£88 Cheap Flights from Santa Rosa (STS) to Portland (PDX)

View £88 flight on Thu, 4 Dec 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at £88 for one-way flights and £176 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, 23 Oct - Mon, 27 Oct
STS
Santa Rosa
PDX
Portland
£176 Return, found 3 days ago
£176
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 23 Oct from Santa Rosa to Portland, returning Mon, 27 Oct, priced at £176 found 3 days ago
Alaska Airlines
Thu, 23 Oct - Mon, 27 Oct
STS
Santa Rosa
PDX
Portland
£183 Return, found 3 days ago
£183
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 23 Oct from Santa Rosa to Portland, returning Mon, 27 Oct, priced at £183 found 3 days ago
Alaska Airlines
Thu, 23 Oct - Mon, 27 Oct
STS
Santa Rosa
PDX
Portland
£189 Return, found 3 days ago
£189
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 23 Oct from Santa Rosa to Portland, returning Mon, 27 Oct, priced at £189 found 3 days ago
Alaska Airlines
Thu, 23 Oct - Mon, 27 Oct
STS
Santa Rosa
PDX
Portland
£197 Return, found 3 days ago
£197
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 23 Oct from Santa Rosa to Portland, returning Mon, 27 Oct, priced at £197 found 3 days ago
Alaska Airlines
Thu, 23 Oct - Mon, 27 Oct
STS
Santa Rosa
PDX
Portland
£199 Return, found 3 days ago
£199
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 23 Oct from Santa Rosa to Portland, returning Mon, 27 Oct, priced at £199 found 3 days ago
Alaska Airlines
Thu, 12 Feb - Thu, 19 Feb
STS
Santa Rosa
PDX
Portland
£205 Return, found 6 days ago
£205
Return
found 6 days ago
Select Alaska Airlines flight, departing Thu, 12 Feb from Santa Rosa to Portland, returning Thu, 19 Feb, priced at £205 found 6 days ago
Alaska Airlines
Thu, 23 Oct - Mon, 27 Oct
STS
Santa Rosa
PDX
Portland
£214 Return, found 3 days ago
£214
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 23 Oct from Santa Rosa to Portland, returning Mon, 27 Oct, priced at £214 found 3 days ago
Alaska Airlines
Thu, 12 Feb - Thu, 19 Feb
STS
Santa Rosa
PDX
Portland
£219 Return, found 6 days ago
£219
Return
found 6 days ago
Select Alaska Airlines flight, departing Thu, 12 Feb from Santa Rosa to Portland, returning Thu, 19 Feb, priced at £219 found 6 days ago
Alaska Airlines
Thu, 12 Feb - Thu, 19 Feb
STS
Santa Rosa
PDX
Portland
£245 Return, found 6 days ago
£245
Return
found 6 days ago
Select Alaska Airlines flight, departing Thu, 12 Feb from Santa Rosa to Portland, returning Thu, 19 Feb, priced at £245 found 6 days ago
Alaska Airlines
Thu, 23 Oct - Mon, 27 Oct
STS
Santa Rosa
PDX
Portland
£248 Return, found 3 days ago
£248
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 23 Oct from Santa Rosa to Portland, returning Mon, 27 Oct, priced at £248 found 3 days ago

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

January is typically the cheapest month to fly

From £108 - £235 per traveller.

Graph displaying average flight prices per month

Flight from Santa Rosa to Portland route information
Origin airport
Sonoma County
Destination airport
Portland Intl.
Return price
£175
Distance
782 km
Average flight time
1 hour 42 mins

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

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

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 Sonoma County (STS) to Portland Intl. (PDX)

The easiest way to view the best deals on flights from Santa Rosa to Portland 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 Sonoma County to Portland Intl. start at just £176 and range up to £301.  

To find an even better deal, try  

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

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

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Sonoma County to Portland Intl. 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.  

Frequently asked questions

How much is a flight from STS to PDX?
Round-trip journeys from Sonoma County Airport (STS) to PDX Airport start from £176. This price is based on fares offered within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from STS to Portland Intl. Airport (PDX)?
We get that things crop up unexpectedly, so we've made it as hassle-free as possible for you to cancel your flight online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Sonoma County Airport to Portland Intl. Airport (PDX) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Sonoma County Airport to Portland Intl. Airport (PDX) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sonoma County Airport to PDX?
With a flight distance of 790 kilometres, it's just a short hop from Sonoma County Airport to Portland Airport. It might be a quick journey, but it's still worth bringing something to keep you entertained on board.
Which airlines fly direct from STS to PDX Airport?
A favourite with many travellers, Alaska Airlines (AS) operates 30 flights every month from Sonoma County Airport (STS) to PDX. Pick the one that suits your travel plans and book your seat today.
Are Sonoma County Airport to Portland Airport flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Sonoma County Airport (STS) to PDX Airport are available up to a year before departure on Expedia. And although you may pick up a fantastic last-minute deal, it's never something you can count on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid getting trapped in the dreaded middle seat! We're always updating our fares to make sure you get the biggest bargains, so check back often for all the latest specials.

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