$74 Cheap Frontier Airlines flights San Antonio (SAT) to Denver (DEN)

View $74 flight on Sat, Jul 5, 2025Opens in a new window

$74 Cheap Frontier Airlines flights San Antonio (SAT) to Denver (DEN)

Prices were available within the past 7 days and start at $74 for one-way flights and $148 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Jul 5 - Sat, Aug 16
SAT
San Antonio
DEN
Denver
$148 Roundtrip, just found
$148
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jul 5 from San Antonio to Denver, returning Sat, Aug 16, priced at $148 just found
Frontier Airlines
Sat, Jul 5 - Sat, Aug 16
SAT
San Antonio
DEN
Denver
$153 Roundtrip, just found
$153
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jul 5 from San Antonio to Denver, returning Sat, Aug 16, priced at $153 just found
Frontier Airlines
Sat, Jul 26 - Wed, Jul 30
SAT
San Antonio
DEN
Denver
$163 Roundtrip, found 2 hours ago
$163
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, Jul 26 from San Antonio to Denver, returning Wed, Jul 30, priced at $163 found 2 hours ago
Frontier Airlines
Sat, Jul 5 - Thu, Jul 10
SAT
San Antonio
DEN
Denver
$168 Roundtrip, found 4 hours ago
$168
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, Jul 5 from San Antonio to Denver, returning Thu, Jul 10, priced at $168 found 4 hours ago
Frontier Airlines
Tue, Jul 15 - Thu, Jul 24
SAT
San Antonio
DEN
Denver
$175 Roundtrip, found 1 hour ago
$175
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Jul 15 from San Antonio to Denver, returning Thu, Jul 24, priced at $175 found 1 hour ago
Frontier Airlines
Thu, Jul 17 - Sat, Jul 19
SAT
San Antonio
DEN
Denver
$176 Roundtrip, just found
$176
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jul 17 from San Antonio to Denver, returning Sat, Jul 19, priced at $176 just found
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
Popular airline
American Airlines
Distance
794 mi
Average flight time
1 hour 16 mins

Frequently asked questions

How much is a Frontier Airlines flight from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
Finding cheap one-way Frontier Airlines flights from SAT to DEN from $74 on Expedia couldn't be easier --- just filter by "Price (lowest to highest)." Or check out our affordable return fares from $148 for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SAT to DEN with Frontier Airlines?
Frontier Airlines flights to Denver tend to be more affordable in the quieter months of January and November. Whether you need a round-trip or one-way ticket, you could find a better deal then.
What is the cheapest time to book flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN) with Frontier Airlines?
Begin your search one to three months ahead of your travel date to score cheap fares on Frontier Airlines flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic trips.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Frontier Airlines fly nonstop from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
Frontier Airlines offers direct flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN), with 4 departures every week. Just apply the "Nonstop" and "Airline" filters during your search on Expedia to see all direct Frontier Airlines flights to DEN.
How long does it take to fly from SAT to DEN with Frontier Airlines?
Depart San Antonio Intl. Airport (SAT) for Denver Intl. Airport (DEN) on a direct Frontier Airlines flight, and you'll be in the skies for approximately 2h 23m.
What is the earliest Frontier Airlines flight from SAT to DEN?
The earliest flight from SAT to DEN with Frontier Airlines leaves at 1:02PM UTC-6. You'll land at 2:25PM UTC-7. The last Frontier Airlines flight of the day takes off at 1:02PM UTC-6 and arrives at 2:25PM UTC-7. With around 20% fewer cancellations for departures before noon, setting off early is generally the smartest choice.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Frontier Airlines fly into in Denver?
Denver Intl. Airport (DEN) is the primary Denver hub for Frontier Airlines flights from San Antonio Intl. Airport (SAT).
Why fly with Frontier Airlines from SAT to DEN?
Offering a rewarding loyalty program, Frontier Airlines is a top pick for many travelers flying from SAT to DEN. Plus, if you're a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does Frontier Airlines fly from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
You'll likely be seated on an Airbus A321neo or an Airbus A321 when flying Frontier Airlines from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN). However, keep in mind that a different aircraft may be assigned depending on operational requirements.
Can I change or cancel my Frontier Airlines flight from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
In most cases, you can cancel or modify your flight, although there may be additional fees if your booking was made more than 24 hours ago. Need to keep your options open? Make use of Expedia's "Changes included" or "No cancel fee" filter to find flights that won't charge you extra if you have to adjust your plans. To make changes, visit "Trips," select your flight and click on "Manage Booking" for more details.

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*Available to One Key members.