A vineyard with rows of grapevines, a dirt path, and a backdrop of rolling hills and trees.

$162 Cheap Flights from Denver (DEN) to Santa Rosa (STS)

View $162 flight on Sat, Oct 31, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Santa Rosa, CA (STS-Sonoma County)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Denver to Santa Rosa (DEN-STS)

Prices were available within the past 7 days and start at $162 for one-way flights and $298 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Oct 21 - Sat, Oct 24
DEN
Denver
STS
Santa Rosa
$298 Roundtrip, found 4 days ago
$298
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed, Oct 21 from Denver to Santa Rosa, returning Sat, Oct 24, priced at $298 found 4 days ago
Southwest Airlines
Wed, Oct 21 - Sat, Oct 24
DEN
Denver
STS
Santa Rosa
$299 Roundtrip, found 4 days ago
$299
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Wed, Oct 21 from Denver to Santa Rosa, returning Sat, Oct 24, priced at $299 found 4 days ago
Southwest Airlines
Tue, Oct 27 - Sat, Oct 31
DEN
Denver
STS
Santa Rosa
$308 Roundtrip, found 3 days ago
$308
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Tue, Oct 27 from Denver to Santa Rosa, returning Sat, Oct 31, priced at $308 found 3 days ago
Alaska Airlines
Fri, Oct 23 - Mon, Oct 26
DEN
Denver
STS
Santa Rosa
$311 Roundtrip, found 5 days ago
$311
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Oct 23 from Denver to Santa Rosa, returning Mon, Oct 26, priced at $311 found 5 days ago
Alaska Airlines
Tue, Oct 27 - Wed, Nov 4
DEN
Denver
STS
Santa Rosa
$314 Roundtrip, found 2 days ago
$314
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Oct 27 from Denver to Santa Rosa, returning Wed, Nov 4, priced at $314 found 2 days ago
Alaska Airlines
Sat, Nov 14 - Tue, Nov 17
DEN
Denver
STS
Santa Rosa
$320 Roundtrip, found 6 days ago
$320
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Nov 14 from Denver to Santa Rosa, returning Tue, Nov 17, priced at $320 found 6 days ago
Southwest Airlines
Tue, Oct 6 - Sat, Oct 17
DEN
Denver
STS
Santa Rosa
$328 Roundtrip, found 3 days ago
$328
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Tue, Oct 6 from Denver to Santa Rosa, returning Sat, Oct 17, priced at $328 found 3 days ago
Delta
Tue, Oct 6 - Sat, Oct 17
DEN
Denver
STS
Santa Rosa
$329 Roundtrip, found 3 days ago
$329
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Oct 6 from Denver to Santa Rosa, returning Sat, Oct 17, priced at $329 found 3 days ago
American Airlines
Wed, Sep 30 - Wed, Oct 7
DEN
Denver
STS
Santa Rosa
$333 Roundtrip, found 2 days ago
$333
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Sep 30 from Denver to Santa Rosa, returning Wed, Oct 7, priced at $333 found 2 days ago
Alaska Airlines
Wed, Oct 21 - Wed, Oct 28
DEN
Denver
STS
Santa Rosa
$334 Roundtrip, found 2 days ago
$334
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Oct 21 from Denver to Santa Rosa, returning Wed, Oct 28, priced at $334 found 2 days ago

What you need to know for your flight from Denver Intl. to Sonoma County

Denver (DEN) to Santa Rosa (STS) at a glance

Travel between Denver (DEN) and Santa Rosa (STS) with a range of airlines operating on this domestic short-haul route. You can explore various options, from full-service to budget-friendly carriers, allowing you to select the best itinerary based on your budget, schedule, and travel preferences. Discover the essential details for flights from Denver International Airport to Sonoma County Airport as you plan your visit to Santa Rosa’s renowned attractions and neighborhoods.

  • Fastest flight duration: around 4h 30m in-flight, plus roughly 1h 15m layover with one stop
  • Route distance: roughly 1,000 miles (1,610 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $135–$600, depending on seasonality and how far ahead you book

Flights from Denver International Airport (DEN) to Sonoma County Airport (STS)

Based on the latest traveler bookings, here are the top airlines favored for one-stop service from Denver to Santa Rosa. Popular layover points include Sky Harbor International Airport (PHX) with about a 1h 15m layover, San Diego International Airport (SAN) also featuring a 1h 15m layover, and Seattle-Tacoma International Airport (SEA) with a 1h 30m layover. These options provide flexibility to help you balance price, total travel time, and cabin class as you search for the ideal itinerary.

  • Alaska Airlines: As a full-service airline, Alaska Airlines provides one-stop flights, with one-way ticket prices generally falling between $135 and $510. This airline accounts for around 44% of the departures on this route, offering an in-flight duration of 4 hours and 30 minutes, leading to a total travel time of about 6 hours, including layover.
  • American Airlines: Another full-service option, American Airlines features one-stop flights with one-way fares typically ranging from $155 to $585. It comprises roughly 43% of the departures for this route, with a flight time of 4 hours and 30 minutes and an overall journey time of approximately 6 hours, factoring in a layover.
  • United: United Airlines operates as a full-service carrier with one-stop service, offering one-way fares that usually range from $395 to $905. It represents about 7% of the departures on this route, with an in-flight duration of 4 hours and 30 minutes and a total journey time of nearly 6 hours, including layover.
  • Southwest Airlines: This low-cost airline provides one-stop service, with one-way fares typically between $175 and $340. Southwest accounts for approximately 6% of the departures on this route, featuring an in-flight time of 4 hours and 30 minutes, resulting in a total travel time of roughly 6 hours including a layover.

