Cheap flights from San Francisco to Seattle from $115

The month of February is, on average, the cheapest month to fly to Seattle from San Francisco, with most prices found around $296. If you are unable to visit Seattle during the month of February, then departing from San Francisco during the month October is also very affordable. Most momondo users find prices during this month for around $361.

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 $410 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 $292 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.

No. A direct flight is the cheapest option for a flight between San Francisco to Seattle.

As of September 2026, prices for San Francisco to Seattle flights are approximately 8% cheaper when compared to flights at the same time last year.

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.

As of September 2026, 64 flights take off from San Francisco and land in Seattle each day. The most common flight departure time for this route is 16:00, with 47% of daily flights taking off in the afternoon.

As of September 2026, 448 flights take off from San Francisco and land in Seattle each week. The most common flight departure day for this route is Mon, with 19% of weekly flights taking off on this day.