and weekend farmers markets, and don't miss authentic handmade puffy tacos on the West Side.

Roundtrip economy tickets under $120 are a solid deal, with standard fares running $180 to $270. Spring is especially lively during the citywide Fiesta San Antonio celebration in April. Book 3 to 5 weeks in advance for the best economy rates.

How much are flights from Denver to San Antonio in 2026?

Flight prices from Denver (DEN) to San Antonio (SAT) vary significantly depending on the season, day of the week, and how far in advance you book. A good deal is under $250 roundtrip. Standard fare is $350–$500+. Popular carriers on this route include United Airlines, Southwest Airlines. FlightKitten eliminates the guesswork by monitoring 220+ airlines twice daily and alerting you the moment economy fares hit your target price.

How does FlightKitten track Denver to San Antonio fares?

FlightKitten is an economy flight price monitoring platform that scans 220+ airlines twice every day for economy fares on the DEN to SAT route. When you set a target price, FlightKitten continuously monitors this route and sends an email alert the moment fares drop below your budget. Each alert includes the exact fare, airline, dates, and an AI-powered briefing that explains whether the deal is genuinely good compared to historical pricing on this route. No more obsessive price checking — set your budget and let FlightKitten do the watching. Learn more about how FlightKitten tracking works.

See our full San Antonio destination guide for all available routes. Also popular: Denver to Anchorage.

Pro tip: Book 1-3 months in advance for the best domestic fares.

Looking for business class on this route? CEOFLIGHTS pairs you with a Personal Travel Manager who finds affordable business class fares and handles every detail of your journey. Alternatively, BestBusinessClass.com offers free expert quotes with real savings.