Cheap flights from San Francisco to Portland from $110

The cheapest month to fly to Portland from San Francisco is in September. Flight prices, which tend to average around $337, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland during the month of September, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $342.

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 $380 when searching weeks before you fly. 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 $230 on momondo.

There is only 1 cabin class available to choose from on San Francisco to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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 departing at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

As of March 2026, there are 28 flights per day flying from San Francisco to Portland. The most common time of day flights depart is 22:00, with 48% of flights taking off in the afternoon.

As of March 2026, 198 flights take off from San Francisco and land in Portland each week. The most common flight departure day for this route is Thu, with 28% of weekly flights taking off on this day.