Cheap Flights from San Antonio, TX to Denver, CO from $45

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On Cheapflightsplus.com you will find 13 direct and 216 connecting flights from San Antonio to Denver. You can compare airfare deals from 6 airlines and multiple travel sites from $45, 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: $45 (one-way), $77 (round-trip).

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Best Flights from San Antonio to Denver Today

Take a look at the list of non stop flights and flights with layovers from San Antonio to Denver with the lowest price of $45. The fastest direct flight takes 2h 16m and the fastest connecting – 4h 18m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $45 Find flight	20:26 San Antonio San Antonio	21:49 Denver Denver International	2h 23m	Frontier Airlines	F92097
from $84 Find flight	08:55 San Antonio San Antonio	10:12 Denver Denver International	2h 17m	United Airlines	UA1424
from $84 Find flight	05:15 San Antonio San Antonio	06:34 Denver Denver International	2h 19m	United Airlines	UA1399
from $84 Find flight	16:36 San Antonio San Antonio	18:08 Denver Denver International	2h 32m	United Airlines	UA624
from $92 Find flight	08:55 San Antonio San Antonio	10:12 Denver Denver International	2h 17m	United Airlines	UA2082
from $100 Find flight	13:43 San Antonio San Antonio	15:00 Denver Denver International	2h 17m	United Airlines	UA1312
from $100 Find flight	16:37 San Antonio San Antonio	18:06 Denver Denver International	2h 29m	United Airlines	UA515
from $116 Find flight	13:43 San Antonio San Antonio	15:00 Denver Denver International	2h 17m	United Airlines	UA1299
from $117 Find flight	13:42 San Antonio San Antonio	14:58 Denver Denver International	2h 16m	United Airlines	UA490
from $117 Find flight	13:43 San Antonio San Antonio	15:00 Denver Denver International	2h 17m	United Airlines	UA1479
from $127 Find flight	09:00 San Antonio San Antonio	10:18 Denver Denver International	2h 18m	United Airlines	UA2853
from $130 Find flight	16:37 San Antonio San Antonio	18:07 Denver Denver International	2h 30m	United Airlines	UA2022
from $148 Find flight	11:15 San Antonio San Antonio	12:32 Denver Denver International	2h 17m	United Airlines	UA361
from $114 Find flight	18:35 San Antonio San Antonio	13:17+1 день Denver Denver International	19h 42m layover 14h 47m - Minneapolis	Sun Country Airlines	SY1836 SY653
from $114 Find flight	19:15 San Antonio San Antonio	16:07+1 день Denver Denver International	21h 52m layover 17h 1m - Minneapolis	Sun Country Airlines	SY1836 SY655
from $120 Find flight	16:20 San Antonio San Antonio	18:12+1 день Denver Denver International	26h 52m layover 13h 15m - Las Vegas 6h 48m - Stockton	Spirit Airlines	NK2702 G425 G41635

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on June 24, 2025

Flight Schedule San Antonio (Texas) to Denver (Colorado)

