Cheap Flights from Denver, CO to San Antonio, TX from $58

Return flight: San Antonio – Denver

On Cheapflightsplus.com you will find 12 direct and 315 connecting flights from Denver to San Antonio. You can compare airfare deals from 6 airlines and multiple travel sites from $58, book and save on cheap plane tickets and last minute offers. Also check out DEN-SAT flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Denver to San Antonio Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $58 (one-way), $99 (round-trip).
Direct flights
  • Check to choose departure date Check to choose departure date
Check prices for return flight
Find flights
Full flight schedule will help you in detecting at what time planes fly from Denver to San Antonio. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
00:23 — 09:30
00:20 — 06:03 F91734 Frontier Airlines
Denver — Orlando
1h 30m stop
07:40 — 09:47 F91653 Frontier Airlines
Orlando — San Antonio
8h 7m
including layover
Find flight
from$87
00:59 — 11:42
00:59 — 06:10 F93294 Frontier Airlines
Denver — Atlanta
3h 55m stop
10:05 — 11:42 F94809 Frontier Airlines
Atlanta — San Antonio
9h 43m
including layover
Find flight
from$95
09:35 — 12:43
09:35 — 12:43 UA2063 United Airlines
Denver — San Antonio
2h 8m
Find flight
from$110
09:40 — 12:47
09:40 — 12:47 UA1131 United Airlines
Denver — San Antonio
2h 7m
Find flight
from$104
09:40 — 12:48
09:40 — 12:48 UA1544 United Airlines
Denver — San Antonio
2h 8m
Find flight
from$125
10:43 — 14:00
10:43 — 14:00 F92356 Frontier Airlines
Denver — San Antonio
2h 17m
Find flight
from$60
13:41 — 16:51
13:41 — 16:51 UA1022 United Airlines
Denver — San Antonio
2h 10m
Find flight
from$145
13:44 — 16:54
13:44 — 16:54 UA1610 United Airlines
Denver — San Antonio
2h 10m
Find flight
from$169
16:17 — 19:31
16:17 — 19:31 F92098 Frontier Airlines
Denver — San Antonio
2h 14m
Find flight
from$58
17:45 — 20:56
17:45 — 20:56 UA1110 United Airlines
Denver — San Antonio
2h 11m
Find flight
from$130
17:55 — 21:07
17:55 — 21:07 UA1762 United Airlines
Denver — San Antonio
2h 12m
Find flight
from$158
20:24 — 13:23
+1 day
20:24 — 21:24 F94611 Frontier Airlines
Denver — Las Vegas
11h 16m stop
08:40 — 13:23 F93418 Frontier Airlines
Las Vegas — San Antonio
15h 59m
including layover
Find flight
from$100
20:35 — 23:56
20:35 — 23:56 UA1464 United Airlines
Denver — San Antonio
2h 21m
Find flight
from$161
20:43 — 23:59
20:43 — 23:59 UA1801 United Airlines
Denver — San Antonio
2h 16m
Find flight
from$104
22:29 — 13:03
+1 day
22:29 — 23:36 F9777 Frontier Airlines
Denver — Las Vegas
8h 39m stop
08:40 — 13:23 F93418 Frontier Airlines
Las Vegas — San Antonio
13h 34m
including layover
Find flight
from$100
*Departure and arrival times - local. Updated on September 15, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Denver to San Antonio depends on and how to choose the most interesting flight option for you.

Distance between Denver and San Antonio is 1281 miles. Time difference between the cities is 1h. Airplanes depart 00:23 to 23:59 from 2 Denver airports and arrive 00:23 to 23:59 to 5 San Antonio airports. Average flight time is 2h 12m.

  • The fastest flight 2h 7m
  • Average flight time 2h 12m
  • The earliest flight 00:23
  • The latest flight 23:59
  • Distance 796 ml

The cheapest months to travel to San Antonio are may (from 58 $), september (from 60 $), august (from 81 $).

The most expensive months are october (from 163 $), november (from 159 $), february (from 146 $).

What is the lowest airfare Denver to San Antonio?

The cheapest plane ticket found by our users is $58. This airfare is for economy class on one-way F92098 flight by Frontier Airlines for August 28, 2025 which leaves Denver International in Denver at 16:17 am and arrives at San Antonio San Antonio at 19:31.

Economy class
$58
Find
Business class
?
Find
First class
?
Find

Popular Airlines on the Route

The flight Denver — San Antonio is served by 6 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 32 departures per week at the price of from $ 193 . And the most expensive tickets are offered by United Airlines airline - from $ 604.

Direct flights

There are 12 nonstop flights on the route. The fastest direct flight is UA1131 by United Airlines takes 2h 7m and the cheapest is F92098 by Frontier Airlines for $58.

  • F9 - Frontier Airlines
    from $58
    Find
  • UA - United Airlines
    from $104
    Find
See more direct flights

Connecting Flights

There are 315 flights with layovers on the route. The fastest connecting flight is UA1918 by United Airlines takes 4h 9m and the cheapest is F92098 by Frontier Airlines for $87.

  • AS - Alaska Airlines
    from $193
    Find
  • F9 - Frontier Airlines
    from $87
    Find
  • SY - Sun Country Airlines
    from $142
    Find
  • HA - Hawaiian Airlines
    from $184
    Find
  • UA - United Airlines
    from $146
    Find
  • G4 - Allegiant Air
    from $170
    Find
See more connecting flights

Airports

You can fly from Denver to San Antonio from 2 airports (Denver International, Arapahoe Co).

Denver airports

  • Denver International-DEN
    from $58
    Find
  • Arapahoe Co-APA
    Find

San Antonio airports

  • Randolph AFB-RND
    Find
  • Martindale AAF-MDA
    Find
  • San Antonio-SAT
    Find
  • Kelly AFB-SKF
    Find
  • Stinson Municipal-SSF
    Find

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

Back