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$69+ Cheap flights from Colorado to San Antonio (SAT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAT
Aug 21 — Aug 281
Thu 8/21
Thu 8/28
1 adult, Economy
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Cheap flight deals from Colorado to San Antonio

Keep the following information in mind while searching for Colorado to San Antonio flight deals. Data was last updated August 16, 2025.

Round-trip from

$112
(Cheapflightsfares)

One-way from

$69
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$197

Good round-trip deal

$137 or less

Good one-way deal

$119 or less
From Colorado to San Antonio
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One-way flight from Colorado to San Antonio
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Highest demand for flights based on searches. 17% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Colorado to San Antonio.
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Price to beat on a one-way flight from Colorado to San Antonio.
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Find flight deals from Colorado to San Antonio

Cheapest flights from Colorado to San Antonio
Explore the most affordable flight options available from Colorado to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

This Trip.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/193:45 pmDEN - SAT
Nonstop2h 15mFrontier
Sun 9/218:20 pmSAT - DEN
Nonstop2h 28mFrontier
Deal found 8/15$109
This CheapOair deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/611:11 amDEN - SAT
Nonstop2h 16mFrontier
Mon 9/82:01 pmSAT - DEN
1 stop26h 48mFrontier
Deal found 8/15$113
This Cheapflightsfares deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/304:34 pmDEN - SAT
Nonstop2h 14mFrontier
Sun 11/210:46 pmSAT - DEN
1 stop6h 13mFrontier
Deal found 8/14$116
This Frontier deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:01 pmDEN - SAT
Nonstop2h 14mFrontier
Sun 10/59:33 pmSAT - DEN
1 stop7h 27mFrontier
Deal found 8/15$118
This Cheapflightsfares deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2212:00 pmDEN - SAT
Nonstop2h 14mFrontier
Sat 10/255:32 pmSAT - DEN
Nonstop2h 21mFrontier
Deal found 8/14$121
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/114:01 pmDEN - SAT
Nonstop2h 14mFrontier
Thu 9/118:16 pmSAT - DEN
Nonstop2h 28mFrontier
Deal found 8/16$123
This FlightHub deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/310:29 pmDEN - SAT
1 stop13h 54mFrontier
Sun 9/78:20 pmSAT - DEN
Nonstop2h 28mFrontier
Deal found 8/15$125
This CheapOair deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/314:16 pmDEN - SAT
Nonstop2h 14mFrontier
Mon 11/32:04 pmSAT - DEN
1 stop14h 55mFrontier
Deal found 8/14$128
This CheapOair deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/231:42 pmDEN - SAT
1 stop26h 08mFrontier
Sun 10/2612:09 pmSAT - DEN
Nonstop2h 24mFrontier
Deal found 8/15$129
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/47:05 amDRO - SAT
1 stop4h 43mUnited Airlines
Mon 9/84:37 pmSAT - DRO
1 stop6h 38mUnited Airlines
Deal found 8/14$218
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/41:40 pmDRO - SAT
2 stops8h 08mUnited Airlines
Thu 9/114:37 pmSAT - DRO
1 stop6h 38mUnited Airlines
Deal found 8/13$224
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2112:05 pmCOS - SAT
1 stop8h 43mAmerican Airlines
Sat 11/15:00 amSAT - COS
1 stop5h 46mAmerican Airlines
Deal found 8/14$233

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado 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, Cheapflights users made 2,558,603 searches. Data last updated August 16, 2025.
Use the filters below to find and compare flights from Colorado to San Antonio that are best for you.

Fly from

Colorado

Fly to

San Antonio

Route

Depart

Return

Price

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Fri 9/19

3:45 pm-7:00 pm

Nonstop2h 15m

San Antonio

Sun 9/21

9:55 am-11:22 am

Nonstop2h 27m

$112

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Sat 9/6

11:11 am-2:27 pm

Nonstop2h 16m

San Antonio

Mon 9/8

2:01 pm-3:49 pm

1 stop26h 48m

$113

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Fri 10/24

10:29 pm-1:19 pm

1 stop13h 50m

San Antonio

Sun 10/26

12:09 pm-1:33 pm

Nonstop2h 24m

$113

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Wed 10/22

8:00 am-1:19 pm

1 stop28h 19m

San Antonio

Sat 10/25

5:32 pm-6:53 pm

Nonstop2h 21m

$113

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Sat 10/4

11:11 am-2:27 pm

Nonstop2h 16m

San Antonio

Sat 10/11

2:04 pm-7:38 pm

1 stop6h 34m

$114

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Sat 9/20

11:11 am-2:27 pm

Nonstop2h 16m

San Antonio

Sat 9/27

4:45 pm-4:00 am

1 stop12h 15m

$114

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Thu 10/30

4:34 pm-7:48 pm

Nonstop2h 14m

San Antonio

Sun 11/2

10:46 pm-3:59 am

1 stop6h 13m

$116

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Thu 10/2

4:01 pm-7:15 pm

Nonstop2h 14m

San Antonio

Sun 10/5

8:20 pm-9:48 pm

Nonstop2h 28m

$118

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Mon 10/6

4:01 pm-7:15 pm

Nonstop2h 14m

San Antonio

Fri 10/10

8:20 pm-9:43 pm

Nonstop2h 23m

$118

DenverSan Antonio

DEN - SAT

DENSAT

Denver Intl

Fri 11/7

4:16 pm-7:30 pm

Nonstop2h 14m

San Antonio

Sun 11/9

8:25 pm-9:48 pm

Nonstop2h 23m

$118

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 55 results
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Best time to book a flight from Colorado to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Colorado with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to San Antonio

What is the cheapest month to book a flight from Colorado to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Colorado to San Antonio (average of $295). Flying from Colorado to San Antonio in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CO to SAT?

Find hourly flight availability from Colorado to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to San Antonio as you normally would.

How much does it cost to fly round-trip from Colorado to San Antonio?

Related info for your journey

Find useful and relevant information for your journey from Colorado to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Antonio from Colorado?

    Located just 7.6 mi from the city center, San Antonio (SAT) is the airport most travelers will use when flying to San Antonio from Colorado.

  • How popular is this Colorado to San Antonio flight route?

    This flight path from Colorado to San Antonio was viewed by 15 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Colorado to San Antonio one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $69. Users have also found prices from $112 and $175 on Delta and American Airlines, respectively.

  • What are the most popular routes from Colorado to San Antonio?

    When deciding which route to take from Colorado to San Antonio consider Denver Intl - San Antonio, Colorado Springs - San Antonio or Durango La Plata County - San Antonio as they are the most popular.

  • What are the most reliable airlines from Colorado to San Antonio?

    Consider Air Canada (72%), Frontier (71%) or United Airlines (66%) when booking your flight. These represent the most reliable airlines when flying from Colorado to San Antonio.

  • What are the cheapest flights from Colorado to San Antonio?

    On average you can expect to pay $191 for a flight from Colorado to San Antonio. The cheapest flight overall is $59 while the most popular route, (Denver Intl - San Antonio) is currently priced at $118.

  • Can I find deals for flights from Colorado to San Antonio that include hotel bookings?

    Yes. In addition to deals on Colorado to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to San Antonio.

  • Can I find deals for business class flights from Colorado to San Antonio?

    Yes. Cheapflights offers flight deals from Colorado to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Colorado to San Antonio (average of $295). Flying from Colorado to San Antonio in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Antonio?

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

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Alternative routes for Colorado to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Colorado to San Antonio

Discover the top 4 airlines that operate flights from Colorado to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$53Average$177FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$143Average$448FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$158Average$402FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$197Average$341FlexibilityNo cancel feeOn-time63%

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