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	Flight Details	Flight Duration	Price
05:15 — 06:34	05:15 — 06:34 UA1399 United Airlines San Antonio — Denver	2h 19m	Find flight from$84
08:55 — 10:12	08:55 — 10:12 UA1424 United Airlines San Antonio — Denver	2h 17m	Find flight from$84
08:55 — 10:12	08:55 — 10:12 UA2082 United Airlines San Antonio — Denver	2h 17m	Find flight from$92
09:00 — 10:18	09:00 — 10:18 UA2853 United Airlines San Antonio — Denver	2h 18m	Find flight from$127
11:15 — 12:32	11:15 — 12:32 UA361 United Airlines San Antonio — Denver	2h 17m	Find flight from$148
13:42 — 14:58	13:42 — 14:58 UA490 United Airlines San Antonio — Denver	2h 16m	Find flight from$117
13:43 — 15:00	13:43 — 15:00 UA1312 United Airlines San Antonio — Denver	2h 17m	Find flight from$100
13:43 — 15:00	13:43 — 15:00 UA1299 United Airlines San Antonio — Denver	2h 17m	Find flight from$116
13:43 — 15:00	13:43 — 15:00 UA1479 United Airlines San Antonio — Denver	2h 17m	Find flight from$117
16:36 — 18:08	16:36 — 18:08 UA624 United Airlines San Antonio — Denver	2h 32m	Find flight from$84
16:37 — 18:06	16:37 — 18:06 UA515 United Airlines San Antonio — Denver	2h 29m	Find flight from$100
16:37 — 18:07	16:37 — 18:07 UA2022 United Airlines San Antonio — Denver	2h 30m	Find flight from$130
20:26 — 21:49	20:26 — 21:49 F92097 Frontier Airlines San Antonio — Denver	2h 23m	Find flight from$45
05:30 — 08:54	05:15 — 06:21 UA469 United Airlines San Antonio — Houston 46m stop 07:20 — 09:00 UA2433 United Airlines Houston — Denver	4h 24m including layover	Find flight from$137
07:15 — 12:44	07:15 — 08:19 UA1486 United Airlines San Antonio — Houston 2h 51m stop 11:10 — 12:44 UA2453 United Airlines Houston — Denver	6h 29m including layover	Find flight from$148
07:15 — 12:40	07:15 — 08:19 UA1486 United Airlines San Antonio — Houston 2h 46m stop 11:05 — 12:40 UA1970 United Airlines Houston — Denver	6h 25m including layover	Find flight from$150
09:50 — 16:30	09:50 — 10:56 UA349 United Airlines San Antonio — Houston 3h 55m stop 14:51 — 16:30 UA241 United Airlines Houston — Denver	7h 40m including layover	Find flight from$137
11:45 — 16:30	11:45 — 12:49 UA1282 United Airlines San Antonio — Houston 2h 2m stop 14:51 — 16:30 UA2112 United Airlines Houston — Denver	5h 45m including layover	Find flight from$131
11:45 — 17:55	11:41 — 12:47 UA1282 United Airlines San Antonio — Houston 3h 31m stop 16:25 — 18:16 UA2338 United Airlines Houston — Denver	7h 10m including layover	Find flight from$131
12:12 — 16:40	12:12 — 13:17 UA2498 United Airlines San Antonio — Houston 1h 33m stop 14:50 — 16:40 UA241 United Airlines Houston — Denver	5h 28m including layover	Find flight from$138
14:20 — 19:40	14:15 — 15:22 UA2498 United Airlines San Antonio — Houston 2h 39m stop 18:05 — 19:59 UA1654 United Airlines Houston — Denver	6h 20m including layover	Find flight from$131
14:25 — 17:55	14:15 — 15:22 UA2498 United Airlines San Antonio — Houston 49m stop 16:25 — 18:17 UA2338 United Airlines Houston — Denver	4h 30m including layover	Find flight from$131
15:06 — 12:26 +1 day	14:18 — 15:18 F93417 Frontier Airlines San Antonio — Las Vegas 17h 16m stop 09:14 — 12:19 F92016 Frontier Airlines Las Vegas — Denver	22h 20m including layover	Find flight from$154
17:56 — 21:59	17:56 — 19:05 UA2078 United Airlines San Antonio — Houston 1h 14m stop 20:19 — 21:59 UA2215 United Airlines Houston — Denver	5h 3m including layover	Find flight from$137
17:58 — 21:59	17:58 — 19:03 UA2396 United Airlines San Antonio — Houston 1h 16m stop 20:19 — 21:59 UA536 United Airlines Houston — Denver	5h 1m including layover	Find flight from$131
18:35 — 13:17 +1 day	18:35 — 21:19 SY1836 Sun Country Airlines San Antonio — Minneapolis 14h 47m stop 12:06 — 13:17 SY653 Sun Country Airlines Minneapolis — Denver	19h 42m including layover	Find flight from$114
18:35 — 10:23 +1 day	18:35 — 21:19 SY1836 Sun Country Airlines San Antonio — Minneapolis 11h 53m stop 10:12 — 11:22 SY1609 Sun Country Airlines Minneapolis — Denver	16h 48m including layover	Find flight from$131
19:15 — 16:07 +1 day	18:35 — 21:19 SY1836 Sun Country Airlines San Antonio — Minneapolis 17h 1m stop 14:54 — 16:01 SY655 Sun Country Airlines Minneapolis — Denver	21h 52m including layover	Find flight from$114
19:15 — 23:30	19:15 — 20:20 UA2474 United Airlines San Antonio — Houston 1h 37m stop 21:57 — 23:30 UA1338 United Airlines Houston — Denver	5h 15m including layover	Find flight from$131
06:40 — 23:47	06:40 — 09:09 HA6562 Hawaiian Airlines San Antonio — Seattle 5h 50m stop 14:59 — 17:47 HA6885 Hawaiian Airlines Seattle — San Diego 2h 32m stop 20:19 — 23:47 HA6403 Hawaiian Airlines San Diego — Denver	18h 7m including layover	Find flight from$157
12:09 — 15:34 +1 day	12:09 — 15:34 NK1197 Spirit Airlines San Antonio — Atlanta 16h 31m stop 08:05 — 09:42 SY1628 Sun Country Airlines Atlanta — Minneapolis 4h 48m stop 14:30 — 15:34 SY657 Sun Country Airlines Minneapolis — Denver	28h 25m including layover	Find flight from$133

