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Cheap flights from Denver to San Antonio from $72

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to San Antonio departing on 12/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:00 am - 9:18 amDEN-SAT
2h 18mnonstop
Frontier Logo
1:51 pm - 3:56 amSAT-DEN
15h 05m1 stop
$117Frontier
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Fri, Jan 9 - Mon, Jan 12
Frontier Logo
6:00 am - 9:18 amDEN-SAT
2h 18mnonstop
Frontier Logo
1:24 pm - 3:58 amSAT-DEN
15h 34m1 stop
$121Frontier
Find Deal
Sun, Feb 8 - Mon, Feb 9
Frontier Logo
11:00 am - 2:17 pmDEN-SAT
2h 17mnonstop
Frontier Logo
2:04 pm - 3:59 amSAT-DEN
14h 55m1 stop
$122Frontier
Find Deal
Sat, Nov 15 - Mon, Nov 17
Frontier Logo
1:02 pm - 9:08 pmDEN-SAT
7h 06m1 stop
Frontier Logo
1:51 pm - 9:04 amSAT-DEN
20h 13m1 stop
$124Frontier
Find Deal
Thu, Jan 8 - Sun, Jan 11
Frontier Logo
6:00 am - 2:08 pmDEN-SAT
7h 08m1 stop
Frontier Logo
1:24 pm - 3:58 amSAT-DEN
15h 34m1 stop
$128Frontier
Find Deal
Sun, Feb 8 - Mon, Feb 9
Multiple Airlines Logo
6:30 am - 5:05 pmDEN-SAT
9h 35m1 stop
Multiple Airlines Logo
7:56 pm - 9:20 pmSAT-DEN
2h 24mnonstop
$135Multiple Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14
Multiple Airlines Logo
9:19 am - 6:42 pmDEN-SAT
8h 23m1 stop
Multiple Airlines Logo
7:00 am - 4:41 pmSAT-DEN
10h 41m1 stop
$145Multiple Airlines
Find Deal
Thu, Nov 20 - Sat, Dec 6
Delta Logo
7:05 am - 3:22 pmDEN-SAT
7h 17m1 stop
Delta Logo
6:30 am - 2:02 pmSAT-DEN
8h 32m1 stop
$177Delta
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Fri, Jan 9 - Mon, Jan 12
Southwest Logo
1:55 pm - 9:35 pmDEN-SAT
6h 40m2 stops
Southwest Logo
7:10 am - 10:05 amSAT-DEN
3h 55m1 stop
$182Southwest
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Fri, Jan 23 - Sun, Jan 25
United Airlines Logo
9:53 am - 1:09 pmDEN-SAT
2h 16mnonstop
United Airlines Logo
4:43 pm - 6:12 pmSAT-DEN
2h 29mnonstop
$187United Airlines
Find Deal
Fri, Jan 30 - Sat, Feb 7

Frontier flights from Denver to San Antonio

Our best Frontier deals on Denver to San Antonio flight tickets
Frontier
Jan 9
DEN6:00 amDenver Intl
2h 18m
SAT9:18 amSan Antonio
Jan 12
SAT1:51 pmSan Antonio
15h 05m
1 stop
DEN3:56 amDenver Intl
$117
Find similar
Frontier
Feb 8
DEN6:00 amDenver Intl
2h 18m
SAT9:18 amSan Antonio
Feb 9
SAT1:24 pmSan Antonio
15h 34m
1 stop
DEN3:58 amDenver Intl
$121
Find similar
Frontier
Nov 15
DEN11:00 amDenver Intl
2h 17m
SAT2:17 pmSan Antonio
Nov 17
SAT2:04 pmSan Antonio
14h 55m
1 stop
DEN3:59 amDenver Intl
$122
Find similar

United Airlines flights from Denver to San Antonio

Our best United Airlines deals on Denver to San Antonio flight tickets
United Airlines
Jan 30
DEN9:53 amDenver Intl
2h 16m
SAT1:09 pmSan Antonio
Feb 7
SAT4:43 pmSan Antonio
2h 29m
DEN6:12 pmDenver Intl
$187
Find similar
United Airlines
Nov 13
DEN7:13 pmDenver Intl
2h 14m
SAT10:27 pmSan Antonio
Nov 17
SAT4:30 pmSan Antonio
2h 22m
DEN5:52 pmDenver Intl
$332
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from Denver to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Fri 1/9

