Denver to San Antonio Flight Ticket Price

Current Denver to San Antonio Flight Ticket Price by Airline

Compare fares across airlines operating the Denver–San Antonio route. Prices are indicative based on recent bookings — live fares may vary.

What Affects Denver–San Antonio Flight Ticket Prices?

Flight ticket prices on the Denver–San Antonio route change constantly. Here are the main factors that determine how much you pay:

• Advance BookingTickets booked 3–8 weeks ahead are usually 30–50% cheaper than last-minute fares.
• Day of TravelWeekday flights (Tue, Wed) cost less than weekend (Fri, Sun) departures on most routes.
• Time of DepartureEarly morning (5–8 AM) and red-eye flights cost less than peak-hour slots.
• Season & HolidaysDiwali, Christmas, school vacations, and long weekends push prices up significantly.
• Fare ClassSaver fares have restrictions (higher date change and cancellation penalty); Flexi fares cost more but allow changes at lower charges.
• Baggage Add-onsBase fare often includes checked baggage — pre-purchase extra baggage online (if required) to save vs airport rates.

On HappyFares, you can see all-in prices with taxes clearly displayed — no surprise convenience fees at checkout.

Month-by-Month Denver to San Antonio Flight Price Guide (2026)

Denver–San Antonio flight prices follow clear seasonal patterns. The cheapest months are Feb, Mar, Nov; the most expensive are Jun, Jul, Dec, Jan and major Indian holidays.

Fares are approximate advance-booking estimates (economy, one-way). Actual prices depend on airline, seat availability, and day of booking. Search live prices on HappyFares →

Denver to San Antonio Flight Time, Duration & Schedule

The nonstop Denver–San Antonio flight takes approximately 15h 32m, covering 12,500 km by air. With 3+ daily departures spread across all airlines, there are convenient slots from early morning through late evening.

• Nonstop duration: ~15h 32m (direct, no layover)
• Route distance: 12,500 km
• First departures: Typically around 5–6 AM
• Last departures: Typically around 9–10 PM
• Best on-time performance: Early morning flights (before 8 AM) depart on time most reliably

All airlines on the Denver–San Antonio route operate direct, nonstop flights — no connecting flights or layovers. When booking on HappyFares, you can filter by departure time to find the slot that suits your schedule.

How to Get the Cheapest Denver to San Antonio Flight Ticket

Best Time to Book Denver–San Antonio Flights

The sweet spot for booking Denver–San Antonio flights is 3–6 weeks before travel. Very early booking (3+ months ahead) sometimes has good fares too, especially for peak-season travel. The worst time to buy is within 7 days of departure — last-minute Denver–San Antonio fares can be 2–3× higher than advance prices.

Frequently Asked Questions — Denver to San Antonio Flight Ticket Price

Explore Denver–San Antonio Flight Options