Cheap flights from Portland to San Francisco from $76

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.

Our data shows that Tuesday is the least expensive day to fly to Santa Rosa. Tickets to fly out on this day can be as low as $297. 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 $482.

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 $304. Flights at noon are often more expensive with an average ticket price of $397.

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

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 $310 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.

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.

No. A direct flight is the cheapest option for a flight between Portland to Santa Rosa.

As of September 2026, prices for Portland to Santa Rosa flights are approximately 0% more expensive when compared to flights at the same time last year.

Southwest is the most popular carrier operating from Portland to Santa Rosa Sonoma County

Alaska Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Santa Rosa from Portland according to our data. Alaska Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Santa Rosa. Keep in mind that there are 7 different airlines that fly to Santa Rosa on a routine basis, so you have a few additional options to choose from.

2 flights are operational daily from Portland to Santa Rosa as of September 2026. The most popular departure time for this route is 7:00AM, with 33% of flights per day taking off at noon.

The number of flights available between Portland and Santa Rosa is 19 per week as of September 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.