DEN - STS

$143 Find Cheap Flights from Denver to Santa Rosa - Compare and Save

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 9/15. 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
$263
Typical prices: $358-$593
Alaska Airlines
Tue 11/17Wed 11/18
DEN - STS • 1 stop
Cheapest non-stop
$291
Southwest
Sat 8/22Sat 8/29
DEN - STS • Non-stop
Nonstop flights
5 days a week
Mon, Thu, Fri, Sat, Sun
You can fly direct with Southwest. Average duration is 2h 35m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Cheapest • from $263 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $314 (round-trip)
Shortest trip • 4h 34m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 37% 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

Tue, Nov 17 - Wed, Nov 18
Alaska Airlines Logo
8:20 am - 10:33 pm
DEN
-
STS
15h 13m
1 stop
Alaska Airlines Logo
6:40 am - 7:19 pm
STS
-
DEN
11h 39m
1 stop
$263Alaska Airlines
Tue, Nov 17 - Wed, Nov 18
Alaska Airlines Logo
8:20 am - 10:33 pm
DEN
-
STS
15h 13m
1 stop
Alaska Airlines Logo
6:40 am - 7:19 pm
STS
-
DEN
11h 39m
1 stop
$275Alaska Airlines
Tue, Nov 17 - Wed, Nov 18
Alaska Airlines Logo
8:20 am - 10:33 pm
DEN
-
STS
15h 13m
1 stop
Alaska Airlines Logo
6:40 am - 7:19 pm
STS
-
DEN
11h 39m
1 stop
$283Alaska Airlines
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
9:20 am - 11:00 am
DEN
-
STS
2h 40mnonstop
Southwest Logo
12:45 pm - 4:15 pm
STS
-
DEN
2h 30mnonstop
$291Southwest
Thu, Aug 27 - Mon, Aug 31
Alaska Airlines Logo
6:17 am - 11:54 pm
DEN
-
STS
18h 37m
1 stop
Alaska Airlines Logo
6:47 pm - 12:20 pm
STS
-
DEN
16h 33m
1 stop
$293Alaska Airlines
Thu, Sep 3 - Mon, Sep 7
Alaska Airlines Logo
6:17 am - 11:54 pm
DEN
-
STS
18h 37m
1 stop
Alaska Airlines Logo
6:13 am - 11:44 pm
STS
-
DEN
16h 31m
1 stop
$295Alaska Airlines
Tue, Aug 25 - Fri, Aug 28
Alaska Airlines Logo
6:17 am - 11:54 pm
DEN
-
STS
18h 37m
1 stop
Alaska Airlines Logo
6:13 am - 12:20 pm
STS
-
DEN
5h 07m
1 stop
$299Alaska Airlines
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
2:55 pm - 7:50 pm
DEN
-
STS
5h 55m
1 stop
Southwest Logo
12:45 pm - 4:15 pm
STS
-
DEN
2h 30mnonstop
$301Southwest
Tue, Aug 25 - Fri, Aug 28
Alaska Airlines Logo
1:43 pm - 11:54 pm
DEN
-
STS
11h 11m
1 stop
Alaska Airlines Logo
6:13 am - 12:20 pm
STS
-
DEN
5h 07m
1 stop
$303Alaska Airlines
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
12:25 pm - 7:50 pm
DEN
-
STS
8h 25m
2 stops
Southwest Logo
12:45 pm - 4:15 pm
STS
-
DEN
2h 30mnonstop
$306Southwest
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.

How much is a round-trip flight from Denver to Santa Rosa?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Santa Rosa departing in November.

What’s the cheapest day of the week to fly from Denver to Santa Rosa?

The average price of all round-trip flights from Denver to Santa Rosa clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Denver to Santa Rosa, look for departures on Saturdays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Santa Rosa, Thursday is the cheapest day to fly and Saturday is the most expensive.

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 February and May, where the average cost of round-trip tickets is $634 and $561 respectively.

Can I save money by flying with a layover from Denver to Santa Rosa?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $399, prices are generally cheapest when you fly direct.

Good to know

Low seasonMarch
Cheapest flight$143
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly and prices are also 11% lower on average.
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

  • How many flights are there between Denver and Santa Rosa per day?

    There is a maximum of 1 nonstop flight a day that takes off from Denver and lands in Santa Rosa, with an average flight time of 2h 35m. The most common departure time is 7:00 am and most flights take off in the morning. Each week, there are 1 flights.

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

    In the last 5 days, the lowest price for a flight from Denver to Santa Rosa was $143 for a one-way ticket and $263 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?

    The Airbus A320neo is the aircraft model that flies most regularly on the Denver to Santa Rosa flight 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, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to Santa Rosa are Southwest and Alaska Airlines. With an average price for the route of $438 and an overall rating of 7.9, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $415 and an overall rating of 7.9.

  • 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.

KAYAK’s top tips for finding a cheap flight from Denver to Santa Rosa

  • Looking for a cheap flight? 25% of our users found flights on this route for $399 or less round-trip.

