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Cheap flights from Portland to San Francisco from $79

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 10/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Portland to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
2:40 pm - 7:50 pm
PDX
-
STS
5h 10m
1 stop
Southwest Logo
6:00 am - 1:20 pm
STS
-
PDX
7h 20m
1 stop
$157Southwest
Sat, Sep 5 - Wed, Sep 9
Southwest Logo
2:40 pm - 7:50 pm
PDX
-
STS
5h 10m
1 stop
Southwest Logo
2:55 pm - 11:05 pm
STS
-
PDX
8h 10m
1 stop
$162Southwest
Sat, Aug 22 - Thu, Aug 27
Southwest Logo
11:20 am - 7:50 pm
PDX
-
STS
8h 30m
2 stops
Southwest Logo
2:55 pm - 11:15 pm
STS
-
PDX
8h 20m
2 stops
$167Southwest
Sat, Aug 22 - Thu, Aug 27
Southwest Logo
3:40 pm - 10:35 pm
PDX
-
STS
6h 55m
1 stop
Southwest Logo
2:55 pm - 11:15 pm
STS
-
PDX
8h 20m
2 stops
$172Southwest
Fri, Aug 21 - Mon, Aug 24
Southwest Logo
5:50 am - 11:20 am
PDX
-
STS
5h 30m
1 stop
Southwest Logo
2:00 pm - 9:05 pm
STS
-
PDX
7h 05m
1 stop
$197Southwest
Wed, Sep 9 - Sat, Sep 12
Southwest Logo
11:35 am - 9:25 pm
PDX
-
STS
9h 50m
2 stops
Southwest Logo
12:45 pm - 9:20 pm
STS
-
PDX
8h 35m
1 stop
$202Southwest
Wed, Sep 9 - Sat, Sep 12
Southwest Logo
11:35 am - 9:25 pm
PDX
-
STS
9h 50m
2 stops
Southwest Logo
6:00 am - 4:20 pm
STS
-
PDX
10h 20m
2 stops
$207Southwest
Wed, Sep 9 - Sat, Sep 12
Southwest Logo
6:20 am - 12:05 pm
PDX
-
STS
5h 45m
1 stop
Southwest Logo
2:55 pm - 11:05 pm
STS
-
PDX
8h 10m
1 stop
$212Southwest
Sat, Aug 22 - Thu, Aug 27
Southwest Logo
11:20 am - 7:50 pm
PDX
-
STS
8h 30m
2 stops
Southwest Logo
2:55 pm - 11:15 pm
STS
-
PDX
8h 20m
2 stops
$217Southwest
Sat, Aug 22 - Thu, Aug 27
Southwest Logo
11:35 am - 9:25 pm
PDX
-
STS
9h 50m
2 stops
Southwest Logo
1:40 pm - 9:20 pm
STS
-
PDX
7h 40m
2 stops
$218Southwest
Wed, Aug 12 - Wed, Aug 19

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Southwest flights from Portland to Santa Rosa

Our best Southwest deals on Portland to Santa Rosa flight tickets
Southwest
Sep 5
PDX2:40 pmPortland
5h 10m
1 stop
STS7:50 pmSanta Rosa Sonoma County
Sep 9
STS6:00 amSanta Rosa Sonoma County
7h 20m
1 stop
PDX1:20 pmPortland
$157
Southwest
Aug 22
PDX2:40 pmPortland
5h 10m
1 stop
STS7:50 pmSanta Rosa Sonoma County
Aug 27
STS2:55 pmSanta Rosa Sonoma County
8h 10m
1 stop
PDX11:05 pmPortland
$162
Southwest
Aug 22
PDX11:20 amPortland
8h 30m
2 stops
STS7:50 pmSanta Rosa Sonoma County
Aug 27
STS2:55 pmSanta Rosa Sonoma County
8h 20m
2 stops
PDX11:15 pmPortland
$167

