Cheap flights from Denver to Santa Rosa

Compare Denver to Santa Rosa flight deals

Find the cheapest month or even day of the year to fly to Santa Rosa

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Flight deals from Denver to Santa Rosa Airport

Looking for a cheap last-minute deal or the best return flight from Denver to Santa Rosa Airport? If you want to travel next month, return fares start from P23,526. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Denver to Santa Rosa

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver to Santa Rosa flights are currently cheapest in May.

Direct flights from Denver to Santa Rosa

Denver to Santa Rosa: Alternative routes

Compare routes from Denver to Santa Rosa below. You may find an airport to fly into that's cheaper, faster, or easier than Santa Rosa.

Denver to Santa Rosa: Flight information

The things to know before you go.
Cheapest flight foundP22,153
Cheapest month to flyMay
Average flight time2 hrs, 39 mins
Most popular airlineSouthwest Airlines
Average flights per week6

Finding cheap flights from Denver to Santa Rosa: Frequently asked questions

The best price we found for a return flight from Denver to Santa Rosa is P22,153. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 39 minutes is the average flight time from Denver to Santa Rosa.
Southwest Airlines flies direct from Denver to Santa Rosa.
As of March 2026, there are 3 flights per week flying from Denver to Santa Rosa.
The cheapest month to fly from Denver to Santa Rosa is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to Santa Rosa Airport on Thursday, 21 May 2026.
Yes – the average flight time is 2 hours and 39 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Santa Rosa but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Santa Rosa is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Santa Rosa is Southwest Airlines .

Flying from Denver to Sonoma County Airport (STS): What you need to know

  • Your next big escape starts at Denver's main airport, Denver International Airport (DEN). Explore the options for reserving a flight from Denver to Sonoma County Airport (STS) leaving from this base.

  • The timezone in Santa Rosa is UTC-7, which is one hour behind Denver. Sonoma County Airport is located in Santa Rosa.

  • To ensure you get on your flight from Denver to STS, leave plenty of time for things like check-in and baggage drop. Turning up two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Delays at security and check-in are likely if you're travelling during high season, so give yourself a little extra breathing room. The recommendation for peak times? Get there up to four hours ahead for international flights and two hours for domestic departures.

Airports in Denver

Denver International Airport (DEN)

  • DEN is about 40 kilometres from central Denver. If you're driving, ride-sharing or catching a cab from the centre, it'll take you 35 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the trip time to be around 1 hour 30 minutes.

  • Booking a hotel room for the night can take the stress out of getting to the airport on time. If you're looking for somewhere to stay before your flight from Denver to Sonoma County Airport, check out Baymont by Wyndham Denver International Airport. It's a quick drive from Denver International Airport.

  • Denver International Airport has a solid on-time record, reducing your chances of a delayed flight. Departures from DEN touch down on schedule 80.23% of the time.

  • You'll find DEN at 8500 Pena Boulevard.

About Sonoma County Airport (STS)

Getting from Sonoma County Airport (STS) to central Santa Rosa

  • Sonoma County Airport to the centre of Santa Rosa is around 11 kilometres. If you're getting a cab or renting a car, plan in advance to make your trip as easy as possible. Journey times can vary based on traffic conditions and the time of day.

  • It takes around 35 minutes to get there using public transport.

How to find the cheapest flights from Denver to Sonoma County Airport (STS)

  • P9,841 is the best price for a one-way ticket from Denver to Sonoma County Airport. A return flight starts at P22,153. These fares may change depending on demand.

  • Booking early is often the key to finding a cheap flight from Denver to STS. Prices tend to rise as demand increases, so the closer your departure date, the more you'll likely pay.

  • The 'Whole month' tool shows you the cheapest Denver to Sonoma County Airport tickets across the month. It's a great way to find a bargain if your trip dates are flexible.

  • Snapping up a cheap plane ticket from Denver to STS is a piece of cake with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch as soon as prices go down.

  • Filters make it easier to track down a bargain for your flight from Denver to Sonoma County Airport. Choose the flight times, carriers and stops that look good to you. Then sort the results by 'Cheapest' to find the most affordable option fast.

The best time to fly from Denver to Sonoma County Airport (STS)

  • Think about the kind of experience you want when picking your flight dates. May is the quietest month to go to Santa Rosa. October is when most people book flights from Denver to Sonoma County Airport (STS), which may be perfect if you're after more excitement.

  • The warmest month in Santa Rosa is August, with temperatures ranging between 11ºC (52ºF) and 29ºC (84ºF). Book your Denver to STS plane ticket then if that's your ideal forecast.

  • Look for cheap tickets from Denver to Sonoma County Airport in February if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 2ºC (36ºF) and 19ºC (66ºF).

More about Santa Rosa

Explore more of the United States

  • San Jose is just one of the many cities in the United States waiting to be explored after you've seen Santa Rosa. Around 153 kilometres away to the south-east, check out popular attractions including Japantown (San Jose), Winchester Mystery House and The Tech Museum of Innovation.

  • Around 113 kilometres east of Santa Rosa, Sacramento is another favourite stop in the United States. No visit is complete without checking out Old Sacramento Waterfront, Fright Planet - America's Haunted Theme Park and California State Railroad Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.