$127 Cheap Flights from Santa Rosa (STS) to Denver (DEN)

View $127 flight on Tue, Oct 21, 2025Opens in a new window

Popular airlines from Santa Rosa, CA (STS-Sonoma County) to Denver Intl. Airport (DEN)

Cheap Flights from Santa Rosa to Denver (STS-DEN)

Prices were available within the past 7 days and start at $127 for one-way flights and $242 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Sat, Feb 7 - Tue, Feb 24
STS
Santa Rosa
DEN
Denver
$242 Roundtrip, just found
$242
Roundtrip
just found
Select Hawaiian Airlines flight, departing Sat, Feb 7 from Santa Rosa to Denver, returning Tue, Feb 24, priced at $242 just found
Hawaiian Airlines
Sat, Feb 7 - Wed, Feb 18
STS
Santa Rosa
DEN
Denver
$252 Roundtrip, just found
$252
Roundtrip
just found
Select Hawaiian Airlines flight, departing Sat, Feb 7 from Santa Rosa to Denver, returning Wed, Feb 18, priced at $252 just found
Hawaiian Airlines
Sat, Oct 4 - Tue, Oct 14
STS
Santa Rosa
DEN
Denver
$260 Roundtrip, found 1 day ago
$260
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Oct 4 from Santa Rosa to Denver, returning Tue, Oct 14, priced at $260 found 1 day ago
Hawaiian Airlines
Sat, Feb 7 - Sat, Feb 28
STS
Santa Rosa
DEN
Denver
$268 Roundtrip, just found
$268
Roundtrip
just found
Select Hawaiian Airlines flight, departing Sat, Feb 7 from Santa Rosa to Denver, returning Sat, Feb 28, priced at $268 just found
Alaska Airlines
Wed, Oct 29 - Tue, Nov 4
STS
Santa Rosa
DEN
Denver
$269 Roundtrip, found 9 hours ago
$269
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Wed, Oct 29 from Santa Rosa to Denver, returning Tue, Nov 4, priced at $269 found 9 hours ago
Hawaiian Airlines
Thu, Dec 4 - Tue, Dec 9
STS
Santa Rosa
DEN
Denver
$270 Roundtrip, found 2 days ago
$270
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Dec 4 from Santa Rosa to Denver, returning Tue, Dec 9, priced at $270 found 2 days ago
Hawaiian Airlines
Sat, Dec 6 - Thu, Dec 11
STS
Santa Rosa
DEN
Denver
$272 Roundtrip, found 2 days ago
$272
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, Dec 6 from Santa Rosa to Denver, returning Thu, Dec 11, priced at $272 found 2 days ago
Hawaiian Airlines
Sat, Feb 7 - Fri, Feb 27
STS
Santa Rosa
DEN
Denver
$272 Roundtrip, just found
$272
Roundtrip
just found
Select Hawaiian Airlines flight, departing Sat, Feb 7 from Santa Rosa to Denver, returning Fri, Feb 27, priced at $272 just found
Hawaiian Airlines
Tue, Feb 10 - Wed, Feb 11
STS
Santa Rosa
DEN
Denver
$276 Roundtrip, just found
$276
Roundtrip
just found
Select Hawaiian Airlines flight, departing Tue, Feb 10 from Santa Rosa to Denver, returning Wed, Feb 11, priced at $276 just found
American Airlines
Tue, Oct 21 - Tue, Nov 4
STS
Santa Rosa
DEN
Denver
$359 Roundtrip, found 4 hours ago
$359
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, Oct 21 from Santa Rosa to Denver, returning Tue, Nov 4, priced at $359 found 4 hours ago

Find the cheapest month to fly from Santa Rosa (STS) to Denver (DEN)

November is typically the cheapest month to fly

From $260 - $763 per traveler.

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 $378
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $378
Flights from Santa Rosa (STS) to Denver (DEN)
Origin airport
Sonoma County
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$242
Distance
973 mi

Santa Rosa to Denver Flights

The cheapest times to fly from Santa Rosa 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 Santa Rosa to Denver are during the month of February. You can find some of the cheapest flights from Santa Rosa to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Santa Rosa to Denver

Sunday is one of the best days to book for cheap flights from Santa Rosa 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 Santa Rosa 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 Santa Rosa to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $127 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 Santa Rosa 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 Santa Rosa 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 Sonoma County Airport (STS) to Denver Intl. Airport (DEN) cost?
Snag a cheap one-way flight from $127 or cheap return flight from $242 from Sonoma County Airport (STS) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Sonoma County Airport (STS) to Denver Intl. Airport (DEN)?
February is the cheapest month to fly from STS to DEN. Timing your trip outside of the busy season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Sonoma County Airport (STS) to Denver Intl. Airport (DEN)?
To find the cheapest airline that'll fly you from STS to DEN, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Sonoma County Airport (STS) to Denver Intl. Airport (DEN)?
There aren't any daily nonstop flights from Sonoma County Airport (STS) to Denver Intl. Airport (DEN). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from STS to DEN?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from STS to DEN?
United Airlines has the best track record for on-time direct flights from Sonoma County Airport (STS) to Denver Intl. Airport (DEN), with an on-time score of 81%. Use the Expedia App to see your journey status before you go and get real-time alerts about any trip changes.
What is the best time to fly from Sonoma County Airport (STS) to Denver Intl. Airport (DEN)?
To touch down at Denver Intl. Airport (DEN) on schedule, select a flight that leaves from Sonoma County Airport (STS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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.
Is it cheaper to buy a plane ticket from Sonoma County Airport (STS) to Denver Intl. Airport (DEN) last-minute?
Waiting until just before your departure to book a flight from STS to DEN generally means paying more. Although you may find some last-minute offers, they're not always guaranteed. Be flexible with your itinerary for a better chance of getting a bargain.
Is it cheaper to book a STS to DEN flight and hotel package?
Compared with arranging hotels and flights separately, booking a STS to DEN flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place will take the stress out of planning your trip. Just pick your flights and choose from our wide range of hotels, then personalize your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Sonoma County Airport (STS) to Denver Intl. Airport (DEN)?
In most cases, you're able to cancel or reschedule your STS to DEN flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want more details, visit our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.