$70 Cheap Flights from Seattle (SEA) to Pasco (PSC)

View $70 flight on Sat, Dec 13, 2025Opens in a new window

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

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Cheap Flights from Seattle to Pasco (SEA-PSC)

Prices were available within the past 7 days and start at $70 for one-way flights and $99 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Dec 13 - Sun, Dec 14
SEA
Seattle
PSC
Pasco
$99 Roundtrip, found 1 hour ago
$99
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Dec 13 from Seattle to Pasco, returning Sun, Dec 14, priced at $99 found 1 hour ago
Delta
Sat, Dec 13 - Sun, Dec 14
SEA
Seattle
PSC
Pasco
$99 Roundtrip, found 1 hour ago
$99
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Dec 13 from Seattle to Pasco, returning Sun, Dec 14, priced at $99 found 1 hour ago
Hawaiian Airlines
Wed, Dec 10 - Tue, Dec 23
SEA
Seattle
PSC
Pasco
$108 Roundtrip, found 1 hour ago
$108
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Wed, Dec 10 from Seattle to Pasco, returning Tue, Dec 23, priced at $108 found 1 hour ago
Alaska Airlines
Wed, Oct 29 - Sat, Nov 1
SEA
Seattle
PSC
Pasco
$117 Roundtrip, found 4 hours ago
$117
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Wed, Oct 29 from Seattle to Pasco, returning Sat, Nov 1, priced at $117 found 4 hours ago
Alaska Airlines
Sat, Dec 13 - Sun, Dec 14
SEA
Seattle
PSC
Pasco
$118 Roundtrip, found 1 hour ago
$118
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Dec 13 from Seattle to Pasco, returning Sun, Dec 14, priced at $118 found 1 hour ago
Hawaiian Airlines
Sun, Dec 14 - Tue, Dec 23
SEA
Seattle
PSC
Pasco
$127 Roundtrip, found 1 hour ago
$127
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Sun, Dec 14 from Seattle to Pasco, returning Tue, Dec 23, priced at $127 found 1 hour ago
Alaska Airlines
Sat, Dec 13 - Sun, Dec 14
SEA
Seattle
PSC
Pasco
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Dec 13 from Seattle to Pasco, returning Sun, Dec 14, priced at $137 found 1 hour ago
Hawaiian Airlines
Mon, Dec 15 - Tue, Dec 16
SEA
Seattle
PSC
Pasco
$139 Roundtrip, found 1 hour ago
$139
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Mon, Dec 15 from Seattle to Pasco, returning Tue, Dec 16, priced at $139 found 1 hour ago
American Airlines
Wed, Oct 29 - Sat, Nov 1
SEA
Seattle
PSC
Pasco
$177 Roundtrip, found 4 hours ago
$177
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Oct 29 from Seattle to Pasco, returning Sat, Nov 1, priced at $177 found 4 hours ago
United
Sat, Nov 1 - Wed, Nov 5
SEA
Seattle
PSC
Pasco
$455 Roundtrip, found 7 hours ago
$455
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Nov 1 from Seattle to Pasco, returning Wed, Nov 5, priced at $455 found 7 hours ago

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

February is typically the cheapest month to fly

From $77 - $234 per traveler.

Alternative airports near Pasco

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Tri-Cities PSC. Cheapest and Closest option available. Average driving time to city center is 4 minutes. Flights from $238
PSC
Tri-Cities
CheapestClosest
Average driving time to city center4 min
Flights from $238
Flights from Seattle (SEA) to Pasco (PSC)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Tri-Cities
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$99
Distance
171 mi
Average flight time
1 hour 7 mins

Seattle to Pasco Flights

The cheapest times to fly from Seattle to Pasco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Pasco are during the month of December. You can find some of the cheapest flights from Seattle to Pasco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Pasco

Sunday is one of the best days to book for cheap flights from Seattle to Pasco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Pasco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Pasco in 2025. You can also book with separate airlines for your outbound and return journeys, from $70 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Pasco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Pasco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC) cost?
Snag a cheap one-way flight from $70 or cheap return flight from $99 from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC)?
December is the least expensive month to fly from SEA to PSC. Avoiding peak travel times is often the key to finding a great deal.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC)?
Board a direct flight with Alaska Airlines and go straight from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC).
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC)?
While prices can change depending on your travel dates, Delta Air Lines and Alaska Airlines are often among the top picks for flights between Seattle - Tacoma Intl. Airport (SEA) and Tri-Cities Airport (PSC). You can also compare carriers on Expedia and use the "Sort by" filter to find the best deal for your SEA to PSC flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC)?
With an average of 6 nonstop flights that operate from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC) daily, you'll be taking off on vacation soon enough.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC)?
Flights between SEA and PSC are busiest at 10 PM. If you'd like a less crowded experience and potentially cheaper fares, look for a time outside the usual busy windows.
What day of the week has the most flights from SEA to PSC?
Friday has the most flights from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC). Consider taking off on this day and you'll have a greater chance of finding a departure that fits your plans.
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC)?
The first flight of the day leaving from Seattle - Tacoma Intl. Airport (SEA) is at around 9:50AM UTC-8. Board this plane and you'll reach Tri-Cities Airport (PSC) at approximately 11:03AM UTC-8. The total time in the air is 1h 13m.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC)?
The average flight time from SEA to PSC is 1 hour and 1 minute, covering a distance of 170 mi.
What airline has the least delays from SEA to PSC?
With 100% of flights usually landing on time, Aeromexico has the best on-time performance for direct flights from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC). To monitor your flight status and get notified if anything changes, use the Expedia App.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC)?
Book a flight from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Pasco from Seattle - Tacoma Intl. Airport (SEA)?
You can land at Tri-Cities Airport (PSC) or Walla Walla Regional Airport (ALW) when you travel to Pasco on a direct flight from Seattle - Tacoma Intl. Airport (SEA).
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC) last-minute?
Holding off until just before your trip to book a flight from SEA to PSC often results in higher prices. While you may find some last-minute deals, they aren't always guaranteed. Be flexible with your itinerary for the best chance of landing a bargain.
Is it cheaper to book a SEA to PSC flight and hotel package?
Compared with arranging flights and hotels separately, booking a SEA to PSC flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the stress out of travel planning. Just pick your flights and select from our extensive range of stays, then personalize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC)?
It's generally possible to reschedule or cancel your SEA to PSC flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.