Cheap Flights From Seattle - Tacoma Intl. (SEA) To Tri-Cities (PSC)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly

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

The cheapest flights to Tri-Cities found within the past 7 days were CA $168 round trip and CA $111 one way. Prices and availability subject to change. Additional terms may apply.

Fri, Feb 20 - Mon, Feb 23
SEA
Seattle
PSC
Pasco
CA $168 Roundtrip, found 4 days ago
CA $168
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Feb 20 from Seattle to Pasco, returning Mon, Feb 23, priced at CA $168 found 4 days ago
Fri, Feb 6 - Sun, Feb 8
SEA
Seattle
PSC
Pasco
CA $169 Roundtrip, found 4 days ago
CA $169
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Feb 6 from Seattle to Pasco, returning Sun, Feb 8, priced at CA $169 found 4 days ago
Fri, Feb 13 - Mon, Feb 16
SEA
Seattle
PSC
Pasco
CA $197 Roundtrip, found 6 days ago
CA $197
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Fri, Feb 13 from Seattle to Pasco, returning Mon, Feb 16, priced at CA $197 found 6 days ago
Thu, Feb 19 - Sun, Feb 22
SEA
Seattle
PSC
Pasco
CA $220 Roundtrip, found 13 hours ago
CA $220
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Thu, Feb 19 from Seattle to Pasco, returning Sun, Feb 22, priced at CA $220 found 13 hours ago
Fri, Feb 6 - Sun, Feb 8
SEA
Seattle
PSC
Pasco
CA $225 Roundtrip, found 4 days ago
CA $225
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Feb 6 from Seattle to Pasco, returning Sun, Feb 8, priced at CA $225 found 4 days ago
Thu, Feb 19 - Sun, Feb 22
SEA
Seattle
PSC
Pasco
CA $225 Roundtrip, found 13 hours ago
CA $225
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Thu, Feb 19 from Seattle to Pasco, returning Sun, Feb 22, priced at CA $225 found 13 hours ago
Fri, Feb 6 - Sun, Feb 8
SEA
Seattle
PSC
Pasco
CA $253 Roundtrip, found 4 days ago
CA $253
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Feb 6 from Seattle to Pasco, returning Sun, Feb 8, priced at CA $253 found 4 days ago
Fri, Feb 6 - Sun, Feb 8
SEA
Seattle
PSC
Pasco
CA $280 Roundtrip, found 4 days ago
CA $280
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Feb 6 from Seattle to Pasco, returning Sun, Feb 8, priced at CA $280 found 4 days ago
Thu, Feb 19 - Sun, Feb 22
SEA
Seattle
PSC
Pasco
CA $303 Roundtrip, found 13 hours ago
CA $303
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Thu, Feb 19 from Seattle to Pasco, returning Sun, Feb 22, priced at CA $303 found 13 hours ago
Fri, Feb 6 - Sun, Feb 8
SEA
Seattle
PSC
Pasco
CA $308 Roundtrip, found 4 days ago
CA $308
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Feb 6 from Seattle to Pasco, returning Sun, Feb 8, priced at CA $308 found 4 days ago

Frequently asked questions

Are there direct flights from Seattle - Tacoma Intl. Airport (SEA) to PSC?
Alaska Airlines and Delta are some of the airlines that operate nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport (PSC). If you're itching to get to your destination without a stopover, these are your best options.
What airlines fly from SEA to PSC?
You'll find a number of airlines that have direct flights between Seattle and Franklin County. Alaska Airlines (AS) is one of the most liked. This air carrier operates roughly 178 flights each month. You'll want to also look up the deals available through Delta (DL). Another leading carrier, it operates 91 flights monthly on the Seattle to Franklin County route. Compare the two airlines to pick up the best fare.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.