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

Monday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Santa Rosa Sonoma County to Denver Intl

Monday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Reviews of the top 3 airlines serving 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.
7.9
Alaska AirlinesOverall score based on 12565 reviews
8.1Boarding
7.8Comfort
8.5Crew
7.0Entertainment
7.0Food
Airline reviews

The flight was on time, seats were comfortable, crew is friendly and professional. Nice flight overall. Thanks!

10.0 ExcellentElena, Jun 2026
DFW - SAN
Read more Alaska Airlines reviews

The flight was on time, seats were comfortable, crew is friendly and professional. Nice flight overall. Thanks!

We showed up to our gate less than 15 minutes after boarding started and they wouldn’t let us in. It was still 15 minutes even before take off so we’re weren’t even late to the flight.

The plane was delayed almost 3 hours. I had a first class seat and there was no food loaded due to the late night departure (no nuts, not meal and no cookie), and the first class bathroom was out of order. Truly a disappointment all around.

I was very surprised that at the Seattle airport, Alaska's main hub, that the gates were very small and very close together, and it was very hard to discourage between my flight, and the flight next to us going to Boise and the flight next to that going to Denver. Denver. The audio for all three Gates was at the same level, and almost impossible to differentiate unless they actually said their flight number and location. Location. People tried to get on our plane, before they were ready, because they were confused about the Denver announcements. We were on a Boeing 737- 800 00, that must have recently been redone. It actually had USB--c ports which really surprised me. The Apu was out on the plane, so when we got on it was very very hot. A lot of people were complaining. The gate agents were very professional, but it was a lot going on and even though there were two of them, I think they could have used another person to help them. Mandy was particularly helpful in getting me a window seat. Flight crew was up to the usual Alaska airline standard, which is very high. Can we please get another snack then garlic pretzels? It would also be nice, if they knew ahead that the flight was full, to offer to let us check in our bags for free at baggage check, and not at the gate!

On time, good seats, not overly full, up beast positive crew.

People were friendly. Flight was a little delayed. Maybe I missed the reason for it. Overall a nice experience.

The flight itself was great. But we had to wait over an hour to deplane so I missed my train. Not the crews fault. They were wonderful!

Great trip. No complaints. Impressed with the crew’s response to various challenges pre-boarding.

Over all it was great. My original flight was canceled but they quickly rebooked me. I was frustrated because I had to cancel my entire plans for the day but all considered, not bad. The crew tried to keep us calm while we sat in the plane for was felt was an hour or so but they could use a bit of a script. The seats were comfortable and I would give it another try.

Having the internet available while flying was great. Better than having to choose from watching movies from a limited selection.

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Boarding was easy. The seats are small and fairly uncomfortable

Flight cancelled. Twice. And no communication. No gate agent. Went past boarding time and had to go and see email from AA. Airport communication was bad

It was so much better than expected, Ohare is not such a pleasant experience but American Airlines with the new, clean aeroplane and free Wi-Fi was outstanding and the crew so pleasant and helpful.

The flight attendants were extremely sourly and borderline rude. I did not feel appreciated as an AA customer once.

Was put into a seat right behind the toilet that had no entertainment possible but did have plenty of leg room over noisy part of plane.

As we approached Denver, we encountered quite a bit of turbulence. I know this can sometimes be the case as I frequently fly this route but not on American. My gripe: Usually a pilot or co-pilot alerts passengers to the possibility of turbulance ahead of time. This did not occur nor did he communiucate during what was a pretty rough ride.

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Flight: Started on time. Comfortable flight. Arrived on time. Crew: Very cordial and helpful. Drinks and snack was served with a smile. Overall enjoyed the trip. Regards, Hari Doss Chanchala Doss

To have arrived on time and not 3 hours late after having already spent $100 to change to an earlier flight, only to arrive back home close to the original flight time.

American Airlines is a miserable experience. It is predictably miserable, in the sense that every time I fly American, I brace myself for the certainty that it will be unpleasant and uncomfortable. But it is unpredictable in the sense that I never know if the flight will be on time or delayed nine hours (both happened to me this week). I never know if I will be able to sit in the seat that I selected when I purchased the ticket or if I will be told by Customer Service (!!!) that I must relocate from first class to a seat in the back of the aircraft with no explanation (both happened to me this week). Will the food be frozen and half defrosted, or scalding hot? Will the drinks be warm? Will the flight attendants be surly and mean? Will the toilets be cramped and foul? Will the seats be narrow and uncomfortable? Will there be a real electric outlet at the seat, or just an unreliable USB-2 port? Will there be enough seats in the boarding lounge or just a few? Will the boarding process be smooth and efficient, or will the gate agents mess it up and delay it needlessly for 30 or 40 minutes? Will the catering and cleaning crew be prompt or will they take an extra 30 minutes? Will the brakes on the aircraft work properly, or will the pilot delay takeoff for four hours while the ground crew attends to what can only be described as routine maintenance that should have been done the night before? I've eexperienced every one of these unpleasant things this year, 2026. The only thing I can reliably count on is that American will find a new way to make the experience of flying as miserable as they possibly can.

Wifi was spotty. Tray table was very dirty when I sat down.

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

Information on your arrival and departure airports