Cheap Flights from Santa Rosa to Denver

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Flight deals from Santa Rosa to Denver

Looking for a cheap last-minute deal or the best return flight from Santa Rosa to Denver? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Santa Rosa to Denver

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

Direct flights from Santa Rosa to Denver

Alternative Santa Rosa to Denver routes

Looking for the cheapest, fastest or easiest route from Santa Rosa to Denver? You could fly into the following airports instead.

Santa Rosa to Denver: Flight information

The things to know before you go.
Cheapest flight found$605
Cheapest month to flyApril
Average flight time2 hrs, 32 mins
Most popular airlineSouthwest Airlines
Average flights per week3

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

There are 4 airports in Denver: Denver Arapahoe Co, Broomfield, Denver International, and Northern Colorado Regional.
The best price we found for a return flight from Santa Rosa to Denver is $605. 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 32 minutes is the average flight time from Santa Rosa to Denver.
Southwest Airlines flies direct from Santa Rosa to Denver.
As of February 2026, there are 6 flights per week flying from Santa Rosa to Denver.
The cheapest month to fly from Santa Rosa to Denver is usually April.
If you're flying from Santa Rosa Airport, the cheapest airport near Denver is Denver International – which is 29.9 km away from the centre of Denver. We've found flights into this airport from $605.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Santa Rosa Airport to Denver on Thursday, 30 April 2026.
Yes – the average flight time is 2 hours and 32 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 Denver 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 Denver is around 40 days in advance, so don’t leave your flight to the last minute.
In February, the average temperature is usually around 0°C. July is typically the warmest month in Denver, when it usually averages around 31°C. You can expect the least rain in January. The coldest month is December, with temperatures averaging -6°C. The rainiest month is July.
Currently, Southwest Airlines offers the cheapest flight tickets to Denver.

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

  • Sonoma County Airport is located in Santa Rosa. Based in the UTC-6 timezone, Denver is one hour ahead of Santa Rosa.

  • Give yourself enough time to get on your STS to Denver flight. It's generally best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Delays at security and check-in are likely if you're jetting off during high season, so allow some extra breathing room. A good rule for peak periods? Get there up to four hours early for international flights and two hours for domestic departures.

  • Located around 11 kilometres from central Santa Rosa, STS can be reached in about 15 minutes by car. The journey on public transport takes roughly 35 minutes.

  • Searching for a hotel close to STS? If you're boarding an early flight from Sonoma County Airport to Denver, these accommodation options put the terminal practically at your doorstep:

  • 73.45% of flights taking off from Sonoma County Airport reach their destination on time.

  • The address for STS is 2200 Airport Boulevard.

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

  • $224 is currently the lowest price for a one-way Sonoma County Airport to Denver flight. A return flight ticket starts at $605. These fares can change depending on demand.

  • Don't wait until the last minute. You're more likely to find cheap flights from STS to Denver if you book in advance. Airlines often offer some great early bird rates.

  • The 'Whole month' tool will show you the cheapest tickets from Sonoma County Airport to Denver across the month. It's an easy way to snap up a bargain if your travel dates are flexible.

  • You don't need to keep looking every day to see if fares have dropped when you set up a Price Alert. We'll notify you when there's an even bigger deal on cheap flights from STS to Denver.

  • Pick your preferred arrival and departure times, number of stops and airlines with our filters. Then, sort the results for your flight from Sonoma County Airport to Denver by 'Best,' 'Cheapest' or 'Fastest.'

Airports in Denver

Denver International Airport (DEN)

  • Denver International Airport (DEN) to the centre of Denver takes around 35 minutes to reach by car. The centre is roughly 40 kilometres away.

  • If you're travelling by public transport, expect a journey time of about 1 hour 30 minutes.

  • Jump off your flight from Sonoma County Airport to Denver and be relaxing in your hotel bed soon after. If you're looking for a comfortable option just a short drive from DEN, consider Baymont by Wyndham Denver International Airport.

  • Grab a Denver International Airport rental car and explore Denver and beyond with your own set of wheels. Routes Car Rentals, Dollar and Budget are top outlets you can book with here.

  • Reserving your vehicle from Denver International Airport around one week before your flight from STS to Denver can help you get the lowest rate.

  • The address for DEN is 8500 Pena Boulevard.

Best time to go to Denver

  • Before booking your flights from Sonoma County Airport to Denver, consider which time of year is best for you. Peak season in Denver offers a lively atmosphere and plenty to do, while low season brings better hotel deals and smaller crowds.

  • Book a Sonoma County Airport to Denver flight ticket with a departure in July to visit the city during its warmest month. Expect temperatures to range from 14ºC to 32ºC.

  • January has average temperatures of between -9ºC and 7ºC. Look for a cheap ticket from STS to Denver around that time if you want to travel when it's cooler.

More about Denver

Explore more of United States

  • Colorado Springs is just one of the many places in United States waiting to be discovered once you've taken in the sights of Denver. Around 105 kilometres away to the south, check out popular attractions including US Northern Command (USNORTHCOM) / North American Aerospace Defence Command (NORAD) Headquarters, Cheyenne Mountain Air Force Station and National Strength and Conditioning Association (NSCA).

  • Around 161 kilometres south of Denver, Pueblo is another essential stop in United States. Get a taste of what this destination has to offer at Pueblo Weisbrod Aircraft Museum, Rosemount Museum and Pueblo Zoo.

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