$129 Cheap Alaska Airlines flights Washington (IAD) to Pasco (PSC)

View $129 flight on Sun, Aug 17, 2025Opens in a new window

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$129 Cheap Alaska Airlines flights Washington (IAD) to Pasco (PSC)

Prices were available within the past 7 days and start at $129 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Washington (IAD) to Pasco (PSC)
Origin airport
Washington Dulles Intl.
Destination airport
Tri-Cities
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Popular airline
Alaska Airlines
Distance
2151 mi

Frequently asked questions

How much is an Alaska Airlines flight from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC)?
Landing cheap one-way Alaska Airlines flights from IAD to PSC from $129 on Expedia is simple --- just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly return fares for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from IAD to PSC with Alaska Airlines?
Look for return or one-way flights to Pasco in January or February. You could find cheaper fares with Alaska Airlines during these off-peak months.
What is the cheapest time to book flights from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC) with Alaska Airlines?
For cheap Alaska Airlines fares from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact what you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Alaska Airlines fly nonstop from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC)?
Simply enter your dates, hit search and check "Nonstop" on Expedia to browse any direct flights from IAD to PSC with Alaska Airlines or another airline.
What is the earliest Alaska Airlines flight from IAD to PSC?
Find Alaska Airlines's earliest flights from IAD to PSC by selecting the "Morning" and "Early Morning" filters. Not only will you get to where you're going sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Alaska Airlines fly into in Pasco?
Catch an Alaska Airlines flight from Washington Dulles Intl. Airport (IAD) to Pasco, and you'll probably land at Tri-Cities Airport (PSC). This is the airline's main hub in this destination.
Why fly with Alaska Airlines from IAD to PSC?
Jetting off from IAD to PSC with Alaska Airlines comes with a host of perks, including an excellent in-flight experience and top-tier customer service. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to redeem on select future travel purchases. That's on top of the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Alaska Airlines flight from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC)?
Depending on your ticket type, a fee will generally apply if you modify or cancel your booking more than 24 hours after it has been confirmed. To secure flexible fares, select our "Changes included" and "No cancel fee" boxes when you look for flights. For more details on modifying or canceling your reservation, go to "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.