$341 Cheap Flights from Santa Rosa (STS) to Portland (PWM)

View $341 flight on Mon, Feb 16, 2026Opens in a new window

Popular airlines from Santa Rosa, CA (STS-Sonoma County) to Portland Intl. Jetport Airport (PWM)

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

Prices were available within the past 7 days and start at $341 for one-way flights and $709 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Jan 6 - Sun, Jan 25
STS
Santa Rosa
PWM
Portland
$709 Roundtrip, found 3 days ago
$709
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Santa Rosa to Portland, returning Sun, Jan 25, priced at $709 found 3 days ago
Alaska Airlines
Tue, Jan 6 - Thu, Jan 22
STS
Santa Rosa
PWM
Portland
$749 Roundtrip, found 3 days ago
$749
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Santa Rosa to Portland, returning Thu, Jan 22, priced at $749 found 3 days ago
Alaska Airlines
Tue, Jan 6 - Fri, Jan 23
STS
Santa Rosa
PWM
Portland
$829 Roundtrip, found 3 days ago
$829
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Santa Rosa to Portland, returning Fri, Jan 23, priced at $829 found 3 days ago
Alaska Airlines
Mon, Jan 5 - Sun, Jan 25
STS
Santa Rosa
PWM
Portland
$884 Roundtrip, found 3 days ago
$884
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Jan 5 from Santa Rosa to Portland, returning Sun, Jan 25, priced at $884 found 3 days ago
Alaska Airlines
Tue, Jan 6 - Mon, Jan 19
STS
Santa Rosa
PWM
Portland
$924 Roundtrip, found 3 days ago
$924
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Santa Rosa to Portland, returning Mon, Jan 19, priced at $924 found 3 days ago
Alaska Airlines
Mon, Jan 5 - Fri, Jan 23
STS
Santa Rosa
PWM
Portland
$1,004 Roundtrip, found 3 days ago
$1,004
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Jan 5 from Santa Rosa to Portland, returning Fri, Jan 23, priced at $1,004 found 3 days ago
Alaska Airlines
Mon, Jan 5 - Mon, Jan 19
STS
Santa Rosa
PWM
Portland
$1,099 Roundtrip, found 3 days ago
$1,099
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Jan 5 from Santa Rosa to Portland, returning Mon, Jan 19, priced at $1,099 found 3 days ago
American Airlines
Tue, Dec 30 - Fri, Jan 2
STS
Santa Rosa
PWM
Portland
$1,191 Roundtrip, found 3 days ago
$1,191
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 30 from Santa Rosa to Portland, returning Fri, Jan 2, priced at $1,191 found 3 days ago
Alaska Airlines
Thu, Jan 1 - Thu, Jan 15
STS
Santa Rosa
PWM
Portland
$1,193 Roundtrip, found 3 days ago
$1,193
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Jan 1 from Santa Rosa to Portland, returning Thu, Jan 15, priced at $1,193 found 3 days ago
American Airlines
Tue, Dec 30 - Fri, Jan 2
STS
Santa Rosa
PWM
Portland
$1,256 Roundtrip, found 3 days ago
$1,256
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 30 from Santa Rosa to Portland, returning Fri, Jan 2, priced at $1,256 found 3 days ago
American Airlines
Tue, Dec 30 - Fri, Jan 2
STS
Santa Rosa
PWM
Portland
$1,286 Roundtrip, found 3 days ago
$1,286
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 30 from Santa Rosa to Portland, returning Fri, Jan 2, priced at $1,286 found 3 days ago
American Airlines
Tue, Dec 30 - Fri, Jan 2
STS
Santa Rosa
PWM
Portland
$1,329 Roundtrip, found 3 days ago
$1,329
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 30 from Santa Rosa to Portland, returning Fri, Jan 2, priced at $1,329 found 3 days ago
American Airlines
Tue, Dec 30 - Fri, Jan 2
STS
Santa Rosa
PWM
Portland
$1,367 Roundtrip, found 3 days ago
$1,367
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 30 from Santa Rosa to Portland, returning Fri, Jan 2, priced at $1,367 found 3 days ago

Alternative airports near Portland

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Portland Intl. Jetport PWM. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $924
PWM
Portland Intl. Jetport
CheapestClosest
Average driving time to city center8 min
Flights from $924
Flights from Santa Rosa (STS) to Portland (PWM)
Origin airport
Sonoma County
Destination airport
Portland Intl. Jetport
Roundtrip price
$709
Distance
2711 mi

Santa Rosa to Portland Flights

The cheapest times to fly from Santa Rosa to Portland

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

 

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

Sunday is one of the best days to book for cheap flights from Santa Rosa to Portland: 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 Santa Rosa to Portland

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 Santa Rosa to Portland in 2026. You can also book with separate airlines for your outbound and return journeys, from $341 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 Santa Rosa to Portland 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 Santa Rosa to Portland 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.

 

Frequently asked questions

How much does a flight from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM) cost?
Grab a cheap one-way flight from $341 or cheap return flight from $709 from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM)?
The cheapest month to fly from STS to PWM is January, when there's less demand. Off-peak months are often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from STS to PWM. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM)?
Direct flights from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STS to PWM?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a range of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM)?
Select a flight from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM) that takes off before 3 PM to reduce the likelihood of delays. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM) last-minute?
Holding off until just before your departure to book a ticket from STS to PWM often results in higher prices. While it's possible to find some last-minute deals, they aren't always guaranteed. Be flexible with your travel plans for a better chance of scoring a bargain.
Is it cheaper to book a STS to PWM flight and hotel package?
Opting for a STS to PWM flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our impressive range of accommodations and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sonoma County Airport (STS) to Portland Intl. Jetport Airport (PWM)?
If you booked your STS to PWM flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

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*Available to One Key members.