$70 Cheap flight deals from Tri-Cities (PSC) to Seattle (SEA)

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This Weekend's Flight Deals from Tri-Cities to Seattle

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Oct 19 - Sun, Oct 26
PSC
Tri-Cities
SEA
Seattle - Tacoma Intl.
$477 Roundtrip, found 2 hours ago
$477
Roundtrip
found 2 hours ago
Select Hawaiian Airlines flight, departing Sun, Oct 19 from Tri-Cities to Seattle - Tacoma Intl., returning Sun, Oct 26, priced at $477 found 2 hours ago

Airfares from $70 One Way, $99 Round Trip from Tri-Cities to Seattle

Prices starting at $99 for return flights and $70 for one-way flights to Seattle were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jan 8 - Sun, Jan 11
PSC
Pasco
SEA
Seattle
$99 Roundtrip, found 9 hours ago
$99
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Pasco to Seattle, returning Sun, Jan 11, priced at $99 found 9 hours ago
Sun, Dec 7 - Wed, Dec 17
PSC
Pasco
SEA
Seattle
$99 Roundtrip, found 22 hours ago
$99
Roundtrip
found 22 hours ago
Select Delta flight, departing Sun, Dec 7 from Pasco to Seattle, returning Wed, Dec 17, priced at $99 found 22 hours ago
Sat, Dec 6 - Mon, Dec 8
PSC
Pasco
SEA
Seattle
$100 Roundtrip, found 22 hours ago
$100
Roundtrip
found 22 hours ago
Select Hawaiian Airlines flight, departing Sat, Dec 6 from Pasco to Seattle, returning Mon, Dec 8, priced at $100 found 22 hours ago
Fri, Dec 5 - Mon, Dec 8
PSC
Pasco
SEA
Seattle
$101 Roundtrip, found 5 hours ago
$101
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Fri, Dec 5 from Pasco to Seattle, returning Mon, Dec 8, priced at $101 found 5 hours ago
Sun, Dec 7 - Wed, Dec 24
PSC
Pasco
SEA
Seattle
$108 Roundtrip, found 22 hours ago
$108
Roundtrip
found 22 hours ago
Select Hawaiian Airlines flight, departing Sun, Dec 7 from Pasco to Seattle, returning Wed, Dec 24, priced at $108 found 22 hours ago

Seattle economy flight packages

Price found within the past 48 hours. Click for updated prices.
Kimpton Hotel Vintage Seattle by IHG
4.0-star property

Kimpton Hotel Vintage Seattle by IHG

8.8/10 Excellent! (1,002 reviews)

Nov 24 - Nov 29

5 night stay

Pasco (PSC) to Seattle (SEA)

Delta • Roundtrip • Coach
Save 100% on your flight
Price was $443, price is now $279 per person
$279
per person
found 14 hours ago
Great staff and awesome hotel! Would definitely revisit.

Reviewed on Oct 1, 2024

Comfort Inn & Suites Sea-Tac Airport
3.0-star property

Comfort Inn & Suites Sea-Tac Airport

7.6/10 Good! (1,389 reviews)

Nov 24 - Nov 29

5 night stay

Pasco (PSC) to Seattle (SEA)

Delta • Roundtrip • Coach
Save 100% on your flight
Price was $533, price is now $325 per person
$325
per person
found 14 hours ago
Definitely not enough parking for the entire hotel. We parked in some random business because we needed to park somewhere.

Reviewed on Sep 22, 2025

Hotel Max
3.5-star property

Hotel Max

8.2/10 Very Good! (1,700 reviews)

Nov 24 - Nov 29

5 night stay

Pasco (PSC) to Seattle (SEA)

Delta • Roundtrip • Coach
Save 100% on your flight
Price was $518, price is now $322 per person
$322
per person
found 14 hours ago
Nice place for downtown Seattle

Reviewed on Sep 29, 2025

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More About Flying To Seattle from Tri-Cities

Route Information for Flights from Tri-Cities to Seattle

Origin Airport IATA Code
PSC
Destination Airport IATA Code
SEA
Distance
171 mi
Direct Flight Airlines
American Airlines, Qatar Airways, KLM, JAL, Air France, Delta Air Lines, Aeromexico, Alaska Airlines, Hawaiian Airlines, Korean Air, WestJet, Virgin Atlantic, British Airways
Earliest Flight Arrival
2:10PM UTC
Latest Flight Arrival
3:46AM UTC

Tri-Cities to Seattle

If you are looking to find the best deals on Tri-Cities to Seattle flights, look no further than Orbitz. Orbitz offers guaranteed low prices as well as cutting-edge mobile tools to help you book cheap flights from Tri-Cities to Seattle.

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Orbitz keeps you updated on information that’s relevant to your flights from Tri-Cities to Seattle. We can send you and six of your personal contacts free travel alerts via SMS text, voicemail, or email, so you instantly know about flight delays or changes.

Keep More Money in Your Pocket With Discount Flights

Orbitz looks for the best deals on Tri-Cities to Seattle flights for you. Mix and match airlines for your departing and return flights to fit your travel schedule and budget.

Frequently asked questions

Are there non-stop flights from Tri-Cities to Seattle?
Yes, you'll be happy to hear that you can jet straight from Pasco, WA (PSC-Tri-Cities) to Seattle - Tacoma Intl. Airport (SEA). Nonstop flights can be booked with Alaska Airlines and Delta.
What is the shortest flight from Tri-Cities to Seattle?
Keep that movie marathon for some other time, because the journey from Tri-Cities Airport (PSC) to Seattle, WA (SEA-Seattle - Tacoma Intl.) can be as quick as 1 hour and 5 minutes.
What airlines fly from Tri-Cities to Seattle most frequently?
Alaska Airlines (AS) offers 178 flights every month between Pasco, WA (PSC-Tri-Cities) to Sea-Tac Airport. Your next big adventure is only a few clicks away. If you can't find the right flight there, take a look at the fares with Delta (DL). This airline is a fantastic alternative and offers 91 flights from Tri-Cities to Seattle every month.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.