HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Antonio

$39+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAT
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado to San Antonio with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 May 5, 2026.

This Super.com deal was found by Cheapflights users on 5/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/193:42 pm
DEN
-
SAT
Nonstop2h 17m
Frontier
Thu 5/217:54 pm
SAT
-
DEN
Nonstop2h 29m
Frontier
Deal found 5/4$108
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/113:40 pm
DEN
-
SAT
Nonstop2h 14m
Frontier
Thu 8/137:51 pm
SAT
-
DEN
Nonstop2h 35m
Frontier
Deal found 5/2$112
This Frontier deal was found by Cheapflights users on 4/30. 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.
Tue 9/13:40 pm
DEN
-
SAT
Nonstop2h 16m
Frontier
Thu 9/37:51 pm
SAT
-
DEN
Nonstop2h 34m
Frontier
Deal found 4/30$119
This Super.com deal was found by Cheapflights users on 4/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:42 pm
DEN
-
SAT
Nonstop2h 17m
Frontier
Tue 5/197:54 pm
SAT
-
DEN
Nonstop2h 29m
Frontier
Deal found 4/30$123
This Frontier deal was found by Cheapflights users on 5/1. 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.
Sat 5/163:42 pm
DEN
-
SAT
Nonstop2h 17m
Frontier
Wed 5/207:54 pm
SAT
-
DEN
Nonstop2h 29m
Frontier
Deal found 5/1$124
This Frontier deal was found by Cheapflights users on 5/3. 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.
Tue 5/193:42 pm
DEN
-
SAT
Nonstop2h 17m
Frontier
Tue 5/198:59 pm
SAT
-
DEN
1 stop7h 26m
Frontier
Deal found 5/3$125
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:40 pm
DEN
-
SAT
Nonstop2h 16m
Frontier
Mon 8/247:51 pm
SAT
-
DEN
Nonstop2h 34m
Frontier
Deal found 4/30$127
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:40 pm
DEN
-
SAT
Nonstop2h 16m
Frontier
Mon 8/317:51 pm
SAT
-
DEN
Nonstop2h 34m
Frontier
Deal found 4/30$128
This Super.com deal was found by Cheapflights users on 5/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/133:42 pm
DEN
-
SAT
Nonstop2h 17m
Frontier
Mon 5/187:54 pm
SAT
-
DEN
Nonstop2h 29m
Frontier
Deal found 5/4$143
This United Airlines deal was found by Cheapflights users on 5/4. 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.
Wed 5/2010:30 am
DRO
-
SAT
1 stop5h 27m
United Airlines
Sun 5/245:30 am
SAT
-
DRO
1 stop5h 03m
United Airlines
Deal found 5/4$260
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 5/154:58 pm
GJT
-
SAT
1 stop5h 58m
American Airlines
Tue 5/196:00 am
SAT
-
GJT
1 stop6h 16m
American Airlines
Deal found 4/30$271
This United Airlines deal was found by Cheapflights users on 4/30. 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 6/41:30 pm
DRO
-
SAT
1 stop6h 24m
United Airlines
Wed 6/105:30 am
SAT
-
DRO
1 stop5h 03m
United Airlines
Deal found 4/30$271

Find 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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$108
(Super.com)

One-way from

$39
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$192

Good round-trip deal

$157 or less

Good one-way deal

$139 or less
Provider with most accurate pricing for Denver Intl-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-San Antonio flights.
Search Deals
From Colorado to San Antonio
Search Deals
One-way flight from Colorado to San Antonio
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Colorado to San Antonio.
Search Deals
Price to beat on a one-way flight from Colorado to San Antonio.
Search Deals

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 May 5, 2026.
Use the filters below to find and compare flights from Colorado to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DurangoSan Antonio

