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

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On Cheapflightsplus.com you will find 17 direct and 259 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 $67 Find flight	19:50 San Antonio San Antonio	21:16 Denver Denver International	2h 26m	Frontier Airlines	F92355
from $82 Find flight	08:55 San Antonio San Antonio	10:12 Denver Denver International	2h 17m	United Airlines	UA1424
from $82 Find flight	05:15 San Antonio San Antonio	06:34 Denver Denver International	2h 19m	United Airlines	UA1399
from $82 Find flight	16:36 San Antonio San Antonio	18:08 Denver Denver International	2h 32m	United Airlines	UA624
from $91 Find flight	08:55 San Antonio San Antonio	10:12 Denver Denver International	2h 17m	United Airlines	UA2082
from $99 Find flight	13:43 San Antonio San Antonio	15:00 Denver Denver International	2h 17m	United Airlines	UA1312
from $99 Find flight	16:37 San Antonio San Antonio	18:06 Denver Denver International	2h 29m	United Airlines	UA515
from $114 Find flight	13:43 San Antonio San Antonio	15:00 Denver Denver International	2h 17m	United Airlines	UA1299
from $115 Find flight	13:42 San Antonio San Antonio	14:58 Denver Denver International	2h 16m	United Airlines	UA490
from $146 Find flight	11:15 San Antonio San Antonio	12:32 Denver Denver International	2h 17m	United Airlines	UA361
from $87 Find flight	15:56 San Antonio San Antonio	23:08 Denver Denver International	8h 12m layover 3h 11m - Las Vegas	Frontier Airlines	F93417 F94612
from $87 Find flight	10:31 San Antonio San Antonio	23:19 Denver Denver International	13h 48m layover 6h 34m - Orlando	Frontier Airlines	F91654 F93311
from $87 Find flight	10:31 San Antonio San Antonio	07:59+1 день Denver Denver International	22h 28m layover 15h 35m - Orlando	Frontier Airlines	F91654 F91733
from $112 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 $129 Find flight	16:22 San Antonio San Antonio	19:40 Denver Denver International	4h 18m layover 0h 40m - Houston	United Airlines	UA2157 UA1654

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on June 04, 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$82
05:35 — 06:54	05:35 — 06:54 UA1811 United Airlines San Antonio — Denver	2h 19m	Find flight from$128
08:55 — 10:12	08:55 — 10:12 UA1424 United Airlines San Antonio — Denver	2h 17m	Find flight from$82
08:55 — 10:12	08:55 — 10:12 UA2082 United Airlines San Antonio — Denver	2h 17m	Find flight from$91
09:00 — 10:18	09:00 — 10:18 UA2853 United Airlines San Antonio — Denver	2h 18m	Find flight from$126
09:10 — 10:27	09:10 — 10:27 UA2167 United Airlines San Antonio — Denver	2h 17m	Find flight from$147
11:15 — 12:32	11:15 — 12:32 UA361 United Airlines San Antonio — Denver	2h 17m	Find flight from$146
13:42 — 14:58	13:42 — 14:58 UA490 United Airlines San Antonio — Denver	2h 16m	Find flight from$115
13:43 — 15:00	13:43 — 15:00 UA1312 United Airlines San Antonio — Denver	2h 17m	Find flight from$99
13:43 — 15:00	13:43 — 15:00 UA1299 United Airlines San Antonio — Denver	2h 17m	Find flight from$114
13:43 — 15:00	13:43 — 15:00 UA1479 United Airlines San Antonio — Denver	2h 17m	Find flight from$115
16:36 — 18:08	16:36 — 18:08 UA624 United Airlines San Antonio — Denver	2h 32m	Find flight from$82
16:37 — 18:06	16:37 — 18:06 UA515 United Airlines San Antonio — Denver	2h 29m	Find flight from$99
16:37 — 18:07	16:37 — 18:07 UA2022 United Airlines San Antonio — Denver	2h 30m	Find flight from$128
16:51 — 18:18	16:51 — 18:18 UA1704 United Airlines San Antonio — Denver	2h 27m	Find flight from$123
19:50 — 21:16	19:50 — 21:16 F92355 Frontier Airlines San Antonio — Denver	2h 26m	Find flight from$67
20:26 — 21:49	20:26 — 21:49 F92097 Frontier Airlines San Antonio — Denver	2h 23m	Find flight from$45
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$146
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$148
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$135
10:31 — 23:19	10:42 — 14:32 F91654 Frontier Airlines San Antonio — Orlando 6h 34m stop 20:59 — 23:31 F93311 Frontier Airlines Orlando — Denver	13h 48m including layover	Find flight from$87
10:31 — 07:59 +1 day	10:42 — 14:32 F91654 Frontier Airlines San Antonio — Orlando 15h 35m stop 06:00 — 08:18 F91733 Frontier Airlines Orlando — Denver	22h 28m including layover	Find flight from$87
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$129
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$129
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$137
13:56 — 18:58	15:56 — 16:49 F93417 Frontier Airlines San Antonio — Las Vegas 1h stop 15:46 — 18:58 F93540 Frontier Airlines Las Vegas — Denver	6h 2m including layover	Find flight from$91
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$129
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$129
15:56 — 23:08	14:18 — 15:18 F93417 Frontier Airlines San Antonio — Las Vegas 3h 11m stop 20:00 — 23:10 F94612 Frontier Airlines Las Vegas — Denver	8h 12m including layover	Find flight from$87
15:56 — 04:01 +1 day	14:18 — 15:18 F93417 Frontier Airlines San Antonio — Las Vegas 8h 10m stop 00:59 — 04:00 F91994 Frontier Airlines Las Vegas — Denver	13h 5m including layover	Find flight from$91
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$135
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$129
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$112
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$129
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$112
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$131

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

*Departure and arrival times - local. Updated on June 4, 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 18m.

The fastest flight 2h 16m
Average flight time 2h 18m
The earliest flight 05:00
The latest flight 20:26
Distance 796 ml

The cheapest months to travel to Denver are august (from 60 $), june (from 64 $), may (from 72 $).

The most expensive months are december (from 543 $), february (from 421 $), september (from 175 $).

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 - 17 departures per week at the price of from $ 157 . And the most expensive tickets are offered by Hawaiian Airlines airline - from $ 778.

Direct flights

There are 17 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 $82

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Connecting Flights

There are 259 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 $87.

AS - Alaska Airlines

from $157

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F9 - Frontier Airlines

from $87

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SY - Sun Country Airlines

from $112

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HA - Hawaiian Airlines

from $150

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UA - United Airlines

from $129

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NK - Spirit Airlines

from $119

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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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