DEN - STS

$117 Find Cheap Flights from Denver to Santa Rosa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Santa Rosa departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Santa Rosa

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Santa Rosa, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Santa Rosa, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$233
Overall average: $602
Alaska Airlines
Sat 4/25Sat 5/2
DEN - STS • 1 stop
Cheapest non-stop
$375
Southwest
Sat 5/23Sat 5/23
DEN - STS • Non-stop
Nonstop flights
1 day a week
Sat
You can fly direct with Southwest. Average duration is 0
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Cheapest • from $233 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $387 (round-trip)
Shortest trip • 5h 20m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 36% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Santa Rosa!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Santa Rosa that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Santa Rosa

Sat, Apr 25 - Sat, May 2
Alaska Airlines Logo
6:45 am - 10:58 am
DEN
-
STS
5h 13m
1 stop
Alaska Airlines Logo
10:01 am - 6:25 pm
STS
-
DEN
7h 24m
1 stop
$233Alaska Airlines
Tue, May 5 - Wed, May 6
Alaska Airlines Logo
6:00 am - 11:59 pm
DEN
-
STS
18h 59m
2 stops
Alaska Airlines Logo
7:23 am - 11:59 pm
STS
-
DEN
15h 36m
1 stop
$253Alaska Airlines
Sat, Apr 25 - Sat, May 2
Alaska Airlines Logo
8:00 am - 11:01 pm
DEN
-
STS
16h 01m
2 stops
Alaska Airlines Logo
10:01 am - 6:25 pm
STS
-
DEN
7h 24m
1 stop
$255Alaska Airlines
Tue, May 5 - Fri, May 8
Alaska Airlines Logo
1:02 pm - 7:06 pm
DEN
-
STS
7h 04m
1 stop
Alaska Airlines Logo
7:23 am - 11:59 pm
STS
-
DEN
15h 36m
2 stops
$263Alaska Airlines
Mon, Apr 6 - Thu, Apr 9
Alaska Airlines Logo
6:20 pm - 10:03 am
DEN
-
STS
16h 43m
1 stop
Alaska Airlines Logo
7:00 am - 5:24 pm
STS
-
DEN
9h 24m
1 stop
$271Alaska Airlines
Tue, May 5 - Fri, May 8
Alaska Airlines Logo
8:00 am - 11:59 pm
DEN
-
STS
16h 59m
2 stops
Alaska Airlines Logo
8:00 pm - 12:06 pm
STS
-
DEN
15h 06m
1 stop
$273Alaska Airlines
Thu, May 7 - Sun, May 10
Alaska Airlines Logo
6:00 am - 11:01 pm
DEN
-
STS
18h 01m
2 stops
Alaska Airlines Logo
7:23 am - 12:06 pm
STS
-
DEN
27h 43m
1 stop
$283Alaska Airlines
Thu, Apr 30 - Fri, May 1
Alaska Airlines Logo
7:06 pm - 11:27 pm
DEN
-
STS
5h 21m
1 stop
Alaska Airlines Logo
1:13 pm - 9:49 pm
STS
-
DEN
7h 36m
1 stop
$290Alaska Airlines
Thu, Apr 30 - Sun, May 3
Alaska Airlines Logo
6:00 am - 7:06 pm
DEN
-
STS
14h 06m
2 stops
Alaska Airlines Logo
8:00 pm - 12:06 pm
STS
-
DEN
15h 06m
1 stop
$293Alaska Airlines
Tue, Mar 24 - Tue, Mar 31
Alaska Airlines Logo
6:20 pm - 11:13 pm
DEN
-
STS
5h 53m
1 stop
Alaska Airlines Logo
7:46 pm - 11:44 pm
STS
-
DEN
26h 58m
1 stop
$302Alaska Airlines
Booking Insights

KAYAK's insights & trends for Denver to Santa Rosa flights

Get data-powered insights and trends into flights from Denver to Santa Rosa to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Denver to Santa Rosa?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Santa Rosa, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Santa Rosa is March, where tickets cost $280 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $602 and $598 respectively.