Alaska Airlines flights from Portland to Santa Rosa

Our best Alaska Airlines deals on Portland to Santa Rosa flight tickets
Alaska Airlines
Oct 17
PDX5:53 pmPortland
1h 54m
STS7:47 pmSanta Rosa Sonoma County
Oct 21
STS6:37 pmSanta Rosa Sonoma County
1h 43m
PDX8:20 pmPortland
$237
Alaska Airlines
Aug 22
PDX7:19 pmPortland
1h 39m
STS8:58 pmSanta Rosa Sonoma County
Aug 24
STS6:13 amSanta Rosa Sonoma County
16h 42m
1 stop
PDX10:55 pmPortland
$240
Alaska Airlines
Sep 2
PDX10:33 amPortland
13h 21m
1 stop
STS11:54 pmSanta Rosa Sonoma County
Sep 8
STS6:13 amSanta Rosa Sonoma County
7h 35m
1 stop
PDX1:48 pmPortland
$243

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 July 18, 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
Quickest round-trip

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Sat 9/5

2:40 pm-7:50 pm

1 stop5h 10m

Santa Rosa Sonoma County

Wed 9/9

6:00 am-1:20 pm

1 stop7h 20m

$157

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Sat 8/22

2:40 pm-7:50 pm

1 stop5h 10m

Santa Rosa Sonoma County

Thu 8/27

2:55 pm-11:05 pm

1 stop8h 10m

$162

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Sat 8/22

11:20 am-7:50 pm

2 stops8h 30m

Santa Rosa Sonoma County

Thu 8/27

2:55 pm-11:15 pm

2 stops8h 20m

$167

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Fri 8/21

3:40 pm-10:35 pm

1 stop6h 55m

Santa Rosa Sonoma County

Mon 8/24

2:55 pm-11:15 pm

2 stops8h 20m

$172

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 9/9

5:50 am-11:20 am

1 stop5h 30m

Santa Rosa Sonoma County

Sat 9/12

2:00 pm-9:05 pm

1 stop7h 05m

$197

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 9/9

11:35 am-9:25 pm

2 stops9h 50m

Santa Rosa Sonoma County

Sat 9/12

12:45 pm-9:20 pm

1 stop8h 35m

$202

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 9/9

11:35 am-9:25 pm

2 stops9h 50m

Santa Rosa Sonoma County

Sat 9/12

6:00 am-4:20 pm

2 stops10h 20m

$207

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Sat 8/22

6:20 am-12:05 pm

1 stop5h 45m

Santa Rosa Sonoma County

Thu 8/27

2:55 pm-11:05 pm

1 stop8h 10m

$212

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Sat 8/22

11:20 am-7:50 pm

2 stops8h 30m

Santa Rosa Sonoma County

Thu 8/27

2:55 pm-11:15 pm

2 stops8h 20m

$217

PortlandSanta Rosa

PDX - STS

PDXSTS

Portland

Wed 8/12

11:35 am-9:25 pm

2 stops9h 50m

Santa Rosa Sonoma County

Wed 8/19

1:40 pm-9:20 pm

2 stops7h 40m

$218

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 April, then departing from Portland during the month January is also very affordable. Most momondo users find prices during this month for around $217.

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

Our data shows that Saturday is the least expensive day to fly to Santa Rosa. Tickets to fly out on this day can be as low as $245. On the other hand, Monday 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 $467.

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 $278. 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 from Portland 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 $303 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 $207 on momondo.

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

There are 4 cabin classes available to choose from on Portland to Santa Rosa flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portland to Santa Rosa flights?

You could potentially save up to 7% on your flight if you consider stops on a Portland to Santa Rosa flight.

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

As of July 2026, prices for Portland to Santa Rosa flights are approximately 111% more expensive 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

$183

Fastest flight time

1h 35m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Santa Rosa

1 airport
The best one-way flight to Santa Rosa from Portland in the past 72 hours is $183. The best round-trip flight deal from Portland to Santa Rosa found on momondo in the last 72 hours is $307.
The fastest flight from Portland to Santa Rosa takes 1h 35m
Direct flights go from Portland to Santa Rosa on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Alaska Airlines.
There is 1 airport in Santa Rosa. From Portland there are direct flights to Santa Rosa Sonoma County (STS).
Search flight deals

Frequently asked questions about flying from Portland to Santa Rosa

  • 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
7.9
12,672 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Portland to Santa Rosa

    Across 20 Alaska Airlines flights from Portland to Santa Rosa this week, the average price was $309, with the best Alaska Airlines deals starting from $157 round-trip. 12,672 users have rated Alaska Airlines on momondo, with an average score of 7.9/10.

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Fort Bragg
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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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