Cheap flights from Seattle to San Luis Obispo from $177

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 $212. The month of October is another great option to travel to San Luis Obispo, with average flight prices from Seattle averaging around $246.

On average, the least expensive day to fly to San Luis Obispo from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $276. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to San Luis Obispo for around $406.

Flying to San Luis Obispo from Seattle in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $291 when looking at flights departing in the afternoon. 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 $300 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 $214 on momondo.

You could potentially save up to 31% on your flight if you consider stops on a Seattle to San Luis Obispo flight.

As of April 2026, prices for Seattle to San Luis Obispo flights are approximately 23% more expensive when compared to flights at the same time last year.

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

Alaska Airlines, United Airlines and Hawaiian Airlines 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 74% of people opting to fly with this airline when traveling to San Luis Obispo. Keep in mind that there are 5 different airlines that fly to San Luis Obispo on a routine basis, so you have a few additional options to choose from.

As of April 2026, 2 flights take off from Seattle and land in San Luis Obispo each day. The most common flight departure time for this route is 7:00PM, with 58% of daily flights taking off in the evening.

17 flights are operational weekly from Seattle to San Luis Obispo as of April 2026. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.