What is the cheapest airline that flies from Colorado to San Antonio?

Frontier, Southwest, and American Airlines are the most popular carriers operating from Colorado to San Antonio

How many flights depart from Colorado to San Antonio on average per week?

As of November 2025, there are 70 flights per week flying from Colorado to San Antonio. The most common day of the week flights depart is Thu, with 17% of flights taking off on this day.

How many flights depart from Colorado to San Antonio on average per day?

As of November 2025, 10 flights take off from Colorado and land in San Antonio each day. The most common flight departure time for this route is 9:00AM, with 42% of daily flights taking off in the afternoon.

How long does it take to fly to San Antonio?

Flight times vary depending on what airport in Colorado you fly out of and what airport in San Antonio you fly into. For example, flying from Denver to Austin takes 2h 03m on average. On the other hand, flying from Colorado Springs to Austin takes 3h 45m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What airlines fly to San Antonio?

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to San Antonio from Colorado according to our data. Frontier is the first choice among our users, with 45% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 5 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Colorado to San Antonio Airport?

Prices for flights from Colorado to San Antonio Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Colorado to San Antonio Airport?

As of November 2025, there are 4 operators available to choose from for flights from Colorado to San Antonio Airport.

How old do you have to be to fly from Colorado to San Antonio Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to San Antonio Airport.

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

The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$68 Cheap Flights from Colorado to San Antonio in 2025/26

