Cheap Flights from San Antonio, TX to Denver, CO from $112

Return flight: Denver – San Antonio

On Cheapflightsplus.com you will find 4 direct and 42 connecting flights from San Antonio to Denver. You can compare airfare deals from 5 airlines and multiple travel sites from $112, book and save on cheap plane tickets and last minute offers. Also check out SAT-DEN flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip San Antonio to Denver 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: $112 (one-way), $192 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from San Antonio to Denver. 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
05:15 — 06:34
05:15 — 06:34 UA1399 United Airlines
San Antonio — Denver
2h 19m
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from$112
08:55 — 10:12
08:55 — 10:12 UA2082 United Airlines
San Antonio — Denver
2h 17m
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from$124
13:43 — 15:00
13:43 — 15:00 UA1299 United Airlines
San Antonio — Denver
2h 17m
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from$156
16:36 — 18:08
16:36 — 18:08 UA624 United Airlines
San Antonio — Denver
2h 32m
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from$112
05:30 — 11:50
05:30 — 06:36 UA469 United Airlines
San Antonio — Houston
3h 39m stop
10:15 — 11:50 UA2723 United Airlines
Houston — Denver
7h 20m
including layover
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from$214
06:00 — 12:14
06:00 — 07:42 UA784 United Airlines
San Antonio — San Francisco
53m stop
08:35 — 12:14 UA2348 United Airlines
San Francisco — Denver
7h 14m
including layover
Find flight
from$1022
06:45 — 14:46
06:45 — 09:44 UA2629 United Airlines
San Antonio — Chicago
3h 20m stop
13:04 — 14:46 UA622 United Airlines
Chicago — Denver
9h 1m
including layover
Find flight
from$263
07:00 — 23:59
07:00 — 09:24 AS495 Alaska Airlines
San Antonio — Seattle
10h 53m stop
20:17 — 23:59 AS642 Alaska Airlines
Seattle — Denver
17h 59m
including layover
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from$292
07:30 — 11:50
07:43 — 08:49 UA1486 United Airlines
San Antonio — Houston
1h 39m stop
12:50 — 14:22 UA2723 United Airlines
Houston — Denver
5h 20m
including layover
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from$249
09:56 — 16:40
09:56 — 11:02 UA1798 United Airlines
San Antonio — Houston
3h 48m stop
14:50 — 16:40 UA241 United Airlines
Houston — Denver
7h 44m
including layover
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from$200
12:13 — 16:40
12:13 — 13:21 UA6104 United Airlines
San Antonio — Houston
1h 29m stop
14:50 — 16:40 UA241 United Airlines
Houston — Denver
5h 27m
including layover
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from$200
12:55 — 20:36
12:55 — 15:53 UA1905 United Airlines
San Antonio — Chicago
2h 42m stop
18:35 — 20:36 UA767 United Airlines
Chicago — Denver
8h 41m
including layover
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from$248
16:17 — 19:59
16:17 — 17:25 UA6153 United Airlines
San Antonio — Houston
40m stop
18:05 — 19:59 UA1654 United Airlines
Houston — Denver
4h 42m
including layover
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from$214
17:20 — 23:22
17:20 — 20:25 UA5869 United Airlines
San Antonio — Chicago
1h 7m stop
21:32 — 23:22 UA1748 United Airlines
Chicago — Denver
7h 2m
including layover
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from$249
17:56 — 23:38
18:01 — 19:07 UA2170 United Airlines
San Antonio — Houston
2h 55m stop
22:05 — 23:46 UA1338 United Airlines
Houston — Denver
6h 42m
including layover
Find flight
from$186
19:37 — 11:53
+1 day
19:28 — 21:59 HA6517 Hawaiian Airlines
San Antonio — Seattle
10h 13m stop
08:18 — 12:00 HA6653 Hawaiian Airlines
Seattle — Denver
17h 16m
including layover
Find flight
from$327
19:37 — 16:54
+1 day
19:37 — 21:53 AS494 Alaska Airlines
San Antonio — Seattle
15h 20m stop
13:13 — 16:54 AS620 Alaska Airlines
Seattle — Denver
22h 17m
including layover
Find flight
from$336
14:11 — 08:49
+1 day
14:11 — 15:31 NK1274 Spirit Airlines
San Antonio — Los Angeles
8h 24m stop
23:55 — 05:36 SY430 Sun Country Airlines
Los Angeles — Minneapolis
2h stop
07:36 — 08:49 SY651 Sun Country Airlines
Minneapolis — Denver
19h 38m
including layover
Find flight
from$554
14:11 — 20:56
+1 day
14:11 — 15:31 NK1274 Spirit Airlines
San Antonio — Los Angeles
20h 44m stop
12:15 — 17:46 SY424 Sun Country Airlines
Los Angeles — Minneapolis
1h 59m stop
19:45 — 20:56 SY1609 Sun Country Airlines
Minneapolis — Denver
31h 45m
including layover
Find flight
from$565
*Departure and arrival times - local. Updated on July 30, 2025

Flight Information

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

Distance between San Antonio and Denver is 1281 miles. Time difference between the cities is 1h. Airplanes depart 05:15 to 19:37 from 5 San Antonio airports and arrive 05:15 to 19:37 to 2 Denver airports. Average flight time is 2h 18m.

  • The fastest flight 2h 17m
  • Average flight time 2h 18m
  • The earliest flight 05:15
  • The latest flight 19:37
  • Distance 796 ml

The cheapest months to travel to Denver are august (from 112 $), june (from 124 $), july (from 146 $).

The most expensive months are may (from 175 $), july (from 146 $), june (from 124 $).

What is the lowest airfare San Antonio to Denver?

The cheapest plane ticket found by our users is $112. This airfare is for economy class on one-way UA624 flight by United Airlines for August 16, 2025 which leaves San Antonio in San Antonio at 16:36 am and arrives at Denver Denver International at 18:08.

Economy class
$112
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Business class
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First class
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Popular Airlines on the Route

The flight San Antonio — Denver is served by 5 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 9 departures per week at the price of from $ 292 . And the most expensive tickets are offered by United Airlines airline - from $ 1022.

Direct flights

There are 4 nonstop flights on the route. The fastest direct flight is UA2082 by United Airlines takes 2h 17m and the cheapest is UA624 by United Airlines for $112.

  • UA - United Airlines
    from $112
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Connecting Flights

There are 42 flights with layovers on the route. The fastest connecting flight is UA6153 by United Airlines takes 4h 42m and the cheapest is UA624 by United Airlines for $186.

  • AS - Alaska Airlines
    from $292
    Find
  • F9 - Frontier Airlines
    from $326
    Find
  • HA - Hawaiian Airlines
    from $325
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  • UA - United Airlines
    from $186
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  • NK - Spirit Airlines
    from $535
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See more connecting flights

Airports

You can fly from San Antonio to Denver from 5 airports (Randolph AFB, Martindale AAF, San Antonio, Kelly AFB, Stinson Municipal).

San Antonio airports

  • Randolph AFB-RND
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  • Martindale AAF-MDA
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  • San Antonio-SAT
    from $112
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  • Kelly AFB-SKF
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  • Stinson Municipal-SSF
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Denver airports

  • Denver International-DEN
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  • Arapahoe Co-APA
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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.

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