DRO - SAT

DROSAT

Durango La Plata County

Tue 5/26

6:05 pm-11:59 pm

1 stop4h 54m

San Antonio

Sat 5/30

4:35 pm-10:00 pm

1 stop6h 25m

$260

DurangoSan Antonio

DRO - SAT

DROSAT

Durango La Plata County

Tue 6/2

6:05 pm-11:55 pm

1 stop4h 50m

San Antonio

Tue 6/9

5:30 am-9:33 am

1 stop5h 03m

$260

DurangoSan Antonio

DRO - SAT

DROSAT

Durango La Plata County

Wed 5/20

1:35 pm-10:59 pm

2 stops8h 24m

San Antonio

Sun 5/24

8:53 am-12:28 pm

1 stop4h 35m

$266

Grand JunctionSan Antonio

GJT - SAT

GJTSAT

Grand Junction Regnl

Fri 5/15

4:58 pm-11:56 pm

1 stop5h 58m

San Antonio

Tue 5/19

6:00 am-11:16 am

1 stop6h 16m

$271

Grand JunctionSan Antonio

GJT - SAT

GJTSAT

Grand Junction Regnl

Mon 6/1

6:51 pm-12:13 am

1 stop4h 22m

San Antonio

Mon 6/8

6:03 pm-9:54 pm

1 stop4h 51m

$271

Grand JunctionSan Antonio

GJT - SAT

GJTSAT

Grand Junction Regnl

Tue 5/19

5:30 am-12:56 pm

1 stop6h 26m

San Antonio

Sat 5/23

4:35 pm-8:34 pm

1 stop4h 59m

$271

DurangoSan Antonio

DRO - SAT

DROSAT

Durango La Plata County

Thu 6/4

1:30 pm-8:54 pm

1 stop6h 24m

San Antonio

Wed 6/10

5:30 am-9:33 am

1 stop5h 03m

$271

DurangoSan Antonio

DRO - SAT

DROSAT

Durango La Plata County

Thu 6/4

3:28 pm-11:55 pm

1 stop7h 27m

San Antonio

Tue 6/9

4:35 pm-8:22 pm

1 stop4h 47m

$301

Grand JunctionSan Antonio

GJT - SAT

GJTSAT

Grand Junction Regnl

Thu 9/3

1:30 pm-10:38 pm

2 stops8h 08m

San Antonio

Thu 9/10

5:30 am-8:49 am

1 stop4h 19m

$325

Colorado SpringsSan Antonio

COS - SAT

COSSAT

Colorado Springs

Thu 6/4

1:55 pm-10:31 pm

1 stop7h 36m

San Antonio

Sat 6/6

6:35 am-11:15 am

1 stop5h 40m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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

How far ahead should I book a flight from Colorado to San Antonio?

The best time to book flights from Colorado to San Antonio is 54 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Colorado to San Antonio (average of $29). Flying from Colorado to San Antonio in November is currently the most expensive (average of $70). 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 May 5, 2026.

A simple way to save on the total cost of your ticket is to fly from Colorado to San Antonio in the afternoon. If you’re flexible enough to do this you can expect to save up to 46% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Colorado to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from Colorado to San Antonio. Price data was last updated on December 6, 2025.

Travelers seeking maximum savings on their Colorado to San Antonio flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Colorado to San Antonio

Explore weekly flight availability from Colorado to San Antonio. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 5, 2026.

The most flights from USCO to SAT are scheduled on a Monday (14 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

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 26 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Colorado to San Antonio?

    A quick flight from Colorado to San Antonio can take about 4h 22m. United Airlines provides one of the quickest options available for as low as $271. Colorado and San Antonio are separated by a distance of 875 mi. This flight may include one or multiple stops.

  • 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 $42. Users have also found prices from $88 and $98 on Southwest 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 Grand Junction Regnl - San Antonio as they are the most popular.

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

    Consider Air Canada (84%), Lufthansa (82%) or United Airlines (79%) 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 $227 for a flight from Colorado to San Antonio. The cheapest flight overall is $28 while the most popular route, (Denver Intl - San Antonio) is currently priced at $200.

  • 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, January is the cheapest month in which you can book a flight from Colorado to San Antonio (average of $29). Flying from Colorado to San Antonio in November is currently the most expensive (average of $70). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Dallas/Fort Worth flights
Newark to Dallas/Fort Worth flights
John F Kennedy Intl to Dallas/Fort Worth flights
O'Hare Intl to Dallas/Fort Worth flights
Dulles Intl to Dallas/Fort Worth flights
Los Angeles to Dallas/Fort Worth flights
Atlanta to Dallas/Fort Worth flights
Baltimore to Dallas/Fort Worth flights
Baltimore to Hobby flights
Seattle to Dallas/Fort Worth flights
Newark to Hobby flights
LaGuardia to Hobby flights
Detroit to Dallas/Fort Worth flights
Midway to Dallas/Fort Worth flights
Orlando to Dallas/Fort Worth flights
Newark to George Bush Intcntl flights
Boston to Dallas/Fort Worth flights
LaGuardia to George Bush Intcntl flights
Reagan-National to Dallas/Fort Worth flights
Fort Lauderdale to Dallas/Fort Worth flights
Dulles Intl to Hobby flights
San Francisco to Dallas/Fort Worth flights
Ontario to Dallas/Fort Worth flights
O'Hare Intl to Hobby flights
Newark to Austin flights
Los Angeles to Hobby flights
Reagan-National to Hobby flights
Atlanta to Hobby flights
Miami to Hobby flights
Baltimore to George Bush Intcntl flights
Orlando to Hobby flights
John F Kennedy Intl to Hobby flights
Philadelphia to Dallas/Fort Worth flights
John F Kennedy Intl to George Bush Intcntl flights
Dulles Intl to George Bush Intcntl flights
Los Angeles to George Bush Intcntl flights
Denver to Dallas/Fort Worth flights
O'Hare Intl to George Bush Intcntl flights
Detroit to Hobby flights
Miami to Dallas/Fort Worth flights
Miami to George Bush Intcntl flights
Fort Lauderdale to Hobby flights
Atlanta to George Bush Intcntl flights
Reagan-National to George Bush Intcntl flights
Minneapolis to Dallas/Fort Worth flights
John F Kennedy Intl to Austin flights
Philadelphia to Hobby flights
Seattle to Hobby flights
Sky Harbor Intl to Dallas/Fort Worth flights
Fort Lauderdale to George Bush Intcntl flights

Top 5 airlines flying from Colorado to San Antonio

Discover the top 5 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 May 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$64Average$176FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$218FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$144Average$396FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$180Average$337FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$196Average$347FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.