HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Santa Rosa

$89+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — STS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Santa Rosa with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Portland to Santa Rosa Sonoma County are usually found in January or April, booked 81 days in advance, depart on a Wednesday or Saturday and return on a Wednesday

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 January 29, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:15 am
PDX
-
STS
Nonstop1h 59m
Alaska Airlines
Mon 2/238:00 am
STS
-
PDX
Nonstop1h 44m
Alaska Airlines
Deal found 1/27$157
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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.
Wed 4/81:35 pm
PDX
-
STS
1 stop4h 26m
Alaska Airlines
Wed 4/157:00 am
STS
-
PDX
1 stop6h 37m
Alaska Airlines
Deal found 1/28$177
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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.
Wed 3/187:15 am
PDX
-
STS
Nonstop1h 48m
Alaska Airlines
Wed 3/252:56 pm
STS
-
PDX
Nonstop1h 43m
Alaska Airlines
Deal found 1/28$187
This Southwest deal was found by Cheapflights users on 1/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:45 am
PDX
-
STS
1 stop10h 25m
Southwest
Wed 4/156:00 am
STS
-
PDX
2 stops7h 40m
Southwest
Deal found 1/28$188
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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.
Wed 2/183:00 pm
PDX
-
STS
Nonstop1h 47m
Alaska Airlines
Wed 2/186:50 pm
STS
-
PDX
Nonstop1h 46m
Alaska Airlines
Deal found 1/28$192
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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.
Sun 2/227:15 am
PDX
-
STS
Nonstop1h 59m
Alaska Airlines
Wed 2/256:50 pm
STS
-
PDX
Nonstop1h 46m
Alaska Airlines
Deal found 1/28$197
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/113:52 pm
PDX
-
STS
1 stop6h 00m
Alaska Airlines
Wed 3/187:00 am
STS
-
PDX
1 stop6h 37m
Alaska Airlines
Deal found 1/27$207
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:15 am
PDX
-
STS
Nonstop1h 59m
Alaska Airlines
Mon 2/237:48 pm
STS
-
PDX
1 stop13h 47m
Alaska Airlines
Deal found 1/27$210
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:15 am
PDX
-
STS
Nonstop1h 59m
Alaska Airlines
Fri 3/206:53 pm
STS
-
PDX
1 stop13h 17m
Alaska Airlines
Deal found 1/27$215
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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.
Fri 3/69:30 pm
PDX
-
STS
1 stop12h 41m
Alaska Airlines
Mon 3/98:00 am
STS
-
PDX
Nonstop1h 44m
Alaska Airlines
Deal found 1/28$220
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:15 am
PDX
-
STS
Nonstop1h 59m
Alaska Airlines
Mon 3/167:48 pm
STS
-
PDX
1 stop13h 47m
Alaska Airlines
Deal found 1/27$226

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$157
(Alaska Airlines)

One-way from

$89
(Alaska Airlines)

Popular in

July

Cheapest in

January

Average price

$219

Good round-trip deal

$222 or less

Good one-way deal

$103 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. 7% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 29, 2026.
Use the filters below to find and compare flights from Portland to Santa Rosa that are best for you.

