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$76+ Cheap flights from Portland to Santa Rosa (PDX - STS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — STS
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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Find cheap flights from Portland to Santa Rosa with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Portland to Santa Rosa Sonoma County are usually found in January or April, booked 87 days in advance, depart on a Tuesday or Saturday and return on a Friday

Cheap flight deals from Portland to Santa Rosa

Cheapest flights from Portland to Santa Rosa
Explore the most affordable flight options available from Portland to Santa Rosa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.

This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:50 am
PDX
-
STS
1 stop5h 30m
Southwest
Wed 9/26:00 am
STS
-
PDX
1 stop7h 20m
Southwest
Deal found 7/29$154
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/292:40 pm
PDX
-
STS
1 stop5h 10m
Southwest
Mon 8/316:05 am
STS
-
PDX
1 stop6h 00m
Southwest
Deal found 7/27$157
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/213:40 pm
PDX
-
STS
1 stop6h 55m
Southwest
Mon 8/242:55 pm
STS
-
PDX
2 stops7h 15m
Southwest
Deal found 7/29$172
This Alaska Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:19 pm
PDX
-
STS
Nonstop1h 39m
Alaska Airlines
Tue 9/85:00 pm
STS
-
PDX
Nonstop1h 36m
Alaska Airlines
Deal found 7/30$207
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:49 pm
PDX
-
STS
1 stop6h 01m
Alaska Airlines
Wed 10/218:07 am
STS
-
PDX
Nonstop1h 43m
Alaska Airlines
Deal found 7/28$215
This Trip.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:53 pm
PDX
-
STS
1 stop7h 42m
Alaska Airlines
Sun 9/62:52 pm
STS
-
PDX
Nonstop1h 43m
Alaska Airlines
Deal found 7/28$218

Find flight deals from Portland to Santa Rosa

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Santa Rosa (STS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$154
(Southwest)

One-way from

$76
(Southwest)

Popular in

August

Cheapest in

January

Average price

$372

Good round-trip deal

$307 or less

Good one-way deal

$168 or less
Provider with most accurate pricing for Portland-Santa Rosa Sonoma County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Santa Rosa Sonoma County flights.
Search Deals
From Portland to Santa Rosa Sonoma County
Search Deals
One-way flight from Portland to Santa Rosa Sonoma County
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Portland to Santa Rosa Sonoma County.
Search Deals
Price to beat on a one-way flight from Portland to Santa Rosa Sonoma County.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Santa Rosa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2026.
Use the filters below to find and compare flights from Portland to Santa Rosa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Sat 10/17

7:00 am-8:57 am

Nonstop1h 57m

Santa Rosa Sonoma County

Wed 10/21

2:00 pm-8:30 pm

1 stop6h 30m

$217

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Fri 10/16

2:30 pm-8:20 pm

1 stop5h 50m

Santa Rosa Sonoma County

Mon 10/19

7:00 am-1:35 pm

1 stop6h 35m

$247

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Thu 8/20

5:35 am-2:20 pm

2 stops8h 45m

Santa Rosa Sonoma County

Fri 8/21

2:55 pm-11:15 pm

2 stops8h 20m

$252
Quickest round-trip

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Fri 9/4

7:19 pm-8:58 pm

Nonstop1h 39m

Santa Rosa Sonoma County

Sun 9/6

8:07 am-9:46 am

Nonstop1h 39m

$257

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Tue 8/18

5:40 pm-2:12 pm

1 stop20h 32m

Santa Rosa Sonoma County

Tue 8/25

6:47 pm-9:07 am

2 stops14h 20m

$306

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Thu 8/20

7:30 am-9:15 am

Nonstop1h 45m

Santa Rosa Sonoma County

Fri 8/21

6:13 am-9:30 am

1 stop27h 17m

$320

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Mon 10/5

1:10 pm-11:15 pm

2 stops10h 05m

Santa Rosa Sonoma County

Thu 10/8

6:00 am-12:35 pm

1 stop6h 35m

$327

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Thu 10/15

7:00 am-8:57 am

Nonstop1h 57m

Santa Rosa Sonoma County

Mon 10/19

3:08 pm-4:50 pm

Nonstop1h 42m

$327

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Fri 8/21

6:05 am-2:20 pm

2 stops8h 15m

Santa Rosa Sonoma County

Sat 8/22

6:00 am-4:20 pm

2 stops10h 20m

$337

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Fri 8/21

3:40 pm-10:35 pm

1 stop6h 55m

Santa Rosa Sonoma County

Sun 8/23

7:05 am-12:05 pm

1 stop5h 00m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Portland to Santa Rosa

