Cheap flights from Missouri to Washington from $90

The month of February is, on average, the cheapest month to fly to State of Washington from Missouri, with most prices found around $266. If you aren’t able to travel to State of Washington during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $320.

The cheapest day to depart from Missouri 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 $481. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Missouri to State of Washington for around $548.

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $470. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $552 on average. Flights to State of Washington from Missouri at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Lambert-St Louis to Seattle/Tacoma Intl for the best Missouri - Washington flight prices

You are more likely to see cheaper flights to State of Washington from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $373 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 Missouri for as low as $321 on momondo.

There are 4 cabin classes available to choose from on Missouri 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.

Southwest, Alaska Airlines, and Frontier are the most popular carriers operating from Missouri to Washington

Alaska Airlines, Delta and American Airlines are the top three most popular airlines that fly to State of Washington from Missouri according to our data. Alaska Airlines is the first choice among our users, with 61% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 6 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

As of October 2026, there are 10 flights per day flying from Missouri to State of Washington. The most common time of day flights depart is 7:00AM, with 58% of flights taking off at noon.

As of October 2026, there are 75 flights per week flying from Missouri to State of Washington. The most common day of the week flights depart is Sat, with 28% of flights taking off on this day.