Fly from

Portland

Fly to

Santa Rosa

Route

Depart

Return

Price

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Tue 3/17

7:15 am-9:14 am

Nonstop1h 59m

Santa Rosa Sonoma County

Sun 3/22

7:02 pm-8:45 pm

Nonstop1h 43m

$157

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Mon 3/16

7:15 am-9:14 am

Nonstop1h 59m

Santa Rosa Sonoma County

Wed 3/25

2:56 pm-4:39 pm

Nonstop1h 43m

$157

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Sat 3/7

7:15 am-9:14 am

Nonstop1h 59m

Santa Rosa Sonoma County

Sat 3/14

6:50 pm-8:36 pm

Nonstop1h 46m

$157

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Sun 3/1

7:15 am-9:14 am

Nonstop1h 59m

Santa Rosa Sonoma County

Sat 3/7

8:00 am-9:44 am

Nonstop1h 44m

$157

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Tue 3/17

7:15 am-9:14 am

Nonstop1h 59m

Santa Rosa Sonoma County

Sat 3/21

2:56 pm-4:39 pm

Nonstop1h 43m

$157

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Fri 2/27

7:15 am-9:14 am

Nonstop1h 59m

Santa Rosa Sonoma County

Fri 3/6

8:00 am-9:44 am

Nonstop1h 44m

$157

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 4/8

1:35 pm-6:01 pm

1 stop4h 26m

Santa Rosa Sonoma County

Wed 4/15

7:30 am-9:10 am

Nonstop1h 40m

$187

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Thu 5/14

7:00 am-8:49 am

Nonstop1h 49m

Santa Rosa Sonoma County

Wed 5/20

8:00 am-9:45 am

Nonstop1h 45m

$187

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Tue 3/24

3:26 pm-5:10 pm

Nonstop1h 44m

Santa Rosa Sonoma County

Wed 3/25

2:56 pm-4:39 pm

Nonstop1h 43m

$197

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 3/11

3:52 pm-9:52 pm

1 stop6h 00m

Santa Rosa Sonoma County

Wed 3/18

7:00 am-1:37 pm

1 stop6h 37m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 19 results
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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust 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?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Santa Rosa. Price data was last updated on January 23, 2026.

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 81 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 $37). Flying from Portland to Santa Rosa in November is currently the most expensive (average of $115). 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 January 29, 2026.

It’s optimal to fly from Portland to Santa Rosa in the evening. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight at noon.

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 January 29, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines and Hawaiian 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
8.0
Very good
11,808 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,808 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Hawaiian Airlines
7.8
Good
2,830 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 2 different airlines. 1h 37m 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, 11 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 Alaska Airlines fly from Portland to Santa Rosa in about 1h 59m. The time it takes to get you to your destination is usually consistent. The distance between Portland and Santa Rosa is about 489 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying 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. An additional option worth looking into is Hawaiian Airlines, starting at $197. Alaska Airlines is currently priced 46% 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 Alaska Airlines (78%), Horizon Air (77%) and SkyWest Airlines (68%).

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

    The cheapest flight price from Portland to Santa Rosa is $93. On average you can expect to pay $292. The most popular route, (Portland - Santa Rosa Sonoma County), can usually be booked for $157.

  • 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 $37). Flying from Portland to Santa Rosa in November is currently the most expensive (average of $115). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Santa Rosa

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Los Angeles flights
Portland to Las Vegas flights
Portland to San Francisco flights
Portland to Palm Springs flights
Boise to Las Vegas flights
Portland to Ontario flights
Portland to San Diego flights
Portland to Oakland flights
Portland to San Jose flights
Boise to Los Angeles flights
Portland to Santa Ana flights
Eugene to Las Vegas flights
Portland to Burbank flights
Boise to San Diego flights
Eugene to San Francisco flights
Eugene to Los Angeles flights
Boise to San Francisco flights
Eugene to San Diego flights
Boise to Ontario flights
Boise to Santa Ana flights
Redmond to Los Angeles flights
Portland to Sacramento flights
Redmond to San Francisco flights
Portland to Long Beach flights
Redmond to Las Vegas flights
Portland to Reno flights
Eugene to Ontario flights
Boise to Sacramento flights
Redmond to Santa Ana flights
Boise to Burbank flights
Medford to Los Angeles flights
Redmond to San Diego flights
Redmond to Palm Springs flights
Portland to San Luis Obispo flights
Boise to Palm Springs flights
Redmond to Ontario flights
Boise to San Jose flights
Portland to Santa Barbara flights
Eugene to Burbank flights
Portland to Medford flights
Portland to Monterey flights
Eugene to Sacramento flights
Eugene to Santa Ana flights
Portland to Fresno flights
Medford to Las Vegas flights
Eugene to Palm Springs flights
Eugene to Oakland flights
Medford to Ontario flights
Eugene to San Jose flights

Top 2 airlines flying from Portland to Santa Rosa

Discover the top 2 airlines 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$157Average$301FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$197Average$329FlexibilityNo cancel feeOn-time85%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.