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:08 am - 2:28 pmDEN-SAT

2h 20mnonstop

7:00 am - 8:24 amSAT-DEN

2h 24mnonstop

$112Frontier

Find Deal

Thu, Nov 20 - Sun, Nov 23

11:08 am - 2:28 pmDEN-SAT

2h 20mnonstop

7:00 am - 8:24 amSAT-DEN

2h 24mnonstop

$113Frontier

Find Deal

Thu, Nov 20 - Sun, Nov 23

7:55 pm - 11:05 pmDEN-SAT

2h 10mnonstop

6:30 pm - 7:50 pmSAT-DEN

2h 20mnonstop

$117Southwest

Find Deal

Fri, Feb 13 - Tue, Feb 17

5:01 pm - 1:00 pmDEN-SAT

18h 59m1 stop

7:56 pm - 9:20 pmSAT-DEN

2h 24mnonstop

$125Multiple Airlines

Find Deal

Wed, Dec 3 - Sun, Dec 7

6:00 am - 11:26 pmDEN-SAT

16h 26m2 stops

10:13 am - 11:37 amSAT-DEN

2h 24mnonstop

$134Multiple Airlines

Find Deal

Thu, Dec 11 - Thu, Jan 15

12:30 am - 10:22 amDEN-SAT

8h 52m1 stop

6:30 am - 2:02 pmSAT-DEN

8h 32m1 stop

$177Delta

Find Deal

Fri, Jan 30 - Mon, Feb 2

12:36 pm - 10:00 pmCOS-SAT

8h 24m1 stop

11:28 am - 5:35 pmSAT-COS

7h 07m1 stop

$179American Airlines

Find Deal

Thu, Dec 11 - Sat, Dec 13

4:34 pm - 11:50 pmDRO-SAT

6h 16m1 stop

6:00 am - 11:17 amSAT-DRO

6h 17m1 stop

$220American Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

8:10 am - 5:10 pmCOS-SAT

8h 00m1 stop

12:46 pm - 5:19 pmSAT-COS

5h 33m1 stop

$304Delta

Find Deal

Wed, Dec 3 - Thu, Dec 4

4:55 pm - 9:55 pmCOS-SAT

4h 00m1 stop

6:00 am - 12:50 pmSAT-COS

7h 50m2 stops

$330Southwest

Find Deal

Thu, Dec 11 - Sat, Dec 13

Southwest flights from Colorado to San Antonio

Our best Southwest deals on Colorado to San Antonio flight tickets

Southwest

Feb 13

DEN7:55 pmDenver Intl

2h 10m

SAT11:05 pmSan Antonio

Feb 17

SAT6:30 pmSan Antonio

2h 20m

DEN7:50 pmDenver Intl

$117

Find similar

Southwest

Dec 11

COS4:55 pmColorado Springs

4h 00m

1 stop

SAT9:55 pmSan Antonio

Dec 13

SAT6:00 amSan Antonio

7h 50m

2 stops

COS12:50 pmColorado Springs

$330

Find similar

Southwest

Dec 30

COS6:00 amColorado Springs

6h 05m

1 stop

SAT1:05 pmSan Antonio

Jan 1

SAT1:45 pmSan Antonio

7h 40m

1 stop

COS8:25 pmColorado Springs

$342

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United Airlines flights from Colorado to San Antonio

Our best United Airlines deals on Colorado to San Antonio flight tickets

United Airlines

Nov 19

GJT11:21 amGrand Junction Regnl

4h 37m

1 stop

SAT4:58 pmSan Antonio

Nov 23

SAT4:40 pmSan Antonio

6h 18m

1 stop

GJT9:58 pmGrand Junction Regnl

$226

Find similar

United Airlines

Nov 19

GJT1:35 pmGrand Junction Regnl

8h 21m

2 stops

SAT10:56 pmSan Antonio

Nov 23

SAT4:40 pmSan Antonio

6h 18m

1 stop

GJT9:58 pmGrand Junction Regnl

$231

Find similar

United Airlines

Nov 13

DRO5:15 amDurango La Plata County

9h 14m

2 stops

SAT3:29 pmSan Antonio

Nov 17

SAT4:30 pmSan Antonio

6h 31m

1 stop

DRO10:01 pmDurango La Plata County

$240

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Thu 11/20

11:08 am-2:28 pm

Nonstop2h 20m

San Antonio

Sun 11/23

7:00 am-8:24 am

Nonstop2h 24m

$112

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Thu 11/20

11:08 am-2:28 pm

Nonstop2h 20m

San Antonio

Sun 11/23

7:00 am-8:24 am

Nonstop2h 24m

$113

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Fri 2/13

7:55 pm-11:05 pm

Nonstop2h 10m

San Antonio

Tue 2/17

6:30 pm-7:50 pm

Nonstop2h 20m

$117

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Wed 12/3

5:01 pm-1:00 pm

1 stop18h 59m

San Antonio

Sun 12/7

7:56 pm-9:20 pm

Nonstop2h 24m

$125

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Thu 12/11

6:00 am-11:26 pm

2 stops16h 26m

San Antonio

Thu 1/15

10:13 am-11:37 am

Nonstop2h 24m

$134

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Fri 1/30

12:30 am-10:22 am

1 stop8h 52m

San Antonio

Mon 2/2

6:30 am-2:02 pm

1 stop8h 32m

$177

Colorado SpringsSan Antonio

COS - SAT

COSSAT

Colorado Springs

Thu 12/11

12:36 pm-10:00 pm

1 stop8h 24m

San Antonio

Sat 12/13

11:28 am-5:35 pm

1 stop7h 07m

$179

DurangoSan Antonio

DRO - SAT

DROSAT

Durango La Plata County

Thu 11/20

4:34 pm-11:50 pm

1 stop6h 16m

San Antonio

Mon 11/24

6:00 am-11:17 am

1 stop6h 17m

$220

Colorado SpringsSan Antonio

COS - SAT

COSSAT

Colorado Springs

Wed 12/3

8:10 am-5:10 pm

1 stop8h 00m

San Antonio

Thu 12/4

12:46 pm-5:19 pm

1 stop5h 33m

$304

Colorado SpringsSan Antonio

COS - SAT

COSSAT

Colorado Springs

Thu 12/11

4:55 pm-9:55 pm

1 stop4h 00m

San Antonio

Sat 12/13

6:00 am-12:50 pm

2 stops7h 50m

$330

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How to get the cheapest flight ticket from Colorado 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

Prices

Airlines

Other information

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 Colorado 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 $206. 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 Colorado 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 Colorado to San Antonio flight route?

