Cheap flights from San Jose, California to Seattle from $79

In general, January is the cheapest month to fly from San Jose, California to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $190. If you don’t want to visit Seattle in January, then you should wait until March to fly from San Jose, California, when ticket prices are also cheap, with an average price of $253.

On average, the least expensive day to fly to Seattle from San Jose, California is on a Thursday. momondo users have found tickets for Thursday departures for as low as $323. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from San Jose, California because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $502.

Flying to Seattle from San Jose, California in the evening is the least expensive time of day to depart. momondo users have found prices as low as $300 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $393. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Seattle from San Jose, California when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $283 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San Jose, California for as low as $200 on momondo.

There are 4 cabin classes available to choose from on San Jose, California to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Alaska Airlines, Frontier, and Southwest are the most popular carriers operating from San Jose to Seattle/Tacoma Intl

Alaska Airlines, United Airlines and Delta are the top three most popular airlines that fly to Seattle from San Jose, California according to our data. Alaska Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 7 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

As of September 2026, there are 23 flights per day flying from San Jose, California to Seattle. The most common time of day flights depart is 2:00PM, with 57% of flights taking off at noon.

163 flights are operational weekly from San Jose, California to Seattle as of September 2026. The most popular departure day for this route is Fri, with 24% of flights per week taking off on this day.