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$109+ 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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
STS — DEN
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Cheapflights Tip: The best prices from Santa Rosa Sonoma County to Denver Intl are usually found in February or September, booked 40 days in advance, depart on a Thursday or Tuesday and return on a Sunday

Cheap 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 November 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$194
(CheapTickets)

One-way from

$109
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$489
Provider with most accurate pricing for Santa Rosa Sonoma County-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Denver Intl flights.
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From Santa Rosa Sonoma County to Denver Intl
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One-way flight from Santa Rosa Sonoma County to Denver Intl
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Highest demand for flights based on searches. 21% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 6, 2025.

This CheapTickets deal was found by Cheapflights users on 11/6. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:28 amSTS - DEN
1 stop6h 38mMultiple Airlines
Wed 12/1011:11 amDEN - STS
1 stop8h 03mMultiple Airlines
Deal found 11/6$194
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 12/36:43 pmSTS - DEN
1 stop23h 41mHawaiian Airlines
Wed 12/1010:05 amDEN - STS
1 stop5h 31mHawaiian Airlines
Deal found 11/5$211
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/36:43 pmSTS - DEN
1 stop23h 41mHawaiian Airlines
Tue 12/96:59 pmDEN - STS
1 stop4h 55mHawaiian Airlines
Deal found 11/6$219
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
Thu 12/182:51 pmSTS - DEN
1 stop8h 08mAlaska Airlines
Wed 1/712:34 pmDEN - STS
1 stop7h 45mAlaska Airlines
Deal found 11/6$220
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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 12/36:43 pmSTS - DEN
1 stop23h 41mAlaska Airlines
Tue 12/96:59 pmDEN - STS
1 stop4h 55mAlaska Airlines
Deal found 11/6$221
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/36:43 pmSTS - DEN
1 stop23h 41mMultiple Airlines
Tue 12/96:45 amDEN - STS
2 stops13h 30mMultiple Airlines
Deal found 11/6$233
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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 12/36:43 pmSTS - DEN
1 stop23h 41mAlaska Airlines
Wed 12/106:45 amDEN - STS
2 stops13h 30mAlaska Airlines
Deal found 11/5$234
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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 12/178:00 amSTS - DEN
1 stop10h 24mAlaska Airlines
Wed 1/712:34 pmDEN - STS
1 stop7h 45mAlaska Airlines
Deal found 11/6$236

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 November 6, 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

Sun 2/8

6:52 pm-11:38 am

1 stop15h 46m

Denver Intl

Tue 2/10

12:34 pm-7:19 pm

1 stop7h 45m

$220

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Thu 1/8

9:38 am-6:41 pm

1 stop8h 03m

Denver Intl

Tue 1/13

12:34 pm-7:19 pm

1 stop7h 45m

$220

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Thu 2/5

9:38 am-6:41 pm

1 stop8h 03m

Denver Intl

Tue 2/10

12:34 pm-7:19 pm

1 stop7h 45m

$220

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Wed 2/4

2:30 pm-11:58 pm

1 stop8h 28m

Denver Intl

Tue 2/10

12:34 pm-7:19 pm

1 stop7h 45m

$220

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Fri 1/9

9:38 am-6:41 pm

1 stop8h 03m

Denver Intl

Tue 1/13

12:34 pm-7:19 pm

1 stop7h 45m

$220

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Thu 12/18

2:51 pm-11:59 pm

1 stop8h 08m

Denver Intl

Thu 1/8

8:04 am-2:29 pm

1 stop7h 25m

$220

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Thu 2/5

9:38 am-6:41 pm

1 stop8h 03m

Denver Intl

Mon 2/9

8:04 am-2:29 pm

1 stop7h 25m

$220

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Fri 2/6

9:38 am-6:41 pm

1 stop8h 03m

Denver Intl

Mon 2/9

8:04 am-2:29 pm

1 stop7h 25m

$220

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Sat 1/31

9:38 am-11:58 pm

1 stop13h 20m

Denver Intl

Mon 2/2

12:34 pm-11:11 pm

1 stop11h 37m

$220

Santa RosaDenver

STS - DEN

STSDEN

Santa Rosa Sonoma County

Wed 12/3

6:43 pm-7:24 pm

1 stop23h 41m

Denver Intl

Tue 12/9

6:45 am-7:23 pm

2 stops13h 38m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 21 results
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2
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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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Santa Rosa-Denver flight deals on Cheapflights vs. FlightHub >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 Expedia the most. Expedia 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 October 31, 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 $102). 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 November 6, 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.

How much does it cost to fly round-trip from Santa Rosa to Denver?

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 November 6, 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
11,243 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,243 reviews
Alaska Airlines
8.0
Very good
11,243 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
11,041 reviews
Alaska Airlines
8.0
Very good
11,243 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 46m. 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 46% 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 $102). 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
Black Hawk
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Wheat Ridge
Central City
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker
Sterling

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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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$262Average$476FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$300Average$538FlexibilityNo cancel feeOn-time71%

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