Fly from Denver Intl to San Antonio for the best Colorado - 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 Colorado 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 Colorado for as low as $124 on momondo.

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

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

Can stopping save me money on Colorado to San Antonio flights?

No. A direct flight is the cheapest option for a flight between Colorado to San Antonio.

Cheap Colorado to San Antonio flight deals and tips

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

Best Price Found	$95
Fastest flight time	1h 55m
Direct flights	Every day
Airports in San Antonio	1 airport

The best one-way flight to San Antonio from Colorado in the past 72 hours is $95. The best round-trip flight deal from Colorado to San Antonio found on momondo in the last 72 hours is $189.

The fastest flight from Colorado to San Antonio takes 1h 55m

Direct flights go from Colorado to San Antonio every day.

There is 1 airport near San Antonio: San Antonio (SAT)

Search flight deals

When did momondo last update prices for flights from Colorado to San Antonio Airport?
Prices for flights from Colorado to San Antonio Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to San Antonio Airport?
As of November 2025, there are 4 operators available to choose from for flights from Colorado to San Antonio Airport.
How old do you have to be to fly from Colorado to San Antonio Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Colorado to San Antonio?
momondo data reveals that the most frequently booked plane model on the route from Colorado to San Antonio is Boeing 737 MAX 8, representing 15.75% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 13.00%, Boeing 737-800 at 12.07%, and Boeing 737-700 Passenger/BBJ1 (winglets) at 11.04%.

Best airlines flying from Colorado to San Antonio

Compare and see reviews for airlines that fly from Colorado to San Antonio with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $74	Free Cancellation	Rating 5.8 3,116 reviews	Search Frontier flights
United Airlines	PriceFrom $156	Free Cancellation	Rating 7.4 9,003 reviews	Search United Airlines flights
Southwest	PriceFrom $197	Free Cancellation	Rating 8.0 4,240 reviews	Search Southwest flights
American Airlines	PriceFrom $216	Free Cancellation	Rating 7.2 11,041 reviews	Search American Airlines flights

New Braunfels

Boerne

Kerrville

Schertz

Pleasanton

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Colorado to San Antonio for you.

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

Yes. momondo enables you to select and highlight flights to San Antonio from Colorado with this policy.

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

momondo helps you find the best flight between Colorado and San Antonio by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Colorado to San Antonio now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Antonio and let you know when they change.

An easier way to manage your San Antonio trip

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Cheap flights from Colorado to San Antonio from $68

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to San Antonio departing on 12/12. 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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United Airlines flights from Colorado to San Antonio

Our best United Airlines deals on Colorado to San Antonio flight tickets

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How to get the cheapest flight ticket from Colorado 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 Colorado 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?

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

What is the cheapest Colorado to San Antonio flight route?

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

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

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

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

Can stopping save me money on Colorado to San Antonio flights?

No. A direct flight is the cheapest option for a flight between Colorado to San Antonio.

What is the cheapest airline that flies from Colorado to San Antonio?

Frontier, Southwest, and American Airlines are the most popular carriers operating from Colorado to San Antonio

What airlines fly to San Antonio?

How many flights depart from Colorado to San Antonio on average per day?

As of November 2025, 10 flights take off from Colorado and land in San Antonio each day. The most common flight departure time for this route is 9:00AM, with 42% of daily flights taking off in the afternoon.

How many flights depart from Colorado to San Antonio on average per week?

As of November 2025, there are 70 flights per week flying from Colorado to San Antonio. The most common day of the week flights depart is Thu, with 17% of flights taking off on this day.

How long does it take to fly to San Antonio?

Cheap Colorado to San Antonio flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in San Antonio

When did momondo last update prices for flights from Colorado to San Antonio Airport?

How many operators does momondo search for flights from Colorado to San Antonio Airport?

How old do you have to be to fly from Colorado to San Antonio Airport?

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

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

Best airlines flying from Colorado to San Antonio

Compare and see reviews for airlines that fly from Colorado to San Antonio with momondo

Traveling to a place near San Antonio?

Why use momondo?

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

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

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

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

An easier way to manage your San Antonio trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Texas