Cheap flights from Seattle to San Jose from $79

The month of October is, on average, the cheapest month to fly to San Jose, California from Seattle, with most prices found around $219. If you are unable to visit San Jose, California during the month of October, then departing from Seattle during the month March is also very affordable. Most momondo users find prices during this month for around $245.

On average, the least expensive day to fly to San Jose, California from Seattle is on a Thursday. momondo users have found tickets for Thursday departures for as low as $260. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to San Jose, California for around $405.

The cheapest time of day to fly to San Jose, California is in the evening when flights can be purchased for as low as $269. In the afternoon is when there is more demand to fly to San Jose, California, so prices are often more expensive at around $290 per ticket.

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

You are more likely to see cheaper flights to San Jose, California from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to San Jose, California for around $276 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Jose, California from Seattle for as low as $206 on momondo.

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

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

Alaska Airlines, United Airlines and Delta are the top three most popular airlines that fly to San Jose, California from Seattle according to our data. Alaska Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to San Jose, California. Keep in mind that there are 7 different airlines that fly to San Jose, California on a routine basis, so you have a few additional options to choose from.

As of September 2026, 25 flights take off from Seattle and land in San Jose, California each day. The most common flight departure time for this route is 5:00PM, with 54% of daily flights taking off in the afternoon.

177 flights are operational weekly from Seattle to San Jose, California as of September 2026. The most popular departure day for this route is Fri, with 21% of flights per week taking off on this day.