£96 Cheap Flights from Portland (PDX) to Santa Rosa (STS)

View £96 flight on Sun, 24 May 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 (PDX) to Santa Rosa (STS)

Prices were available within the past 7 days and start at £96 for one-way flights and £220 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
PDX
Portland
STS
Santa Rosa
£220 Return, found 1 day ago
£220
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Portland to Santa Rosa, returning Wed, 24 Jun, priced at £220 found 1 day ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
PDX
Portland
STS
Santa Rosa
£250 Return, found 1 day ago
£250
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Portland to Santa Rosa, returning Fri, 19 Jun, priced at £250 found 1 day ago
Alaska Airlines
Mon, 15 Jun - Sat, 20 Jun
PDX
Portland
STS
Santa Rosa
£256 Return, found 4 days ago
£256
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 15 Jun from Portland to Santa Rosa, returning Sat, 20 Jun, priced at £256 found 4 days ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
PDX
Portland
STS
Santa Rosa
£257 Return, found 1 day ago
£257
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Portland to Santa Rosa, returning Wed, 24 Jun, priced at £257 found 1 day ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
PDX
Portland
STS
Santa Rosa
£271 Return, found 1 day ago
£271
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Portland to Santa Rosa, returning Wed, 24 Jun, priced at £271 found 1 day ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
PDX
Portland
STS
Santa Rosa
£272 Return, found 1 day ago
£272
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Portland to Santa Rosa, returning Wed, 24 Jun, priced at £272 found 1 day ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
PDX
Portland
STS
Santa Rosa
£279 Return, found 1 day ago
£279
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Portland to Santa Rosa, returning Thu, 18 Jun, priced at £279 found 1 day ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
PDX
Portland
STS
Santa Rosa
£286 Return, found 1 day ago
£286
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Portland to Santa Rosa, returning Fri, 19 Jun, priced at £286 found 1 day ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
PDX
Portland
STS
Santa Rosa
£290 Return, found 1 day ago
£290
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Portland to Santa Rosa, returning Wed, 24 Jun, priced at £290 found 1 day ago
Alaska Airlines
Mon, 15 Jun - Sat, 20 Jun
PDX
Portland
STS
Santa Rosa
£294 Return, found 4 days ago
£294
Return
found 4 days ago
Select Alaska Airlines flight, departing Mon, 15 Jun from Portland to Santa Rosa, returning Sat, 20 Jun, priced at £294 found 4 days ago

Frequently asked questions

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-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County) will differ from traveller to traveller. If you like to fly early, AS offers early morning flights. If price is the most important factor, AS typically offers the lowest fares. WN offers the most daily flights from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County), which is brilliant 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.
How many flights per day from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
There are approximately 16 connecting flights per day from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County). Some common connection points include Sacramento Intl. (SMF), McCarran Intl. (LAS), and Sky Harbor Intl. (PHX).
What is the earliest flight from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
The earliest flight from Portland Intl. (PDX) to Sonoma County (STS) typically departs at approximately 12:40 AM local time. This is a seasonal service active in June, operated by American Airlines. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
You'll find the most flights from Portland Intl. (PDX) to Sonoma County (STS) on a Friday, with around 16 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, Southwest Airlines, and American Airlines. Flight options are notably more plentiful on Fridays compared to other days of the week.
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, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County) are in the early morning, from 6am to 9am. About 37% of passengers prefer this time. Many major carriers, including Alaska Airlines and American Airlines, offer flights during this window. This timing works well because it allows you to start your travel day early and arrive at your destination with plenty of time to spare.
How long does it take to fly from Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Direct flights from PDX to STS usually take about 1 hour 50 minutes, traveling roughly 489 miles. If you opt for a connecting flight, expect to add around 8 hours 40 minutes 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 Portland, OR (PDX-Portland Intl.) to Santa Rosa, CA (STS-Sonoma County)?
Select the "Business class" and "First class" filters when looking for PDX to STS flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
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)?
If you're planning to travel to Santa Rosa from Portland Intl. (PDX), you can fly directly into Sonoma County (STS) Some flights may connect through major hubs like San Francisco Intl. (SFO), Salt Lake City Intl. (SLC), Sacramento Intl. (SMF) 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
Return price
£219
Distance
782 km
Average flight time
1 hour 45 mins

Book with confidence

Compare flights from Portland to Santa Rosa easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Portland to Santa Rosa. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Sonoma County in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Portland Intl. to Sonoma County.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Portland Intl. (PDX) to Sonoma County (STS)

The easiest way to view the best deals on flights from Portland to Santa Rosa today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Portland Intl. to Sonoma County start at just £220 and range up to £294.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Portland and Santa Rosa
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Portland to Santa Rosa flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Portland Intl. to Sonoma County for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Portland to Santa Rosa easily and book with confidence

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