$58 Cheap Flights from San Antonio (SAT) to Denver (DEN)

View $58 flight on Sat, Aug 30, 2025Opens in a new window

Popular airlines from San Antonio International Airport (SAT) to Denver Intl. Airport (DEN)

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Today's featured flight deals from San Antonio International Airport (SAT) to Denver Intl. Airport (DEN)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from San Antonio to Denver (SAT-DEN)

Prices were available within the past 7 days and start at $58 for one-way flights and $106 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Aug 30 - Sun, Aug 31
SAT
San Antonio
DEN
Denver
$106 Roundtrip, found 6 hours ago
$106
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Sat, Aug 30 from San Antonio to Denver, returning Sun, Aug 31, priced at $106 found 6 hours ago
Frontier Airlines
Sat, Aug 30 - Sat, Sep 6
SAT
San Antonio
DEN
Denver
$114 Roundtrip, just found
$114
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 30 from San Antonio to Denver, returning Sat, Sep 6, priced at $114 just found
Frontier Airlines
Sat, Aug 30 - Sun, Sep 7
SAT
San Antonio
DEN
Denver
$116 Roundtrip, found 19 hours ago
$116
Roundtrip
found 19 hours ago
Select Frontier Airlines flight, departing Sat, Aug 30 from San Antonio to Denver, returning Sun, Sep 7, priced at $116 found 19 hours ago
Frontier Airlines
Mon, Oct 20 - Sat, Oct 25
SAT
San Antonio
DEN
Denver
$123 Roundtrip, found 4 hours ago
$123
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Mon, Oct 20 from San Antonio to Denver, returning Sat, Oct 25, priced at $123 found 4 hours ago
Frontier Airlines
Sat, Aug 23 - Sat, Aug 30
SAT
San Antonio
DEN
Denver
$125 Roundtrip, just found
$125
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 23 from San Antonio to Denver, returning Sat, Aug 30, priced at $125 just found
Frontier Airlines
Sat, Aug 30 - Sun, Aug 31
SAT
San Antonio
DEN
Denver
$126 Roundtrip, found 1 hour ago
$126
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Aug 30 from San Antonio to Denver, returning Sun, Aug 31, priced at $126 found 1 hour ago
United
Sat, Oct 18 - Sat, Oct 25
SAT
San Antonio
DEN
Denver
$137 Roundtrip, just found
$137
Roundtrip
just found
Select United flight, departing Sat, Oct 18 from San Antonio to Denver, returning Sat, Oct 25, priced at $137 just found
Southwest Airlines
Tue, Sep 16 - Tue, Sep 23
SAT
San Antonio
DEN
Denver
$139 Roundtrip, just found
$139
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, Sep 16 from San Antonio to Denver, returning Tue, Sep 23, priced at $139 just found
American Airlines
Sat, Nov 8 - Tue, Nov 11
SAT
San Antonio
DEN
Denver
$150 Roundtrip, just found
$150
Roundtrip
just found
Select American Airlines flight, departing Sat, Nov 8 from San Antonio to Denver, returning Tue, Nov 11, priced at $150 just found
Alaska Airlines
Wed, Nov 5 - Mon, Nov 10
SAT
San Antonio
DEN
Denver
$433 Roundtrip, found 1 day ago
$433
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Nov 5 from San Antonio to Denver, returning Mon, Nov 10, priced at $433 found 1 day ago

Find the cheapest month to fly from San Antonio (SAT) to Denver (DEN)

September is typically the cheapest month to fly

From $48 - $153 per traveler.

Graph displaying average flight prices per month

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $220
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $220
Flights from San Antonio (SAT) to Denver (DEN)
Origin airport
San Antonio Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$105
Distance
794 mi
Average flight time
1 hour 16 mins

San Antonio to Denver Flights

The cheapest times to fly from San Antonio to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Antonio to Denver are during the month of August. You can find some of the cheapest flights from San Antonio to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Antonio to Denver

Sunday is one of the best days to book for cheap flights from San Antonio to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Antonio to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Antonio to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $58 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Antonio to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Antonio to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN) cost?
Snag a cheap one-way flight from $58 or cheap return flight from $106 from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
The cheapest month to fly from SAT to DEN is August, when demand is low. Off-peak months are usually when airlines offer better prices between these airports.
Which airlines fly direct from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
Enjoy an uninterrupted journey to Denver Intl. Airport (DEN). 3 airlines offer nonstop flights from San Antonio Intl. Airport (SAT), including:

  • Southwest Airlines
  • United Airlines
  • Frontier Airlines

What is the cheapest airline that flies from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
Frontier Airlines and United Airlines are some popular carriers offering competitive fares. Don't forget that flight prices from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN) can vary depending on departure dates, demand and how early you book. With Expedia's search tool, you can easily find a SAT to DEN flight that matches your preferences and budget.
How many flights per day from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
When flying out of San Antonio Intl. Airport (SAT), you'll have a choice from an average of 7 daily direct flights to Denver Intl. Airport (DEN).
What are the most popular departure times for flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
More people fly between SAT and DEN at 8 AM than at any other point in the day. Rather go when it's quieter? Travel outside of rush hours and it's possible you'll save on your ticket as well.
What day of the week has the most flights from SAT to DEN?
Friday has the most flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN). Consider jetting off on this day and you'll have the best chance of finding a departure that fits your itinerary.
What is the earliest flight from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
Catch the earliest flight at around 6:00AM UTC-6, leaving from San Antonio Intl. Airport (SAT). You'll be flying for about 2h 20m, reaching Denver Intl. Airport (DEN) at approximately 7:20AM UTC-7.
How long does it take to fly from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
It usually takes 2 hours and 22 minutes to cover the 800 mi from SAT to DEN.
What airline has the least delays from SAT to DEN?
With 88% of flights generally arriving on time, Southwest Airlines has the best on-time performance for direct flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN). To monitor your flight status and receive notifications about any changes, simply head to the Expedia App.
What is the best time to fly from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
To avoid possible delays on the San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Denver from San Antonio Intl. Airport (SAT)?
If you're on a direct flight from San Antonio Intl. Airport (SAT) to Denver, Denver Intl. Airport (DEN) is the only airport you can land at.
Is it cheaper to buy a plane ticket from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN) last-minute?
Last-minute fares from SAT to DEN are usually more expensive. For the cheapest rates, start looking for flights well ahead of time. That said, if you're flexible with your travel dates, it's possible to land a cheap fare just before your departure.
Is it cheaper to book a SAT to DEN flight and hotel package?
Opting for a SAT to DEN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our extensive range of stays and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
Usually, it's possible to reschedule or cancel your SAT to DEN flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.