Flights to Tri-Cities from Seattle - ￥9,980

View ￥9,980 flight on Sat, Aug 16, 2025Opens in a new window

Popular airlines from Seattle to Tri-Cities

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

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Cheap Flights from Seattle to Tri-Cities (SEA-PSC)

Prices were available within the past 7 days and start at ￥9,980 for one-way flights and ￥17,060 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 16 - Sun, Aug 17
SEA
Seattle
PSC
Pasco
￥17,060 Roundtrip, found 8 hours ago
￥17,060
Roundtrip
found 8 hours ago
Select Delta flight, departing Sat, Aug 16 from Seattle to Pasco, returning Sun, Aug 17, priced at ￥17,060 found 8 hours ago
Delta
Fri, Jul 25 - Wed, Jul 30
SEA
Seattle
PSC
Pasco
￥29,050 Roundtrip, found 1 day ago
￥29,050
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Jul 25 from Seattle to Pasco, returning Wed, Jul 30, priced at ￥29,050 found 1 day ago
American Airlines
Sat, Aug 16 - Sun, Aug 17
SEA
Seattle
PSC
Pasco
￥30,080 Roundtrip, found 8 hours ago
￥30,080
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sat, Aug 16 from Seattle to Pasco, returning Sun, Aug 17, priced at ￥30,080 found 8 hours ago
Delta
Sat, Aug 16 - Sun, Aug 17
SEA
Seattle
PSC
Pasco
￥31,400 Roundtrip, found 8 hours ago
￥31,400
Roundtrip
found 8 hours ago
Select Delta flight, departing Sat, Aug 16 from Seattle to Pasco, returning Sun, Aug 17, priced at ￥31,400 found 8 hours ago
Alaska Airlines
Fri, Jul 25 - Wed, Jul 30
SEA
Seattle
PSC
Pasco
￥52,490 Roundtrip, found 1 day ago
￥52,490
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Jul 25 from Seattle to Pasco, returning Wed, Jul 30, priced at ￥52,490 found 1 day ago
United
Sat, Aug 16 - Sun, Aug 17
SEA
Seattle
PSC
Pasco
￥69,030 Roundtrip, found 8 hours ago
￥69,030
Roundtrip
found 8 hours ago
Select United flight, departing Sat, Aug 16 from Seattle to Pasco, returning Sun, Aug 17, priced at ￥69,030 found 8 hours ago

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

February is typically the cheapest month to fly

From ￥11,104 - ￥31,394 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.