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on June 24, 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 05:00 to 20:26 from 5 San Antonio airports and arrive 05:00 to 20:26 to 2 Denver airports. Average flight time is 2h 17m.

The fastest flight 2h 16m
Average flight time 2h 17m
The earliest flight 05:00
The latest flight 20:26
Distance 796 ml

The cheapest months to travel to Denver are august (from 61 $), june (from 65 $), may (from 120 $).

The most expensive months are december (from 552 $), february (from 428 $), september (from 178 $).

What is the lowest airfare San Antonio to Denver?

The cheapest plane ticket found by our users is $45. This airfare is for economy class on one-way F92097 flight by Frontier Airlines for August 16, 2025 which leaves San Antonio in San Antonio at 20:26 am and arrives at Denver Denver International at 21:49.

Economy class

$45

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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 6 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 15 departures per week at the price of from $ 159 . And the most expensive tickets are offered by Hawaiian Airlines airline - from $ 790.

Direct flights

There are 13 nonstop flights on the route. The fastest direct flight is UA490 by United Airlines takes 2h 16m and the cheapest is F92097 by Frontier Airlines for $45.

F9 - Frontier Airlines

from $45

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UA - United Airlines

from $84

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Connecting Flights

There are 216 flights with layovers on the route. The fastest connecting flight is UA2157 by United Airlines takes 4h 18m and the cheapest is F92097 by Frontier Airlines for $114.

AS - Alaska Airlines

from $159

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F9 - Frontier Airlines

from $138

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SY - Sun Country Airlines

from $114

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HA - Hawaiian Airlines

from $152

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UA - United Airlines

from $131

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NK - Spirit Airlines

from $120

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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 $45
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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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Airplanes

There are flights to Denver from San Antonio by 6 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from San Antonio

You may also consider searching for discounted plane tickets to some other popular places from San Antonio within United States.

San Antonio — Las Vegas

from $55

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San Antonio — Dallas

from $75

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San Antonio — New York

from $74

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San Antonio — Chicago

from $73

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San Antonio — Denver

from $80

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San Antonio — Seattle

from $67

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San Antonio — Houston

from $63

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San Antonio — Miami

from $70

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San Antonio — Los Angeles

from $57

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San Antonio — Atlanta

from $60

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Top International Destinations from San Antonio

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

San Antonio — Cancun

from $79

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San Antonio — Mexico City

from $73

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San Antonio — Guadalajara

from $65

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San Antonio — Toronto

from $61

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San Antonio — Vancouver

from $75

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San Antonio — Puerto Vallarta

from $54

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San Antonio — San Juan

from $76

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How to book a plane 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.
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