Cheap flights from San Jose, California to Seattle from $84

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 $191. If you don’t want to visit Seattle in January, then you should wait until October to fly from San Jose, California, when ticket prices are also cheap, with an average price of $228.

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 $303. 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 $417.

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 $273 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $365. 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 $255 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 $186 on momondo.

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

Southwest and Delta are the most popular carriers operating from San Jose to Seattle/Tacoma Intl

Alaska Airlines, Delta and United Airlines 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 63% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 8 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Denver (DEN) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Denver (DEN) offer the lowest average round-trip price of $171.

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 12h 49m.

Las Vegas (LAS) has the shortest average layover time for this route: 5h 29m.

As of March 2026, there are 25 flights per day flying from San Jose, California to Seattle. The most common time of day flights depart is 8:00AM, with 63% of flights taking off at noon.

180 flights are operational weekly from San Jose, California to Seattle as of March 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.