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$112+ Cheap flights from Santa Rosa to Denver (STS - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
STS — DEN
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Find cheap flights from Santa Rosa to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Santa Rosa Sonoma County to Denver Intl are usually found in November or February, booked 40 days in advance, depart on a Thursday or Saturday and return on a Sunday

Cheap flight deals from Santa Rosa to Denver

Cheapest flights from Santa Rosa to Denver
Explore the most affordable flight options available from Santa Rosa to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:51 pmSTS - DEN
1 stop8h 08mAlaska Airlines
Sun 1/117:39 pmDEN - STS
1 stop28h 32mAlaska Airlines
Deal found 12/20$578
This Kiwi.com deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:24 pmSTS - DEN
1 stop8h 35mAlaska Airlines
Tue 1/68:00 amDEN - STS
1 stop6h 32mAlaska Airlines
Deal found 12/21$579
This Alaska Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:24 pmSTS - DEN
1 stop8h 35mAlaska Airlines
Thu 1/811:49 amDEN - STS
1 stop9h 52mAlaska Airlines
Deal found 12/22$580
This Alaska Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:51 pmSTS - DEN
1 stop8h 08mAlaska Airlines
Sat 1/108:04 amDEN - STS
1 stop7h 25mAlaska Airlines
Deal found 12/20$589
This Alaska Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:51 pmSTS - DEN
1 stop8h 08mAlaska Airlines
Sun 1/117:00 amDEN - STS
2 stops17h 11mAlaska Airlines
Deal found 12/20$664
This Alaska Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amSTS - DEN
2 stops15h 59mAlaska Airlines
Sat 1/108:04 amDEN - STS
1 stop7h 25mAlaska Airlines
Deal found 12/20$668
This Alaska Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:51 pmSTS - DEN
1 stop8h 08mAlaska Airlines
Fri 1/95:09 pmDEN - STS
2 stops18h 16mAlaska Airlines
Deal found 12/20$674

Find flight deals from Santa Rosa to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$213
(Alaska Airlines)

One-way from

$112
(Alaska Airlines)

Popular in

July

Cheapest in

November

Average price

$574
Provider with most accurate pricing for Santa Rosa Sonoma County-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Denver Intl flights.
Search Deals
From Santa Rosa Sonoma County to Denver Intl
Search Deals
One-way flight from Santa Rosa Sonoma County to Denver Intl
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($158 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Santa Rosa to Denver that are best for you.

Fly from

Santa Rosa

Fly to

Denver

Route

Depart

Return

Price

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Tue 1/20

6:50 am-11:35 pm

2 stops15h 45m

Denver Intl

Tue 1/27

5:09 pm-12:22 pm

2 stops20h 13m

$213

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Sat 1/24

6:50 am-11:35 pm

2 stops15h 45m

Denver Intl

Tue 1/27

5:09 pm-12:22 pm

2 stops20h 13m

$213

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Thu 2/5

6:50 am-11:35 pm

2 stops15h 45m

Denver Intl

Sun 2/8

7:39 pm-11:11 pm

1 stop28h 32m

$228

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Mon 1/12

6:30 pm-11:35 pm

2 stops28h 05m

Denver Intl

Thu 1/22

12:34 pm-11:11 pm

1 stop11h 37m

$228

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Thu 1/22

7:00 am-11:35 pm

2 stops15h 35m

Denver Intl

Tue 1/27

5:09 pm-12:22 pm

2 stops20h 13m

$228

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Tue 2/10

6:50 am-11:35 pm

2 stops15h 45m

Denver Intl

Sat 2/14

7:52 pm-11:50 pm

1 stop28h 58m

$228

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Sat 1/24

6:50 am-11:35 pm

2 stops15h 45m

Denver Intl

Sun 1/25

7:00 am-11:59 pm

1 stop17h 59m

$228

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Fri 1/23

6:30 pm-11:35 pm

2 stops28h 05m

Denver Intl

Sun 1/25

7:00 am-11:59 pm

1 stop17h 59m

$228

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Sat 3/14

7:57 pm-12:14 pm

1 stop15h 17m

Denver Intl

Wed 3/18

7:25 am-7:05 pm

1 stop12h 40m

$242

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Thu 1/22

6:30 pm-11:35 pm

2 stops28h 05m

$112

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 17 results
1
2

Compare providers for flights from Santa Rosa to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Santa Rosa to Denver in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Santa Rosa-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Santa Rosa-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Santa Rosa-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Santa Rosa-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Santa Rosa-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Santa Rosa to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Santa Rosa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Santa Rosa to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Santa Rosa to Denver. Price data was last updated on December 19, 2025.

Booking 40 days in advance of your planned departure date is, on average, the best time to get cheap flights from Santa Rosa to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Santa Rosa to Denver?

Currently, February is the cheapest month in which you can book a flight from Santa Rosa to Denver (average of $28). Flying from Santa Rosa to Denver in June is currently the most expensive (average of $104). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STS to DEN?

Find hourly flight availability from Santa Rosa to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

One of the essential ways to save on airfare from Santa Rosa to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 22% on airfare.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated December 23, 2025.
Read through reviews of airlines operating flights from Santa Rosa to Denver, such as Alaska Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,506 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,506 reviews
Alaska Airlines
8.0
Very good
11,506 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,053 reviews
Alaska Airlines
8.0
Very good
11,506 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Santa Rosa to Denver?

    Airlines like Alaska Airlines fly from Santa Rosa to Denver in about 15h 45m. The time it takes to get you to your destination can typically vary by up to . The distance between Santa Rosa and Denver is about 974 mi.

  • What are the cheapest airlines flying from Santa Rosa to Denver round-trip?

    Our cheapest airline available from Santa Rosa to Denver is Alaska Airlines. Our recent data shows that you can find tickets from as low as $262 on this airline. An additional option worth looking into is American Airlines, starting at $300. Users have found that Alaska Airlines is 43% cheaper than the other options available to this destination.

  • Can I find deals for flights from Santa Rosa to Denver that include hotel bookings?

    Yes. In addition to deals on Santa Rosa to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Santa Rosa to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Rosa to Denver.

  • Can I find deals for business class flights from Santa Rosa to Denver?

    Yes. Cheapflights offers flight deals from Santa Rosa to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, February is the cheapest month in which you can book a flight from Santa Rosa to Denver (average of $28). Flying from Santa Rosa to Denver in June is currently the most expensive (average of $104). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Broomfield
Westminster
Winter Park
Golden
Greeley
Lone Tree
Lakewood
Wheat Ridge
Cripple Creek
Silverthorne
Central City
Frisco
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Evergreen

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Top 2 airlines flying from Santa Rosa to Denver

Discover the top 2 airlines that operate flights from Santa Rosa to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$262Average$485FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$300Average$538FlexibilityNo cancel feeOn-time71%

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