฿3,785 Cheap Flights from Seattle (SEA) to Pasco (PSC)

View ฿3,785 flight on Wed, 8 Apr 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Tri-Cities Airport (PSC)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seattle (SEA) to Pasco (PSC)

Prices were available within the past 7 days and start at ฿3,785 for one-way flights and ฿6,930 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 19 Sept - Tue, 13 Oct
SEA
Seattle
PSC
Pasco
฿6,930 Return, found 5 days ago
฿6,930
Return
found 5 days ago
Select Delta flight, departing Sat, 19 Sept from Seattle to Pasco, returning Tue, 13 Oct, priced at ฿6,930 found 5 days ago
Delta
Sun, 20 Sept - Tue, 22 Sept
SEA
Seattle
PSC
Pasco
฿8,210 Return, found 5 days ago
฿8,210
Return
found 5 days ago
Select Delta flight, departing Sun, 20 Sept from Seattle to Pasco, returning Tue, 22 Sept, priced at ฿8,210 found 5 days ago
American Airlines
Sat, 19 Sept - Tue, 13 Oct
SEA
Seattle
PSC
Pasco
฿8,530 Return, found 5 days ago
฿8,530
Return
found 5 days ago
Select American Airlines flight, departing Sat, 19 Sept from Seattle to Pasco, returning Tue, 13 Oct, priced at ฿8,530 found 5 days ago
American Airlines
Sun, 20 Sept - Tue, 22 Sept
SEA
Seattle
PSC
Pasco
฿9,015 Return, found 5 days ago
฿9,015
Return
found 5 days ago
Select American Airlines flight, departing Sun, 20 Sept from Seattle to Pasco, returning Tue, 22 Sept, priced at ฿9,015 found 5 days ago
American Airlines
Sun, 20 Sept - Tue, 22 Sept
SEA
Seattle
PSC
Pasco
฿9,655 Return, found 5 days ago
฿9,655
Return
found 5 days ago
Select American Airlines flight, departing Sun, 20 Sept from Seattle to Pasco, returning Tue, 22 Sept, priced at ฿9,655 found 5 days ago
Alaska Airlines
Sun, 20 Sept - Tue, 22 Sept
SEA
Seattle
PSC
Pasco
฿9,805 Return, found 5 days ago
฿9,805
Return
found 5 days ago
Select Alaska Airlines flight, departing Sun, 20 Sept from Seattle to Pasco, returning Tue, 22 Sept, priced at ฿9,805 found 5 days ago
Alaska Airlines
Sun, 20 Sept - Tue, 22 Sept
SEA
Seattle
PSC
Pasco
฿10,445 Return, found 5 days ago
฿10,445
Return
found 5 days ago
Select Alaska Airlines flight, departing Sun, 20 Sept from Seattle to Pasco, returning Tue, 22 Sept, priced at ฿10,445 found 5 days ago
Delta
Sun, 20 Sept - Tue, 22 Sept
SEA
Seattle
PSC
Pasco
฿16,630 Return, found 5 days ago
฿16,630
Return
found 5 days ago
Select Delta flight, departing Sun, 20 Sept from Seattle to Pasco, returning Tue, 22 Sept, priced at ฿16,630 found 5 days ago
Delta
Sun, 20 Sept - Tue, 22 Sept
SEA
Seattle
PSC
Pasco
฿17,400 Return, found 5 days ago
฿17,400
Return
found 5 days ago
Select Delta flight, departing Sun, 20 Sept from Seattle to Pasco, returning Tue, 22 Sept, priced at ฿17,400 found 5 days ago
United
Sat, 19 Sept - Tue, 13 Oct
SEA
Seattle
PSC
Pasco
฿19,505 Return, found 5 days ago
฿19,505
Return
found 5 days ago
Select United flight, departing Sat, 19 Sept from Seattle to Pasco, returning Tue, 13 Oct, priced at ฿19,505 found 5 days ago

Find the cheapest month to fly from Seattle (SEA) to Pasco (PSC)

February is typically the cheapest month to fly

From ฿2,957 - ฿7,004 per traveller.

Frequently asked questions

How much is a flight from Seattle - Tacoma Intl. Airport (SEA) to PSC?
Based on airfares listed within the last 7 days on Expedia for flights departing within the next year, round-trip flights between Sea-Tac Airport and Tri-Cities Airport (PSC) start from ฿6,930. Make your booking today to secure the best price for your journey. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to PSC?
Most flights can be cancelled online, but whether or not you incur a fee depends on your airline. If you do have to cancel your getaway, follow the instructions in the Customer Service Portal.
How do I find cheap flights from SEA to PSC that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Seattle - Tacoma Intl. Airport (SEA) to PSC flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SEA to PSC?
A flight distance of just 280 kilometres separates SeaTac and Pasco. Once you're up in the air, you won't have time to do much more than listen to a few songs on your travel playlist.
Which airlines fly direct from SEA to Tri-Cities Airport (PSC)?
One airline that operates on the route from Sea-Tac Airport to Tri-Cities Airport is Alaska Airlines (AS). It offers 147 flights monthly. You could also take a look at the fares on offer with Delta Air Lines (DL). This carrier operates 91 monthly flights between SeaTac and Pasco.
Are Seattle - Tacoma Intl. Airport (SEA) to PSC flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can sometimes find a bargain, with some of the cheapest airfares from Sea-Tac Airport to PSC emerging a few weeks prior to the departure date. If you'd rather plan ahead, Expedia compares and updates all the best flight deals regularly — as early as 12 months in advance in some cases. It does depend on the carrier though, as not every airline releases prices so far in advance.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Tri-Cities
Return price
฿6,930
Distance
274 km
Average flight time
1 hour 2 mins

Book with confidence

Perfect flights from Seattle to Pasco

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Pasco. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to Tri-Cities ticket options cater to your travel preferences, with incredible one-way fares from ฿3,785 and roundtrip prices from ฿6,930. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Tri-Cities and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Pasco.
Perfect flights from Seattle to Pasco
*Available to Expedia members.