Cheap flights from Seattle to San Luis Obispo from $154

In general, January is the cheapest month to fly from Seattle to San Luis Obispo. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $217. The month of March is another great option to travel to San Luis Obispo, with average flight prices from Seattle averaging around $257.

On average, the least expensive day to fly to San Luis Obispo from Seattle is on a Saturday. momondo users have found tickets for Saturday departures for as low as $337. 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 Luis Obispo for around $427.

Flying to San Luis Obispo from Seattle at noon is the least expensive time of day to depart. momondo users have found prices as low as $337 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $417 on average. Flights to San Luis Obispo from Seattle in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Seattle/Tacoma Intl to San Luis Obispo County for the best Seattle/Tacoma Intl - San Luis Obispo County flight prices

You are more likely to see cheaper flights to San Luis Obispo from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to San Luis Obispo for around $354 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Luis Obispo from Seattle for as low as $227 on momondo.

There are 3 cabin classes available to choose from on Seattle to San Luis Obispo flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 13% on your flight if you consider stops on a Seattle to San Luis Obispo flight.

As of September 2026, prices for Seattle to San Luis Obispo flights are approximately 134% more expensive when compared to flights at the same time last year.

Alaska Airlines, American Airlines, and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to San Luis Obispo County

Alaska Airlines, United Airlines and Southwest are the top three most popular airlines that fly to San Luis Obispo from Seattle according to our data. Alaska Airlines is the first choice among our users, with 77% of people opting to fly with this airline when traveling to San Luis Obispo. Keep in mind that there are 3 different airlines that fly to San Luis Obispo on a routine basis, so you have a few additional options to choose from.

As of September 2026, 3 flights take off from Seattle and land in San Luis Obispo each day. The most common flight departure time for this route is 7:00AM, with 50% of daily flights taking off at noon.

26 flights are operational weekly from Seattle to San Luis Obispo as of September 2026. The most popular departure day for this route is Tue, with 15% of flights per week taking off on this day.