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Santa Rosa in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Santa Rosa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Santa Rosa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Santa Rosa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Santa Rosa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Santa Rosa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Santa Rosa

Have a flexible travel schedule? Discover the best time to fly to Santa Rosa from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Santa Rosa

How far ahead should I book a flight from Portland to Santa Rosa?

The price you pay for your flight from Portland to Santa Rosa may vary depending on when you book. For the best chance of a lower fare, look to book 25 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Portland to Santa Rosa?

Currently, January is the cheapest month in which you can book a flight from Portland to Santa Rosa (average of $217). Flying from Portland to Santa Rosa in August is currently the most expensive (average of $397). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to STS?

Find hourly flight availability from Portland to Santa Rosa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2026.

It’s optimal to fly from Portland to Santa Rosa in the morning. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight at noon.

How much does it cost to fly round-trip from Portland to Santa Rosa?

Airfare is below average for this route at the moment.

Portland to Santa Rosa flights typically cost between $297 and $397 in August.
The cheapest round-trip price found within the last 5 days was $154 on Southwest (Aug 26-Sep 2).

Reviews of airlines servicing Santa Rosa

Get insights into the airlines that provide service to Santa Rosa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Santa Rosa. Reviews last updated July 30, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines from Portland to Santa Rosa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,734 reviews

Crew

8.5

Overall

7.9

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Alaska Airlines
7.9
Good
12,734 reviews
Alaska Airlines
7.9
Good
12,734 reviews

Crew

8.5

Overall

7.9

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

Related info for your journey

Find useful and relevant information for your journey from Portland to Santa Rosa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Portland to Santa Rosa?

    Santa Rosa Sonoma County is the airport most travelers will use when flying to Santa Rosa from Portland. Booking flights from Portland (PDX) to Sonoma County (STS) should be relatively easy as there are 2 daily flights to Santa Rosa from 1 airline. 1h 39m is how long a flight from Portland to Santa Rosa Sonoma County will take if you book a nonstop flight.

  • How popular is this Portland to Santa Rosa flight route?

    Within the past month, 2 users have taken a look at flights from Portland to Santa Rosa Sonoma County.

  • How long is the flight from Portland to Santa Rosa?

    Airlines like Southwest and Alaska Airlines fly from Portland to Santa Rosa in about 5h 07m. The time it takes to get you to your destination can typically vary by up to 1h 48m. The distance between Portland and Santa Rosa is about 489 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Portland to Santa Rosa round-trip?

    Our cheapest airline available from Portland to Santa Rosa is Alaska Airlines. Our recent data shows that you can find tickets from as low as $157 on this airline. Alaska Airlines is currently priced 49% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Portland to Santa Rosa?

    The top 3 most reliable airlines when flying from Portland to Santa Rosa are Horizon Air (93%), Alaska Airlines (93%) and SkyWest Airlines (93%).

  • What are the cheapest flights from Portland to Santa Rosa?

    The cheapest flight price from Portland to Santa Rosa is $148. On average you can expect to pay $290. The most popular route, (Portland - Santa Rosa Sonoma County), can usually be booked for $154.

  • Can I find deals for flights from Portland to Santa Rosa that include hotel bookings?

    Yes. In addition to deals on Portland to Santa Rosa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Santa Rosa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Santa Rosa.

  • Can I find deals for business class flights from Portland to Santa Rosa?

    Yes. Cheapflights offers flight deals from Portland to Santa Rosa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Santa Rosa?

    Currently, January is the cheapest month in which you can book a flight from Portland to Santa Rosa (average of $217). Flying from Portland to Santa Rosa in August is currently the most expensive (average of $397). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Santa Rosa?

Book flights to Santa Rosa if you plan to visit one of these locations
Fort Bragg
Ukiah

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Top airline flying from Portland to Santa Rosa

Discover the top airline that operate flights from Portland to Santa Rosa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$157Average$310FlexibilityNo cancel feeOn-time75%

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