Cheap flights from San Diego to Washington from $78

The month of January is, on average, the cheapest month to fly to State of Washington from San Diego, with most prices found around $211. If you aren’t able to travel to State of Washington during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $216.

The cheapest day to depart from San Diego to State of Washington is on a Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $310. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San Diego to State of Washington for around $563.

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $281. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $386 on average. Flights to State of Washington from San Diego in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to State of Washington from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $253 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from San Diego for as low as $213 on momondo.

There are 4 cabin classes available to choose from on San Diego to State of Washington 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 Diego to Washington

Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to State of Washington from San Diego according to our data. Alaska Airlines is the first choice among our users, with 59% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 8 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

The number of flights available between San Diego and State of Washington is 12 per day as of October 2026. The most frequent departure time is 7:00AM, with 45% of daily flights leaving in the afternoon.

89 flights are operational weekly from San Diego to State of Washington as of October 2026. The most popular departure day for this route is Fri, with 55% of flights per week taking off on this day.