Cheap flights from San Antonio to Washington from $120

The month of October is, on average, the cheapest month to fly to State of Washington from San Antonio, with most prices found around $275. If you aren’t able to travel to State of Washington during the month of October, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $297.

The cheapest day to depart from San Antonio to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $430. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to State of Washington for around $553.

The cheapest time of day to fly to State of Washington is in the morning when flights can be purchased for as low as $467. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $648 on average. Flights to State of Washington from San Antonio in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to State of Washington from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $331 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 Antonio for as low as $296 on momondo.

There are 4 cabin classes available to choose from on San Antonio 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.

Frontier, Delta, and Southwest are the most popular carriers operating from San Antonio to Washington

Alaska Airlines, Delta and Southwest are the top three most popular airlines that fly to State of Washington from San Antonio 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 State of Washington. Keep in mind that there are 7 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 Antonio and State of Washington is 1 per day as of August 2026. The most frequent departure time is 7:00AM, with 50% of daily flights leaving in the afternoon.

As of August 2026, 11 flights take off from San Antonio and land in State of Washington each week. The most common flight departure day for this route is Fri, with 45% of weekly flights taking off on this day.