Best time to fly from Denver (DEN) to Santa Rosa (STS)

The most popular months for travelers flying from Denver to Santa Rosa are March, April, and November, when peak temperatures in Santa Rosa reach up to 55.6°F in April. If you prefer quieter travel, consider January, the least busy time to visit with temperatures around 48.2°F and typically the lowest average one-way fare (around $221). Flight availability peaks in February, with approximately 11 flights per week, making it easier to find convenient departure times. May, June, July, and August have the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: January usually offers good deals with average one-way fare around $221, roughly 29% cheaper than the yearly average.
  • Another budget-friendly time to fly: March typically offers an average one-way fare of around $232.
  • Most flight options: February has the highest number of flights from Denver to Santa Rosa, with approximately 11 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January48.2°F (9.0°C)Low8$221
February49.1°F (9.5°C)Average11$354
March51.1°F (10.6°C)High8$232
April55.6°F (13.1°C)High9$252
May60.6°F (15.9°C)Average7$269
June67.3°F (19.6°C)Low7$297
July69.8°F (21.0°C)Low7$330
August69.4°F (20.8°C)Average7$333
September68.0°F (20.0°C)Average8$345
October62.1°F (16.7°C)Average8$367
November53.1°F (11.7°C)High8$326
December47.3°F (8.5°C)Average8$455

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Denver (DEN) to Santa Rosa (STS)

  • Denver to Santa Rosa (APA-STS): Located approximately 21 miles from Denver International Airport (DEN), Centennial Airport (APA) serves as a convenient departure point.
  • Denver to Napa (DEN-APC): Napa Valley Airport (APC) lies about 35 miles from Sonoma County Airport (STS), offering easy access to the region.
  • Colorado Springs to Santa Rosa (COS-STS): Colorado Springs Airport (COS) is situated roughly 73 miles from Denver International Airport (DEN), providing a viable travel option.

How to find the best prices for flights from Denver (DEN) to Santa Rosa (STS)

Getting some of the best deals on flights from Denver to Santa Rosa is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, although most travelers tend to book 2-8 weeks ahead. Evening departures between 6 PM and 12 AM often offer lower prices, while morning flights from 5 AM to 12 PM are the most popular. Additionally, flying on Tuesday provides both cheaper prices and is the most favored travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Santa Rosa hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Sonoma County Airport from Denver International Airport

Santa Rosa welcomes travelers from Denver with a range of transport options based on price, convenience, and proximity. Santa Rosa city center is approximately a 10-minute drive (covering about 9 miles) from Sonoma County Airport, depending on traffic. Here's how to reach Santa Rosa efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Santa Rosa, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from Sonoma County Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Sonoma County Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Sonoma County Airport, Santa Rosa Station, a train station, is located about 7.6 miles away by car, providing convenient access to rail services for your onward journey.

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) cost?
You can find cheap one-way flights from $162 and cheap return flights from $298 Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) with Expedia. One-way flights typically cost between $217 and $1047, and return flights often range between $389 and $1353. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The cheapest month to fly from DEN to STS is October when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Enter DEN to STS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Southwest Airlines is one of the cheapest airlines offering nonstop flights from Denver Intl. (DEN) to Sonoma County (STS) starting from around $421. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
There are approximately 1 nonstop flights per day from Denver Intl. (DEN) to Sonoma County (STS). For more options, look at flights that include layovers.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The earliest flight from Denver International Airport (DEN) to Sonoma County Airport (STS) typically departs at around 5:00 AM local time, operated by American Airlines. This seasonal service is active during the summer months of May, June, July, and August, making it perfect for early travelers looking to enjoy the beautiful California wine country. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The most popular departure times for flights from Denver Intl. (DEN) to Sonoma County (STS) are in the early morning, from 6am to 9am. About 37% of travelers prefer this time window. Many major carriers, including American Airlines, offer flights during this period. This timing is ideal as it lets you start your day early and arrive in Santa Rosa with plenty of time to enjoy.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Direct flights from DEN to STS usually take about 2 hours 30 minutes, traveling roughly 974 miles. If you opt for a connecting flight, expect to add around 3 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
First class is available on flights from DEN to STS. First class cabins are available on:

  • American Airlines
  • United Airlines
  • Delta Air Lines

How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Santa Rosa from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly into Sonoma County (STS) to reach Santa Rosa. Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), Salt Lake City Intl. (SLC) before reaching Santa Rosa. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County)?
If you booked your Denver, CO (DEN-Denver Intl.) to Santa Rosa, CA (STS-Sonoma County) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Denver Intl.
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines
Roundtrip price
$298
Distance
973 mi
Average flight time
2 hours 11 mins

Book with confidence

Denver to Santa Rosa Flights

The cheapest times to fly from Denver to Santa Rosa

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Santa Rosa are during the month of October. You can find some of the cheapest flights from Denver to Santa Rosa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Santa Rosa

Sunday is one of the best days to book for cheap flights from Denver to Santa Rosa: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Santa Rosa

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Santa Rosa in 2026. You can also book with separate airlines for your outbound and return journeys, from $162 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Santa Rosa flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Santa Rosa airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Denver to Santa Rosa Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia