Cheap flights from San Francisco to Seattle from R1 282

The cheapest month to fly to Seattle from San Francisco is in February. Flight prices, which tend to average around R3 424, are often lower during this time because this is during the off-season. If you aren’t able to travel to Seattle during the month of February, then flying in October is also cheap. Prices for this month can be found on momondo for an average of R4 267.

Fly from San Francisco to Seattle/Tacoma Intl for the best San Francisco - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around R4 746 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San Francisco for as low as R3 407 on momondo.

There is only 1 cabin class available to choose from on San Francisco to Seattle 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 18% of flights between San Francisco and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 134 minutes.

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

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Friday 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 16% of their flights experiencing any sort of delay.

39 flights are operational daily from San Francisco to Seattle as of September 2026. The most popular departure time for this route is 18:00, with 40% of flights per day taking off in the afternoon.

273 flights are operational weekly from San Francisco to Seattle as of September 2026. The most popular departure day for this route is Mon, with 35% of flights per week taking off on this day.