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

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

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 05m on average. On the other hand, flying from Colorado Springs to Austin takes 3h 55m 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.

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

As of September 2025, there are 70 flights per week flying from Colorado to San Antonio. The most common day of the week flights depart is Fri, with 19% of flights taking off on this day.

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

As of September 2025, 10 flights take off from Colorado and land in San Antonio each day. The most common flight departure time for this route is 5:00PM, with 60% of daily flights taking off in the afternoon.

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 September 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.

$42 Cheap Flights from Colorado to San Antonio in 2025/26

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Find the cheapest flights from Colorado to San Antonio

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:00 am - 11:14 amDEN-SAT

2h 14mnonstop

8:26 pm - 9:49 pmSAT-DEN

2h 23mnonstop

$90Frontier

Find Deal

Thu, Oct 16 - Fri, Oct 24

8:00 am - 11:14 amDEN-SAT

2h 14mnonstop

8:26 pm - 9:49 pmSAT-DEN

2h 23mnonstop

$92Frontier

Find Deal

Thu, Oct 16 - Thu, Oct 23

1:22 pm - 4:37 pmDEN-SAT

2h 15mnonstop

7:00 am - 11:10 pmSAT-DEN

17h 10m1 stop

$149Multiple Airlines

Find Deal

Sat, Oct 18 - Wed, Oct 22

1:22 pm - 4:37 pmDEN-SAT

2h 15mnonstop

7:00 am - 11:10 pmSAT-DEN

17h 10m1 stop

$151Multiple Airlines

Find Deal

Sat, Oct 18 - Wed, Oct 22

6:02 am - 5:45 pmCOS-SAT

10h 43m1 stop

5:00 am - 11:34 amSAT-COS

7h 34m1 stop

$243American Airlines

Find Deal

Wed, Oct 22 - Mon, Oct 27

3:18 pm - 8:55 pmGJT-SAT

4h 37m1 stop

4:30 pm - 8:30 pmSAT-GJT

5h 00m1 stop

$249United Airlines

Find Deal

Sat, Oct 25 - Mon, Nov 3

5:00 am - 2:06 pmGJT-SAT

8h 06m2 stops

2:58 pm - 9:39 pmSAT-GJT

7h 41m1 stop

$254American Airlines

Find Deal

Sat, Oct 18 - Wed, Oct 22

5:49 pm - 12:31 amCOS-SAT

5h 42m1 stop

6:07 pm - 10:10 pmSAT-COS

5h 03m1 stop

$257Delta

Find Deal

Tue, Oct 14 - Tue, Oct 21

3:18 pm - 8:55 pmGJT-SAT

4h 37m1 stop

4:39 pm - 10:11 pmSAT-GJT

6h 32m1 stop

$269United Airlines

Find Deal

Thu, Oct 2 - Mon, Oct 6

5:49 pm - 12:31 amCOS-SAT

5h 42m1 stop

6:41 am - 12:11 pmSAT-COS

6h 30m1 stop

$272Delta

Find Deal

Thu, Oct 16 - Tue, Oct 21

Frontier flights from Colorado to San Antonio

Our best Frontier deals on Colorado to San Antonio flight tickets

Frontier

Oct 16

DEN8:00 amDenver Intl

2h 14m

SAT11:14 amSan Antonio

Oct 24

SAT8:26 pmSan Antonio

2h 23m

DEN9:49 pmDenver Intl

$90

Find similar

Frontier

Oct 16

DEN8:00 amDenver Intl

2h 14m

SAT11:14 amSan Antonio

Oct 23

SAT8:26 pmSan Antonio

2h 23m

DEN9:49 pmDenver Intl

$92

Find similar

Frontier

Oct 16

DEN8:00 amDenver Intl

2h 14m

SAT11:14 amSan Antonio

Oct 25

SAT5:32 pmSan Antonio

2h 21m

DEN6:53 pmDenver Intl

$97

Find similar

American Airlines flights from Colorado to San Antonio

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

American Airlines

Oct 22

COS6:02 amColorado Springs

10h 43m

1 stop

SAT5:45 pmSan Antonio

Oct 27

SAT5:00 amSan Antonio

7h 34m

1 stop

COS11:34 amColorado Springs

$243

Find similar

American Airlines

Oct 18

GJT5:00 amGrand Junction Regnl

8h 06m

2 stops

SAT2:06 pmSan Antonio

Oct 22

SAT2:58 pmSan Antonio

7h 41m

1 stop

GJT9:39 pmGrand Junction Regnl

$254

Find similar

American Airlines

Oct 31

COS12:04 pmColorado Springs

19h 15m

1 stop

SAT8:19 amSan Antonio

Nov 3

SAT9:14 amSan Antonio

9h 52m

1 stop

COS6:06 pmColorado Springs

$265

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Thu 10/16

8:00 am-11:14 am

Nonstop2h 14m

San Antonio

Fri 10/24

8:26 pm-9:49 pm

Nonstop2h 23m

$90

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Thu 10/16

8:00 am-11:14 am

Nonstop2h 14m

San Antonio

Thu 10/23

8:26 pm-9:49 pm

Nonstop2h 23m

$92

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Sat 10/18

1:22 pm-4:37 pm

Nonstop2h 15m

San Antonio

Wed 10/22

7:00 am-11:10 pm

1 stop17h 10m

$149

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Sat 10/18

1:22 pm-4:37 pm

Nonstop2h 15m

San Antonio

Wed 10/22

