Cheap flights from Missouri to Seattle from $109

In general, February is the cheapest month to fly from Missouri to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $241. If you don’t want to visit Seattle in February, then you should wait until April to fly from Missouri, when ticket prices are also cheap, with an average price of $297.

On average, the least expensive day to fly to Seattle from Missouri is on a Saturday. momondo users have found tickets for Saturday departures for as low as $479. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Missouri because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $547.

Flying to Seattle from Missouri in the evening is the least expensive time of day to depart. momondo users have found prices as low as $470 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $554. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Kansas City to Seattle/Tacoma Intl for the best Missouri - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $372 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Missouri for as low as $321 on momondo.

There are 4 cabin classes available to choose from on Missouri to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Delta, United Airlines, and Southwest are the most popular carriers operating from Missouri to Seattle/Tacoma Intl

Alaska Airlines, American Airlines and Delta are the top three most popular airlines that fly to Seattle from Missouri according to our data. Alaska Airlines is the first choice among our users, with 66% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

As of September 2026, there are 13 flights per day flying from Missouri to Seattle. The most common time of day flights depart is 7:00AM, with 59% of flights taking off at noon.

93 flights are operational weekly from Missouri to Seattle as of September 2026. The most popular departure day for this route is Fri, with 24% of flights per week taking off on this day.