Cheap flights from San Francisco to Portland from $89

The cheapest month to fly to Portland from San Francisco is in September. Flight prices, which tend to average around $234, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in September, then you should wait until January to fly from San Francisco, when ticket prices are also cheap, with an average price of $241.

The cheapest day to depart on your flight to Portland is on a Saturday when prices can be found for as low as $293. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around $371.

The cheapest time of day to fly to Portland is in the morning when flights can be purchased for as low as $291. In the afternoon is when there is more demand to fly to Portland, so prices are often more expensive at around $342 per ticket.

Fly from San Francisco to Portland for the best San Francisco - Portland flight prices

You are more likely to see cheaper flights to Portland from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $269 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from San Francisco for as low as $163 on momondo.

United Airlines, Southwest, and Alaska Airlines are the most popular carriers operating from San Francisco to Portland

Alaska Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Portland from San Francisco according to our data. Alaska Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Portland. Keep in mind that there are 8 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% of flights between San Francisco and Portland have experienced a delay on any given week. The average delay length over the past 12 months has been 122 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

15 flights are operational daily from San Francisco to Portland as of April 2026. The most popular departure time for this route is 2:00PM, with 49% of flights per day taking off in the afternoon.

106 flights are operational weekly from San Francisco to Portland as of April 2026. The most popular departure day for this route is Tue, with 43% of flights per week taking off on this day.