7:00 am-11:10 pm

1 stop17h 10m

$151

Colorado SpringsSan Antonio

COS - SAT

COSSAT

Colorado Springs

Wed 10/22

6:02 am-5:45 pm

1 stop10h 43m

San Antonio

Mon 10/27

5:00 am-11:34 am

1 stop7h 34m

$243

Grand JunctionSan Antonio

GJT - SAT

GJTSAT

Grand Junction Regnl

Sat 10/25

3:18 pm-8:55 pm

1 stop4h 37m

San Antonio

Mon 11/3

4:30 pm-8:30 pm

1 stop5h 00m

$249

Grand JunctionSan Antonio

GJT - SAT

GJTSAT

Grand Junction Regnl

Sat 10/18

5:00 am-2:06 pm

2 stops8h 06m

San Antonio

Wed 10/22

2:58 pm-9:39 pm

1 stop7h 41m

$254

Colorado SpringsSan Antonio

COS - SAT

COSSAT

Colorado Springs

Tue 10/14

5:49 pm-12:31 am

1 stop5h 42m

San Antonio

Tue 10/21

6:07 pm-10:10 pm

1 stop5h 03m

$257

Grand JunctionSan Antonio

GJT - SAT

GJTSAT

Grand Junction Regnl

Thu 10/2

3:18 pm-8:55 pm

1 stop4h 37m

San Antonio

Mon 10/6

4:39 pm-10:11 pm

1 stop6h 32m

$269

Colorado SpringsSan Antonio

COS - SAT

COSSAT

Colorado Springs

Thu 10/16

5:49 pm-12:31 am

1 stop5h 42m

San Antonio

Tue 10/21

6:41 am-12:11 pm

1 stop6h 30m

$272

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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 October instead. Flights to San Antonio in October, while not as cheap as those in September, still average around $177.

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 $197. 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 Monday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Monday is $279.

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 $202. 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 $271. 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 $141 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	$104
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 $104. The best round-trip flight deal from Colorado to San Antonio found on momondo in the last 72 hours is $134.

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 September 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 16.03% of all bookings. The subsequent popular models are Boeing 737-800 at 15.21%, Airbus A320-100/200 at 14.13%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 12.41%.

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 $60	Free Cancellation	Rating 5.8 3,171 reviews	Search Frontier flights
United Airlines	PriceFrom $146	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
American Airlines	PriceFrom $158	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $197	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights

New Braunfels

Kerrville

Boerne

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

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.

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Cheap flights from Colorado to San Antonio from $42

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 10/16. 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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Find the cheapest flights from Colorado to San Antonio

Cheap round-trip flights

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Cheap last minute flights

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Frontier flights from Colorado to San Antonio

Our best Frontier deals on Colorado to San Antonio flight tickets

American Airlines flights from Colorado to San Antonio

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

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Use the filters below to find and compare flights from Colorado to San Antonio that are best for you.

See travel insights to San Antonio from

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 October instead. Flights to San Antonio in October, while not as cheap as those in September, still average around $177.

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, American Airlines, and Delta 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 September 2025, 10 flights take off from Colorado and land in San Antonio each day. The most common flight departure time for this route is 5:00PM, with 60% of daily flights taking off in the afternoon.

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

As of September 2025, there are 70 flights per week flying from Colorado to San Antonio. The most common day of the week flights depart is Fri, with 19% 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