Cheap Alaska Airlines flights Portland (PDX) to Washington (IAD)

You’ll find budget-friendly return Alaska Airlines flights from PDX to IAD by sorting your results from “Price (lowest to highest)” on Expedia. Or search for deals for a one-way journey.**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.

Alaska Airlines flights to Washington are generally more affordable in the low-season months of January and February. Whether you’re searching for a return or one-way ticket, you could find a better deal then.

Look for cheap Alaska Airlines flights from Portland Intl. Airport (PDX) to Washington Dulles Intl. Airport (IAD) one to three months ahead of your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and journey, the ideal day to book a domestic flight is usually Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

Click on the “Nonstop” filter when searching for direct Alaska Airlines flights from PDX to IAD. You’ll also be able to compare other airlines servicing the same nonstop route.

Search Alaska Airlines’s earliest flights from PDX to IAD by checking the “Morning” and “Early Morning” filters. Not only will you arrive at your destination 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.

Alaska Airlines flights from Portland Intl. Airport (PDX) to Washington touch down at Washington Dulles Intl. Airport (IAD). This is the main entry point here.

Alaska Airlines makes traveling from PDX to IAD more comfortable with top-tier customer service and a rewarding loyalty program. You also have the chance to earn points with Mileage Plan. Remember to sign up to Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee is typically charged if you change or cancel your flight more than 24 hours after it’s confirmed. To find flexible plane tickets, select our “Changes included” or “No cancel fee” filter when searching for flights. For more details on canceling or changing your reservation, head to “Trips,” select your flight and tick “Manage Booking.”