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Cheap flights from Portland to San Francisco from $89

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to San Francisco departing on 3/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
3:00 pm - 4:47 pm
PDX
-
STS
1h 47mnonstop
Alaska Airlines Logo
7:30 am - 9:10 am
STS
-
PDX
1h 40mnonstop
$157Alaska Airlines
Wed, Mar 11 - Wed, Mar 18
Alaska Airlines Logo
2:48 pm - 9:22 pm
PDX
-
STS
6h 34m
1 stop
Alaska Airlines Logo
8:20 am - 1:43 pm
STS
-
PDX
5h 23m
1 stop
$177Alaska Airlines
Thu, May 14 - Wed, May 20
Alaska Airlines Logo
3:52 pm - 9:52 pm
PDX
-
STS
6h 00m
1 stop
Alaska Airlines Logo
7:02 pm - 8:45 pm
STS
-
PDX
1h 43mnonstop
$187Alaska Airlines
Wed, Mar 11 - Wed, Mar 18
Alaska Airlines Logo
7:15 am - 9:14 am
PDX
-
STS
1h 59mnonstop
Alaska Airlines Logo
2:56 pm - 4:39 pm
STS
-
PDX
1h 43mnonstop
$197Alaska Airlines
Tue, Mar 17 - Fri, Mar 20
Alaska Airlines Logo
7:00 am - 8:49 am
PDX
-
STS
1h 49mnonstop
Alaska Airlines Logo
8:20 am - 4:49 pm
STS
-
PDX
8h 29m
1 stop
$201Alaska Airlines
Thu, May 14 - Wed, May 20
Alaska Airlines Logo
3:52 pm - 9:52 pm
PDX
-
STS
6h 00m
1 stop
Alaska Airlines Logo
7:00 am - 1:37 pm
STS
-
PDX
6h 37m
1 stop
$207Alaska Airlines
Wed, Mar 11 - Wed, Mar 18
Alaska Airlines Logo
9:35 pm - 11:15 pm
PDX
-
STS
1h 40mnonstop
Alaska Airlines Logo
2:12 pm - 9:28 am
STS
-
PDX
19h 16m
1 stop
$210Alaska Airlines
Wed, Apr 8 - Mon, Apr 13
Alaska Airlines Logo
7:00 am - 2:36 pm
PDX
-
STS
7h 36m
1 stop
Alaska Airlines Logo
7:02 pm - 8:45 pm
STS
-
PDX
1h 43mnonstop
$217Alaska Airlines
Thu, Apr 2 - Sun, Apr 5
Southwest Logo
11:45 am - 10:10 pm
PDX
-
STS
10h 25m
1 stop
Southwest Logo
4:40 pm - 12:55 am
STS
-
PDX
8h 15m
2 stops
$218Southwest
Wed, Apr 8 - Mon, Apr 13
Alaska Airlines Logo
7:15 am - 9:03 am
PDX
-
STS
1h 48mnonstop
Alaska Airlines Logo
7:02 pm - 8:45 pm
STS
-
PDX
1h 43mnonstop
$227Alaska Airlines
Wed, Mar 18 - Thu, Mar 19

Alaska Airlines flights from Portland to Santa Rosa

Our best Alaska Airlines deals on Portland to Santa Rosa flight tickets
Alaska Airlines
Mar 11
PDX3:00 pmPortland
1h 47m
STS4:47 pmSanta Rosa Sonoma County
Mar 18
STS7:30 amSanta Rosa Sonoma County
1h 40m
PDX9:10 amPortland
$157
Alaska Airlines
May 14
PDX2:48 pmPortland
6h 34m
1 stop
STS9:22 pmSanta Rosa Sonoma County
May 20
STS8:20 amSanta Rosa Sonoma County
5h 23m
1 stop
PDX1:43 pmPortland
$177
Alaska Airlines
Mar 11
PDX3:52 pmPortland
6h 00m
1 stop
STS9:52 pmSanta Rosa Sonoma County
Mar 18
STS7:02 pmSanta Rosa Sonoma County
1h 43m
PDX8:45 pmPortland
$187

Southwest flights from Portland to Santa Rosa

Our best Southwest deals on Portland to Santa Rosa flight tickets
Southwest
Apr 8
PDX11:45 amPortland
10h 25m
1 stop
STS10:10 pmSanta Rosa Sonoma County
Apr 13
STS4:40 pmSanta Rosa Sonoma County
8h 15m
2 stops
PDX12:55 amPortland
$218
Southwest
May 19
PDX11:45 amPortland
10h 25m
1 stop
STS10:10 pmSanta Rosa Sonoma County
May 21
STS4:40 pmSanta Rosa Sonoma County
8h 15m
2 stops
PDX12:55 amPortland
$329

momondo 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, momondo users made 832,500 searches. Data last updated February 11, 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

