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$79 Cheap Flights from Portland (PDX) to Santa Rosa (STS)

View $79 flight on Sat, Oct 3, 2026Opens in a new window

Popular airlines from Portland International Airport (PDX) to Santa Rosa, CA (STS-Sonoma County)

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Cheap Flights from Portland to Santa Rosa (PDX-STS)

Prices were available within the past 7 days and start at $79 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sat, Oct 3 - Wed, Oct 7
PDX
Portland
STS
Santa Rosa
$157 Roundtrip, found 2 hours ago
$157
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Sat, Oct 3 from Portland to Santa Rosa, returning Wed, Oct 7, priced at $157 found 2 hours ago
Southwest Airlines
Sat, Oct 3 - Wed, Oct 7
PDX
Portland
STS
Santa Rosa
$162 Roundtrip, found 2 hours ago
$162
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Sat, Oct 3 from Portland to Santa Rosa, returning Wed, Oct 7, priced at $162 found 2 hours ago
Southwest Airlines
Fri, Sep 11 - Mon, Sep 14
PDX
Portland
STS
Santa Rosa
$167 Roundtrip, found 21 hours ago
$167
Roundtrip
found 21 hours ago
Select Southwest Airlines flight, departing Fri, Sep 11 from Portland to Santa Rosa, returning Mon, Sep 14, priced at $167 found 21 hours ago
Southwest Airlines
Sat, Nov 7 - Wed, Nov 11
PDX
Portland
STS
Santa Rosa
$167 Roundtrip, found 6 hours ago
$167
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Sat, Nov 7 from Portland to Santa Rosa, returning Wed, Nov 11, priced at $167 found 6 hours ago
Southwest Airlines
Fri, Sep 25 - Mon, Sep 28
PDX
Portland
STS
Santa Rosa
$172 Roundtrip, found 20 hours ago
$172
Roundtrip
found 20 hours ago
Select Southwest Airlines flight, departing Fri, Sep 25 from Portland to Santa Rosa, returning Mon, Sep 28, priced at $172 found 20 hours ago
Southwest Airlines
Sat, Nov 7 - Wed, Nov 11
PDX
Portland
STS
Santa Rosa
$173 Roundtrip, found 6 hours ago
$173
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Sat, Nov 7 from Portland to Santa Rosa, returning Wed, Nov 11, priced at $173 found 6 hours ago
Southwest Airlines
Sat, Oct 3 - Wed, Oct 7
PDX
Portland
STS
Santa Rosa
$177 Roundtrip, found 2 hours ago
$177
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Sat, Oct 3 from Portland to Santa Rosa, returning Wed, Oct 7, priced at $177 found 2 hours ago
Alaska Airlines
Sat, Oct 3 - Wed, Oct 7
PDX
Portland
STS
Santa Rosa
$200 Roundtrip, found 2 hours ago
$200
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Sat, Oct 3 from Portland to Santa Rosa, returning Wed, Oct 7, priced at $200 found 2 hours ago
Delta
Sat, Nov 7 - Wed, Nov 11
PDX
Portland
STS
Santa Rosa
$277 Roundtrip, found 6 hours ago
$277
Roundtrip
found 6 hours ago
Select Delta flight, departing Sat, Nov 7 from Portland to Santa Rosa, returning Wed, Nov 11, priced at $277 found 6 hours ago
American Airlines
Wed, Oct 28 - Tue, Nov 3
PDX
Portland
STS
Santa Rosa
$463 Roundtrip, found 20 hours ago
$463
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Wed, Oct 28 from Portland to Santa Rosa, returning Tue, Nov 3, priced at $463 found 20 hours ago

Find the cheapest month to fly from Portland (PDX) to Santa Rosa (STS)

September is typically the cheapest month to fly

From $156 - $276 per traveler.

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

Portland (PDX) to Santa Rosa (STS) at a glance

Explore a range of airlines offering flights from Portland International Airport (PDX) to Sonoma County Airport (STS) on this convenient domestic short-haul route. Compare various options, including full-service carriers, to find an itinerary that aligns with your budget and travel schedule. As you plan your trip to discover the iconic sights and neighborhoods of Santa Rosa, you’ll find all the essential details for flights from Portland to Santa Rosa right here.

  • Fastest flight duration: around 1h 45m non-stop
  • Route distance: roughly 500 miles (805 km)
  • Flights per week: around 10 departures on average
  • Typical fares (one-way): economy tickets often range from $75–$370, depending on seasonality and how far ahead you book

Flights from Portland International Airport (PDX) to Sonoma County Airport (STS)

According to recent traveler bookings, the top airlines flying from Portland to Santa Rosa are commonly selected for their non-stop and one-stop options. Popular layover spots include Seattle-Tacoma International Airport (SEA), with about a 1 hour and 15-minute layover, Los Angeles International Airport (LAX), which typically has a 1-hour layover, and Harry Reid International Airport (LAS), offering around a 1 hour and 45-minute layover. These choices allow you to compare prices, total travel times, and cabin classes to craft the ideal itinerary.

  • Alaska Airlines: As a full-service airline, Alaska Airlines provides both non-stop and one-stop options, with one-way ticket prices generally between $75 and $380. This carrier handles around 96% of departures on this route, with a typical non-stop flight lasting 1 hour and 45 minutes.
  • Hawaiian Airlines: Hawaiian Airlines is a full-service provider that exclusively offers non-stop flights, with one-way fares usually falling within the $75 to $300 range. This airline accounts for about 4% of departures, with a total travel duration of 1 hour and 45 minutes.

