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$19+ 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 12/30. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — DEN
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
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

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

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Cheapflights Tip: The best prices from San Antonio to Denver Intl are usually found in February or January, booked 45 days in advance, depart on a Thursday or Saturday and return on a Saturday

Cheap 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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$88
(Frontier)

One-way from

$19
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$197

Good round-trip deal

$189 or less

Good one-way deal

$118 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.
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From San Antonio to Denver Intl
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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 ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from San Antonio to Denver Intl.
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Price to beat on a one-way flight from San Antonio to Denver Intl.
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Find 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 October 23, 2025.

This Frontier deal was found by Cheapflights users on 10/22. 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 11/153:12 pmSAT - DEN
Nonstop2h 26mFrontier
Wed 11/193:30 pmDEN - SAT
Nonstop2h 15mFrontier
Deal found 10/22$88
This Kiwi.com deal was found by Cheapflights users on 10/20. 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.
Fri 11/148:25 pmSAT - DEN
Nonstop2h 23mFrontier
Sat 11/1511:00 amDEN - SAT
Nonstop2h 17mFrontier
Deal found 10/20$92
This Priceline deal was found by Cheapflights users on 10/23. 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.
Sat 11/83:12 pmSAT - DEN
Nonstop2h 26mFrontier
Sat 11/1511:00 amDEN - SAT
Nonstop2h 17mFrontier
Deal found 10/23$93
This Priceline deal was found by Cheapflights users on 10/23. 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.
Thu 12/113:06 pmSAT - DEN
Nonstop2h 28mFrontier
Sun 12/146:12 amDEN - SAT
Nonstop2h 18mFrontier
Deal found 10/23$95
This CheapOair deal was found by Cheapflights users on 10/21. 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 12/41:51 pmSAT - DEN
1 stop20h 13mFrontier
Wed 1/711:38 amDEN - SAT
Nonstop2h 18mFrontier
Deal found 10/21$102
This CheapOair deal was found by Cheapflights users on 10/23. 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 11/138:38 pmSAT - DEN
Nonstop2h 23mFrontier
Sat 11/1511:00 amDEN - SAT
Nonstop2h 17mFrontier
Deal found 10/23$103
This Priceline deal was found by Cheapflights users on 10/22. 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.
Fri 12/2612:18 pmSAT - DEN
Nonstop2h 23mFrontier
Tue 12/308:05 amDEN - SAT
Nonstop2h 16mFrontier
Deal found 10/22$104
This Frontier deal was found by Cheapflights users on 10/21. 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 11/108:25 pmSAT - DEN
Nonstop2h 23mFrontier
Sun 11/164:16 pmDEN - SAT
Nonstop2h 14mFrontier
Deal found 10/21$105
This Priceline deal was found by Cheapflights users on 10/21. 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.
Thu 12/41:51 pmSAT - DEN
1 stop7h 21mFrontier
Sun 12/76:12 amDEN - SAT
Nonstop2h 18mFrontier
Deal found 10/21$108
This Priceline deal was found by Cheapflights users on 10/21. 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.
Sat 11/13:12 pmSAT - DEN
Nonstop2h 26mFrontier
Sat 11/811:00 amDEN - SAT
Nonstop2h 17mFrontier
Deal found 10/21$110

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 October 23, 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

Sat 12/13

1:34 pm-2:54 pm

Nonstop2h 20m

Denver Intl

Mon 12/15

1:42 pm-4:54 pm

Nonstop2h 12m

$163

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Thu 12/4

1:34 pm-2:54 pm

Nonstop2h 20m

Denver Intl

Sat 12/6

1:35 pm-4:47 pm

Nonstop2h 12m

$163

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Fri 1/9

6:35 am-12:15 pm

2 stops6h 40m

Denver Intl

Sun 1/11

9:50 am-3:25 pm

1 stop4h 35m

$176

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Sat 12/6

11:41 am-5:52 pm

1 stop7h 11m

Denver Intl

Sat 12/13

7:00 am-2:22 pm

1 stop6h 22m

$177

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Sun 2/1

2:10 pm-10:22 pm

1 stop9h 12m

Denver Intl

Wed 2/4

12:59 am-11:30 am

1 stop9h 31m

$177

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Mon 2/2

6:20 pm-11:54 pm

1 stop6h 34m

Denver Intl

Wed 2/4

12:59 am-10:00 am

1 stop8h 01m

$177

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Fri 1/30

6:05 pm-10:35 pm

1 stop5h 30m

Denver Intl

Sun 2/1

7:05 am-1:34 pm

1 stop5h 29m

$177

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Thu 12/4

1:34 pm-2:54 pm

Nonstop2h 20m

Denver Intl

Sun 12/7

5:40 pm-8:53 pm

Nonstop2h 13m

$181

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Fri 12/12

7:00 pm-11:30 pm

1 stop5h 30m

Denver Intl

Mon 12/15

1:42 pm-4:54 pm

Nonstop2h 12m

$191

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Fri 2/20

7:37 pm-11:35 pm

1 stop4h 58m

Denver Intl

Tue 2/24

5:00 am-1:08 pm

1 stop7h 08m

$201

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 21 results
1
2
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Denver flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 October 17, 2025.

To ensure you get the cheapest price possible for a flight from San Antonio to Denver, you should look to book at least 45 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 October 23, 2025.

Unlike in the morning, 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 October 19, 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.

The best insider tips for San Antonio to Denver flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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 October 23, 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
4,236 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,236 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
7.9
Good
7,982 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,995 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
11,033 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Frontier
5.8
Fair
3,128 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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 8 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 20m 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 201 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 United Airlines, Southwest, and Delta fly from San Antonio to Denver in about 2h 20m. The time it takes to get you to your destination can typically vary by up to 4h 51m. Airlines will cover a distance of 795 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $58, 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 70% less than the average price by searching for these airlines.

  • 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 Sun Country Air (100%), Frontier (90%) and Lufthansa (87%).

  • 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 $1,085, our data indicates the cheapest price to be $72. The most popular route (San Antonio - Denver Intl), is priced around $85.

  • 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
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Central City
Manitou Springs
Fort Morgan
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker
Sterling

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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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$151FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$276FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$107Average$286FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$155Average$341FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$177Average$307FlexibilityNo cancel feeOn-time63%

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