6:00 am-9:18 am

Nonstop2h 18m

San Antonio

Mon 1/12

1:51 pm-3:56 am

1 stop15h 05m

$117

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Sun 2/8

6:00 am-9:18 am

Nonstop2h 18m

San Antonio

Mon 2/9

1:24 pm-3:58 am

1 stop15h 34m

$121

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Sat 11/15

11:00 am-2:17 pm

Nonstop2h 17m

San Antonio

Mon 11/17

2:04 pm-3:59 am

1 stop14h 55m

$122

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Thu 1/8

1:02 pm-9:08 pm

1 stop7h 06m

San Antonio

Sun 1/11

1:51 pm-9:04 am

1 stop20h 13m

$124

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Sun 2/8

6:00 am-2:08 pm

1 stop7h 08m

San Antonio

Mon 2/9

1:24 pm-3:58 am

1 stop15h 34m

$128

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Wed 12/10

6:30 am-5:05 pm

1 stop9h 35m

San Antonio

Sun 12/14

7:56 pm-9:20 pm

Nonstop2h 24m

$135

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Thu 11/20

9:19 am-6:42 pm

1 stop8h 23m

San Antonio

Sat 12/6

7:00 am-4:41 pm

1 stop10h 41m

$145

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Fri 1/9

7:05 am-3:22 pm

1 stop7h 17m

San Antonio

Mon 1/12

6:30 am-2:02 pm

1 stop8h 32m

$177

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Fri 1/23

1:55 pm-9:35 pm

2 stops6h 40m

San Antonio

Sun 1/25

7:10 am-10:05 am

1 stop3h 55m

$182

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Fri 1/30

9:53 am-1:09 pm

Nonstop2h 16m

San Antonio

Sat 2/7

4:43 pm-6:12 pm

Nonstop2h 29m

$187

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Antonio from

How to get the cheapest flight ticket from Denver to San Antonio

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of September, then book flights to San Antonio from Denver during July instead. Flights to San Antonio in July, while not as cheap as those in September, still average around $197.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Saturday when prices can be found for as low as $205. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Friday is $286.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is in the afternoon. momondo users have found flights departing from Denver to San Antonio in the afternoon for as low as $204. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the evening, with an average ticket price of $281. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Denver Intl to San Antonio flight route?

Fly from Denver Intl to San Antonio for the best Denver Intl - San Antonio flight prices

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $227 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Denver for as low as $124 on momondo.

What cabin class options are available on Denver Intl to San Antonio flights?

There are 4 cabin classes available to choose from on Denver Intl to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Denver to San Antonio flight prices changed over time?

As of November 2025, prices for Denver to San Antonio flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from Denver to San Antonio

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to San Antonio according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to San Antonio (DEN to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to San Antonio

Best Price Found

$95

Fastest flight time

2h 05m

Direct flights

Every day

Airports in San Antonio

1 airport
The best one-way flight to San Antonio from Denver in the past 72 hours is $95. The best round-trip flight deal from Denver to San Antonio found on momondo in the last 72 hours is $189.
The fastest flight from Denver to San Antonio takes 2h 05m
Direct flights go from Denver to San Antonio every day.
There is 1 airport near San Antonio: San Antonio (SAT)
Search flight deals

  • How far is Denver Intl to San Antonio by plane?

    San Antonio is 801.5 mi away from Denver Intl. Typically, this will take 2h 14m by plane in normal conditions.

  • When did momondo last update prices for flights from Denver Intl Airport to San Antonio Airport?

    Prices for flights from Denver Intl Airport to San Antonio Airport were last updated today.

  • How many operators does momondo search for flights from Denver Intl Airport to San Antonio Airport?

  • How old do you have to be to fly from Denver Intl Airport to San Antonio Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Denver Intl Airport to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The required travel and health documents for your San Antonio Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Antonio Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Denver to San Antonio?

  • What is the most popular airline from Denver to San Antonio?

Best airlines flying from Denver to San Antonio

Compare and see reviews for airlines that fly from Denver to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $74Free CancellationRating
5.8
3,117 reviews
Search Frontier flights
United AirlinesPriceFrom $156Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights
SouthwestPriceFrom $197Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
American AirlinesPriceFrom $216Free CancellationRating
7.2
11,036 reviews
Search American Airlines flights

  • Southwest Flights From Denver to San Antonio

    Southwest flies from Denver to San Antonio around 21 times per week, with 4,238 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Denver to San Antonio in the last 72 hours was $197 (round-trip), much lower than the average airfare cost of $304 for Southwest flights on this route.

  • United Airlines Flights From Denver to San Antonio

    Across 8,997 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from Denver to San Antonio about 18 times each week, with ticket deals ranging from $156 to $338. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Boerne
Kerrville
Schertz
Pleasanton

Why use momondo?

Why should I use momondo to find a flight deal from Denver to San Antonio?

Finding the right flight to San Antonio from Denver is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Antonio quick and easy, saving you time and money.

Can I find flights from Denver to San Antonio with flexible booking policies on momondo?

All flight searches from Denver to San Antonio on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Denver to San Antonio?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Antonio from Denver.

I’m not ready to book a flight from Denver to San Antonio right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Antonio, momondo offers a useful price alert feature which will track prices for flights to San Antonio from Denver and alert you when they change.

An easier way to manage your San Antonio trip

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