Cheap flights from San Francisco to Portland from $124

The cheapest month to fly to Portland from San Francisco is in September. Flight prices, which tend to average around $327, 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 October is also cheap. Prices for this month can be found on momondo for an average of $338.

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 $216 on momondo.

Historically, on average around 14% 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 12% of their flights experiencing any sort of delay.

As of May 2026, there are 39 flights per day flying from San Francisco to Portland. The most common time of day flights depart is 14:00, with 53% of flights taking off in the afternoon.

As of May 2026, 277 flights take off from San Francisco and land in Portland each week. The most common flight departure day for this route is Thu, with 18% of weekly flights taking off on this day.