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 3/11

3:00 pm-4:47 pm

Nonstop1h 47m

Santa Rosa Sonoma County

Wed 3/18

7:30 am-9:10 am

Nonstop1h 40m

$157

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Thu 5/14

2:48 pm-9:22 pm

1 stop6h 34m

Santa Rosa Sonoma County

Wed 5/20

8:20 am-1:43 pm

1 stop5h 23m

$177

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

7:02 pm-8:45 pm

Nonstop1h 43m

$187

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Tue 3/17

7:15 am-9:14 am

Nonstop1h 59m

Santa Rosa Sonoma County

Fri 3/20

2:56 pm-4:39 pm

Nonstop1h 43m

$197

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Thu 5/14

7:00 am-8:49 am

Nonstop1h 49m

Santa Rosa Sonoma County

Wed 5/20

8:20 am-4:49 pm

1 stop8h 29m

$201

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

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 4/8

9:35 pm-11:15 pm

Nonstop1h 40m

Santa Rosa Sonoma County

Mon 4/13

2:12 pm-9:28 am

1 stop19h 16m

$210

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Thu 4/2

7:00 am-2:36 pm

1 stop7h 36m

Santa Rosa Sonoma County

Sun 4/5

7:02 pm-8:45 pm

Nonstop1h 43m

$217

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 4/8

11:45 am-10:10 pm

1 stop10h 25m

Santa Rosa Sonoma County

Mon 4/13

4:40 pm-12:55 am

2 stops8h 15m

$218

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 3/18

7:15 am-9:03 am

Nonstop1h 48m

Santa Rosa Sonoma County

Thu 3/19

7:02 pm-8:45 pm

Nonstop1h 43m

$227

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Portland to Santa Rosa

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Portland and Santa Rosa?

What is the cheapest month to fly to Santa Rosa?

If you are unable to visit Santa Rosa during the month of January, then departing from Portland during the month April is also very affordable. Most momondo users find prices during this month for around $237.

What is the cheapest day to depart on your flight to Santa Rosa?

Our data shows that Wednesday is the least expensive day to fly to Santa Rosa. Tickets to fly out on this day can be as low as $242. On the other hand, Friday is the most expensive day to depart from Portland because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $322.

What is the cheapest time of day to depart on your flight to Santa Rosa?

Our data shows that the cheapest Portland to Santa Rosa flights are usually those with departure times in the morning. Our users have found flights to Santa Rosa in the morning for as low as $277. Flights at noon are often more expensive with an average ticket price of $397.

What is the cheapest Portland to Santa Rosa Sonoma County flight route?

Fly from Portland to Santa Rosa Sonoma County for the best Portland - Santa Rosa Sonoma County flight prices

How far in advance should I book a flight to Santa Rosa?

You are more likely to see cheaper flights to Santa Rosa from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Santa Rosa for around $298 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Santa Rosa from Portland for as low as $233 on momondo.

What cabin class options are available on Portland to Santa Rosa Sonoma County flights?

There are 2 cabin classes available to choose from on Portland to Santa Rosa Sonoma County flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Portland to Santa Rosa flight prices changed over time?

As of February 2026, prices for Portland to Santa Rosa flights are approximately 49% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Santa Rosa

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Santa Rosa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Santa Rosa (PDX to STS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Santa Rosa

Best Price Found

$138

Fastest flight time

1h 35m

Direct flights

Every day

Airports in Santa Rosa

1 airport
The best one-way flight to Santa Rosa from Portland in the past 72 hours is $138. The best round-trip flight deal from Portland to Santa Rosa found on momondo in the last 72 hours is $237.
The fastest flight from Portland to Santa Rosa takes 1h 35m
Direct flights go from Portland to Santa Rosa every day.
There is 1 airport in Santa Rosa. From Portland there are direct flights to Santa Rosa Sonoma County (STS).
Search flight deals

  • How far is Portland to Santa Rosa Sonoma County by plane?

    The straight-line distance from Portland to Santa Rosa Sonoma County is 489.0 mi. By plane, this route typically takes 1h 35m.

  • When did momondo last update prices for flights from Portland Airport to Santa Rosa Sonoma County Airport?

    Prices for flights from Portland Airport to Santa Rosa Sonoma County Airport are updated daily.

  • How many operators does momondo search for flights from Portland Airport to Santa Rosa Sonoma County Airport?

  • How old do you have to be to fly from Portland Airport to Santa Rosa Sonoma County Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Santa Rosa Sonoma County Airport.

  • What documentation or ID do you need to fly to Santa Rosa Sonoma County Airport?

    The travel and health documents required for your trip to Santa Rosa Sonoma County Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Santa Rosa Sonoma County Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Portland to Santa Rosa?

  • What is the most popular airline from Portland to Santa Rosa?

Best airlines flying from Portland to Santa Rosa

Compare and see reviews for airlines that fly from Portland to Santa Rosa with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $157Free CancellationRating
8.0
11,874 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $197Free CancellationRating
7.8
2,833 reviews
Search Hawaiian Airlines flights

  • Alaska Airlines Flights From Portland to Santa Rosa

    Across 1 Alaska Airlines flight from Portland to Santa Rosa this week, the average price was $300, with the best Alaska Airlines deals starting from $157 round-trip. 11,875 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • Hawaiian Airlines Flights From Portland to Santa Rosa

    Across 2,833 Hawaiian Airlines reviews on momondo, the average score is 7.8/10. Hawaiian Airlines flies from Portland to Santa Rosa about 1 time each week, with ticket deals ranging from $197 to $329. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Fort Bragg
Mendocino
Ukiah
Little River
Point Arena

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Santa Rosa?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Santa Rosa for you.

Can I find flights from Portland to Santa Rosa with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Santa Rosa from Portland with this policy.

How can momondo help me find flights from Portland to Santa Rosa?

Once you have performed a search for Portland to Santa Rosa flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Portland to Santa Rosa right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Santa Rosa flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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