Good to know

Low seasonMarch
Cheapest flight$117
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Denver to Santa Rosa

When to book flights from Denver to Santa Rosa

Are your dates flexible? Find out the best times to travel from Denver to Santa Rosa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Santa Rosa

  • What is the cheapest flight from Denver to Santa Rosa?

    In the last 3 days, the lowest price for a flight from Denver to Santa Rosa was $117 for a one-way ticket and $233 for a round-trip.

  • Do I need a passport to fly between Denver and Santa Rosa?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Denver to Santa Rosa?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Santa Rosa?

    oneworld is the only airline alliance operating flights between Denver and Santa Rosa.

  • On which days can I fly direct from Denver to Santa Rosa?

    You can catch a nonstop flight from Denver to Santa Rosa on on Saturday.

  • Which is the best airline for flights from Denver to Santa Rosa, Alaska Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to Santa Rosa are Alaska Airlines and American Airlines. With an average price for the route of $404 and an overall rating of 8.0, Alaska Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $590 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Denver to Santa Rosa?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Santa Rosa.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Santa Rosa?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santa Rosa from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Santa Rosa?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santa Rosa with an airline and back to Denver with another airline. Booking your flights between Denver and STS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Santa Rosa?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santa Rosa from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Denver to Santa Rosa?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to Santa Rosa Sonoma County.
Find which airlines fly direct from Denver Intl Airport to Santa Rosa Sonoma County Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to Santa Rosa Sonoma County

Saturday

Southwest

Southwest

See more direct flights

Direct returns

Santa Rosa Sonoma County to Denver Intl

Saturday

Southwest

Southwest

See more direct flights

Reviews of the top airlines flying from Denver to Santa Rosa

 
See real verified KAYAK customer reviews for airlines flying from Denver to Santa Rosa. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Santa Rosa? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 12018 reviews
7.0Entertainment
8.5Crew
7.8Comfort
7.1Food
8.1Boarding
Airline reviews

The airport crew and on board experience was fine. The problem with Alaska air is that there is zero customer service over the phone when you’re trying to buy your ticket or change anything.

8.0 ExcellentMary, Mar 2026
LAS - STS
Read more Alaska Airlines reviews

The airport crew and on board experience was fine. The problem with Alaska air is that there is zero customer service over the phone when you’re trying to buy your ticket or change anything.

The front desk attendant was rude to everyone in an absolutely careless way.

Good as usual. Just wished my seat was assigned at online check in. Thanks anyways

The flight attendant was friendly and attentive. Although our interaction was brief—- it made a difference. The crew was upfront about turbulence. I like the Maui pretzels.

The boarding process could be clearer, there's never a call for group f

I bought tickets MONTHS ago for a flight that left SAN at 14:30. That is what it says on our tickets. I was never notified of any time changes. During online check-in. I discovered the flight time had been changed to 15:45. This was unacceptable and had I been notified, I would have changed flights, or airlines. That departure time was unworkable with our plans. We called Alaska and asked for an explanation. They said flight time was changed 11/08/25. No proof of notification could be offered. We asked to be moved to an earlier flight. After much pleading, the rep said she would allow a “one time exception..” While I appreciate being moved, this was YOUR fault Alaska Airlines.

Representatives both at the gate and on the plane have zero interest in helping you! It’s really unfortunate…

The planes were in very nice condition. Comfortable enough leg room. I had a very quick connection on my return home I made it just fine and so did my luggage!!

We left late; had to land in Minneapolis unscheduled to refuel and then landed in interior instead of lax at 2am......

I was in economy class and there was plenty of leg room. New interior which was nice and they served various kinds of chips and sodas on the red eye. You couldn't get a bottle of water but they instead served it in a medium paper cup from a reinforced structured paper container, environmental friendly.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

They are always late and seats was also not having working charger

did not have enough meal for first class passengers so offer us snack

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything you need to know for your flight from Denver to Santa Rosa

Information on your arrival and departure airports