Travelers flying from Portland to Santa Rosa have the option to upgrade their experience, with Alaska Airlines providing both first class and business class service on this route.

Best time to fly from Portland (PDX) to Santa Rosa (STS)

The most popular months for travelers flying from Portland to Santa Rosa are January, March, and April, when peak temperatures in Santa Rosa reach up to 55.6°F in April. If you prefer quieter travel, consider May, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 60.6°F. For better deals, January usually offers the lowest average one-way fare around $160. Flight availability peaks in March, April, and December, with approximately 11 flights per week, making it easier to find convenient departure times. January and February have the fewest flights, with approximately 8 flights per week.

  • Cheapest time to fly: January usually offers good deals with average one-way fare around $160, roughly 17% cheaper than the yearly average.
  • More budget-friendly months to fly: April and October typically offer average one-way fares roughly ranging from $161 to $175.
  • Most flight options: March, April, and December have the highest number of flights from Portland 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)Moderately High8$160
February49.1°F (9.5°C)Average8$190
March51.1°F (10.6°C)Moderately High11$209
April55.6°F (13.1°C)Moderately High11$161
May60.6°F (15.9°C)Moderately Low9$187
June67.3°F (19.6°C)Average10$216
July69.8°F (21.0°C)Moderately Low9$214
August69.4°F (20.8°C)Average9$200
September68.0°F (20.0°C)Average10$209
October62.1°F (16.7°C)Average9$175
November53.1°F (11.7°C)Moderately Low9$207
December47.3°F (8.5°C)Average11$209

*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 Portland (PDX) to Santa Rosa (STS)

  • Portland to Novato (PDX-NOT): Gnoss Field Airport (NOT) is located approximately 29 miles from Sonoma County Airport (STS).
  • Portland to Napa (PDX-APC): Napa Valley Airport (APC) is roughly 35 miles distant from Sonoma County Airport (STS).

How to find the best prices for flights from Portland (PDX) to Santa Rosa (STS)

Getting some of the best deals on flights from Portland 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 2 to 8 weeks in advance, which coincides with when most travelers make their reservations. Morning departures between 5 AM and 12 PM often provide lower prices and are the most popular flight times. Additionally, flying on Wednesday typically results in cheaper fares, although Friday remains the busiest 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 Portland International Airport

Santa Rosa welcomes travelers from Portland 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 for travelers looking to continue their journey.

Frequently asked questions

How much does a flight from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County) cost?
You can find cheap one-way flights from $79 and cheap return flights from $157 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County) with Expedia. One-way flights usually range from $164 to $704, and return flights typically cost between $245 and $1133. 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 Portland, OR (PDX-Portland 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 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The cheapest month to fly from PDX 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 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Enter PDX to STS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Alaska Airlines is one of the cheapest airlines offering nonstop flights from Portland Intl. (PDX) to Sonoma County (STS), with round-trip tickets starting from around $448. 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 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
To find a cheap flight from Portland, OR (PDX-Portland 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 airline to fly with from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The best airline to fly with from Portland, OR (PDX) to Santa Rosa, CA (STS) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, Alaska Airlines typically offers the lowest fares. United offers the most daily flights from PDX to STS, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Portland, OR (PDX-Portland 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.
What is the earliest flight from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The earliest flight from Portland, OR (PDX) to Santa Rosa, CA (STS) typically leaves at around 12:55 AM, operated by American Airlines. This seasonal service is available in November, giving you a chance to start your journey early. 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 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The most popular departure times for flights from Portland (PDX) to Santa Rosa (STS) are in the early morning, from 6am to 9am. About 38% of passengers prefer this time window. Many major carriers, including Alaska Airlines and American Airlines, offer flights during this window. This timing is favored as it allows you to make the most of your day in Santa Rosa.
How long does it take to fly from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
A nonstop flight from PDX to STS typically takes around 1 hour 50 minutes, covering approximately 489 miles. Connecting flights on this route usually add 8 hours 40 minutes to your travel time. 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 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
You can fly first class between PDX and STS. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How much is a business class flight from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
A non-stop, one-way business class flight from Portland, OR (PDX) to Santa Rosa, CA (STS) is usually around $298 - $488. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County) flight with Expedia?
It's easy to earn miles on a Portland, OR (PDX-Portland 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 Portland Intl. (PDX)?
From Portland Intl. (PDX), you can fly into Sonoma County (STS) to reach Santa Rosa. Some flights may connect through major hubs like San Francisco Intl. (SFO), Seattle - Tacoma Intl. (SEA), 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 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County) at the last minute?
Typically, booking a last minute flight from Portland, OR (PDX-Portland 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 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County) flight and hotel package?
Securing a Portland, OR (PDX-Portland 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 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
If you booked your Portland, OR (PDX-Portland 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
Portland Intl.
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines
Roundtrip price
$156
Distance
489 mi
Average flight time
1 hour 43 mins

Book with confidence

Portland to Santa Rosa Flights

The cheapest times to fly from Portland 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 Portland to Santa Rosa are during the month of October. You can find some of the cheapest flights from Portland to Santa Rosa with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Portland 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 Portland 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 Portland to Santa Rosa in 2026. You can also book with separate airlines for your outbound and return journeys, from $79 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 Portland 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 Portland 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.

 

Portland to Santa Rosa Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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