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$24+ Cheap flights from San Antonio to Denver (SAT - DEN)

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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — DEN
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
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Find cheap flights from San Antonio to Denver 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

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3. Compare prices and book

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Cheapflights Tip: The best prices from San Antonio to Denver Intl are usually found in February or January, booked 76 days in advance, depart on a Thursday or Saturday and return on a Saturday

Cheap flight deals from San Antonio to Denver

Cheapest flights from San Antonio to Denver
Explore the most affordable flight options available from San Antonio to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

This Frontier deal was found by Cheapflights users on 12/7. 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.
Wed 12/316:45 amSAT - DEN
Nonstop2h 24mFrontier
Wed 12/319:00 pmDEN - SAT
Nonstop2h 17mFrontier
Deal found 12/7$160
This CheapOair deal was found by Cheapflights users on 12/6. 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.
Tue 12/232:01 pmSAT - DEN
1 stop14h 57mFrontier
Wed 12/2410:29 pmDEN - SAT
1 stop9h 54mFrontier
Deal found 12/6$163
This Frontier deal was found by Cheapflights users on 12/7. 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 12/306:45 amSAT - DEN
Nonstop2h 24mFrontier
Wed 12/319:00 pmDEN - SAT
Nonstop2h 17mFrontier
Deal found 12/7$165
This Frontier deal was found by Cheapflights users on 12/7. 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.
Wed 12/316:45 amSAT - DEN
Nonstop2h 24mFrontier
Thu 1/19:00 pmDEN - SAT
Nonstop2h 17mFrontier
Deal found 12/7$175
This Frontier deal was found by Cheapflights users on 12/8. 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 12/306:45 amSAT - DEN
Nonstop2h 24mFrontier
Thu 1/19:00 pmDEN - SAT
Nonstop2h 17mFrontier
Deal found 12/8$180
This Super.com deal was found by Cheapflights users on 12/7. 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.
Mon 12/226:45 amSAT - DEN
Nonstop2h 24mFrontier
Mon 1/58:05 amDEN - SAT
Nonstop2h 16mFrontier
Deal found 12/7$181
This Frontier deal was found by Cheapflights users on 12/7. 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.
Mon 12/157:43 pmSAT - DEN
Nonstop2h 24mFrontier
Thu 12/189:00 pmDEN - SAT
Nonstop2h 17mFrontier
Deal found 12/7$183
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Tue 12/232:01 pmSAT - DEN
1 stop20h 03mFrontier
Mon 12/2910:29 pmDEN - SAT
1 stop9h 54mFrontier
Deal found 12/7$184
This Frontier deal was found by Cheapflights users on 12/7. 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.
Mon 12/226:45 amSAT - DEN
Nonstop2h 24mFrontier
Wed 12/2410:29 pmDEN - SAT
1 stop9h 54mFrontier
Deal found 12/7$185
This Frontier deal was found by Cheapflights users on 12/7. 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 12/2510:18 amSAT - DEN
1 stop8h 21mFrontier
Wed 12/319:00 pmDEN - SAT
Nonstop2h 17mFrontier
Deal found 12/7$186
This Priceline deal was found by Cheapflights users on 12/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:01 pmSAT - DEN
1 stop10h 50mFrontier
Wed 12/2410:29 pmDEN - SAT
1 stop9h 54mFrontier
Deal found 12/7$187
This Frontier deal was found by Cheapflights users on 12/8. 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.
Fri 12/1912:18 pmSAT - DEN
Nonstop2h 23mFrontier
Wed 12/2410:29 pmDEN - SAT
1 stop9h 54mFrontier
Deal found 12/8$190

Find flight deals from San Antonio to Denver

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 8, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$87
(Super.com)

One-way from

$24
(Frontier)

Popular in

June

Cheapest in

February

Average price

$217

Good round-trip deal

$144 or less

Good one-way deal

$134 or less
Provider with most accurate pricing for San Antonio-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-Denver Intl flights.
Search Deals
From San Antonio to Denver Intl
Search Deals
One-way flight from San Antonio to Denver Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from San Antonio to Denver Intl.
Search Deals
Price to beat on a one-way flight from San Antonio to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to Denver 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 December 8, 2025.
Use the filters below to find and compare flights from San Antonio to Denver that are best for you.

