Cheap flights from Pasco to Seattle from $99

In general, January is the cheapest month to fly from Pasco to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $187. If you don’t want to visit Seattle in January, then you should wait until October to fly from Pasco, when ticket prices are also cheap, with an average price of $187.

On average, the least expensive day to fly to Seattle from Pasco is on a Thursday. momondo users have found tickets for Thursday departures for as low as $451. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Pasco because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $530.

Flying to Seattle from Pasco in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $414 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $526. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Pasco Tri Cities to Seattle/Tacoma Intl for the best Pasco Tri Cities - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Pasco when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $237 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Pasco for as low as $119 on momondo.

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

Delta and Alaska Airlines are the most popular carriers operating from Pasco Tri Cities to Seattle/Tacoma Intl

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Seattle from Pasco according to our data. Alaska Airlines is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

As of February 2026, there are 24 flights per day flying from Pasco to Seattle. The most common time of day flights depart is 5:00AM, with 39% of flights taking off in the afternoon.

As of February 2026, there are 168 flights per week flying from Pasco to Seattle. The most common day of the week flights depart is Fri, with 17% of flights taking off on this day.