Fly from

San Antonio

Fly to

Denver

Route

Depart

Return

Price

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Wed 2/25

6:24 pm-12:25 am

1 stop7h 01m

Denver Intl

Sat 2/28

7:05 am-3:35 pm

1 stop7h 30m

$177

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Wed 1/21

6:30 am-2:00 pm

1 stop8h 30m

Denver Intl

Sat 1/24

5:15 am-1:38 pm

1 stop7h 23m

$217

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Wed 1/28

6:17 pm-12:28 am

1 stop7h 11m

Denver Intl

Sun 2/1

7:00 am-1:48 pm

1 stop5h 48m

$217

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Wed 1/14

7:45 am-1:37 pm

1 stop6h 52m

Denver Intl

Mon 1/19

3:40 pm-12:41 am

1 stop8h 01m

$217

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Wed 1/28

2:42 pm-8:05 pm

1 stop6h 23m

Denver Intl

Wed 2/4

7:00 am-1:48 pm

1 stop5h 48m

$217

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Fri 1/9

1:03 pm-7:56 pm

1 stop7h 53m

Denver Intl

Sun 1/11

6:00 am-3:21 pm

1 stop8h 21m

$217

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Sat 1/31

8:00 am-3:38 pm

1 stop8h 38m

Denver Intl

Tue 2/3

6:23 pm-12:41 am

1 stop5h 18m

$217

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Fri 1/30

2:42 pm-8:05 pm

1 stop6h 23m

Denver Intl

Tue 2/3

6:14 am-2:43 pm

1 stop7h 29m

$217

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Sat 1/31

2:35 pm-7:58 pm

1 stop6h 23m

Denver Intl

Mon 2/2

6:23 pm-12:41 am

1 stop5h 18m

$217

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Fri 2/20

2:33 pm-8:05 pm

1 stop6h 32m

Denver Intl

Mon 2/23

6:20 pm-12:41 am

1 stop5h 21m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Showing 1-10 of 18 results
1
2

Compare providers for flights from San Antonio to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Denver in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Antonio-Denver flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Antonio-Denver flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from San Antonio-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-Denver flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Antonio to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from San Antonio 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 San Antonio to Denver

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

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Denver. Price data was last updated on December 5, 2025.

To ensure you get the cheapest price possible for a flight from San Antonio to Denver, you should look to book at least 76 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from San Antonio to Denver (average of $38). Flying from San Antonio to Denver in June is currently the most expensive (average of $98). 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 SAT to DEN?

Find hourly flight availability from San Antonio to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 8, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 49% on flights from San Antonio to Denver by exploring options for tickets in the evening.

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

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

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

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

The best insider tips for San Antonio to Denver flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Antonio to Denver trip
Airports
SAT

For longer trips, economy lots with shuttle service offer better value than the new parking garage at SAT.

Read more about SATby Ramsey Qubein
DEN

Take the A Line train from DEN to Union Station for a quick, cost-effective trip to downtown Denver.

Read more about DENby Emily Zemler
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on SAT

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated December 8, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from San Antonio to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,254 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,011 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,089 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,045 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,085 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

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

  • What airports do I use to fly from San Antonio to Denver?

    If you wish to fly to Denver from San Antonio, then you need to book flights from San Antonio to Denver Intl. There are 12 flights from San Antonio (SAT) to Denver Intl (DEN) per day to choose from. Flights to Denver from San Antonio are available from 5 different airlines, which means you should have some options if you want to compare airfare deals. 2h 16m is how long a nonstop flight from San Antonio to Denver Intl typically takes.

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

    The San Antonio to Denver Intl flight path was viewed by 218 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 San Antonio to Denver?

    Airlines like Delta fly from San Antonio to Denver in about 7h 01m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 795 mi.

  • What are the cheapest airlines flying from San Antonio to Denver round-trip?

    Currently priced at $52, Frontier will fly you from San Antonio to Denver and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and American Airlines - these airlines can fly you to your destination from $98 and $107, respectively. You may be able to fly from San Antonio to Denver for 73% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $35 on Frontier. Other airlines that offer cheap prices include United Airlines from $98 and Southwest from $98 one-way.

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

    The top 3 most reliable airlines when flying from San Antonio to Denver are Frontier (91%), United Airlines (87%) and Air Canada (86%).

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

    Looking for the cheapest flight from San Antonio to Denver? While on average our users pay $394, our data indicates the cheapest price to be $71. The most popular route (San Antonio - Denver Intl), is priced around $112.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Antonio to Denver 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 San Antonio to Denver?

    Currently, March is the cheapest month in which you can book a flight from San Antonio to Denver (average of $38). Flying from San Antonio to Denver in June is currently the most expensive (average of $98). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Black Hawk
Thornton
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Silverthorne
Central City
Frisco
Wheat Ridge
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Antonio to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from San Antonio to Denver

Discover the top 5 airlines that operate flights from San Antonio to Denver. 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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$153FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$276FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$106Average$296FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$148Average$332FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$177Average$303FlexibilityNo cancel feeOn-time63%

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