Cheap Alaska Airlines flights Raleigh (RDU) to Seattle (SEA)

Scoring cheap one-way Alaska Airlines flights from RDU to SEA on Expedia is easy — just filter by “Price (lowest to highest).” Alternatively, check out our affordable 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.

January is one of the most affordable months to travel to Seattle with Alaska Airlines. You could also find great deals on one-way and round-trip tickets in February.

Look for cheap Alaska Airlines flights from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) one to three months before 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 itinerary, the best day to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book 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.

Alaska Airlines offers direct flights from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA), with 5 departures every week. Simply select the “Nonstop” and “Airline” filters during your search on Expedia to show all direct Alaska Airlines flights to SEA.

Depart Raleigh - Durham Intl. Airport (RDU) for Seattle - Tacoma Intl. Airport (SEA) on a nonstop Alaska Airlines flight, and you’ll be in the skies for about 6h 10m.

Departing RDU at 5:25PM UTC-5, the first Alaska Airlines flight to SEA lands at 8:35PM UTC-8. Traveling earlier in the day means you’re less likely to encounter delays.* After something later? The last Alaska Airlines flight from RDU to SEA departs at 5:25PM UTC-5 and touches down at 8:35PM UTC-8.*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 Raleigh - Durham Intl. Airport (RDU) to Seattle touch down at Seattle - Tacoma Intl. Airport (SEA). This is the main gateway here.

Flying from RDU to SEA with Alaska Airlines comes with a variety of perks, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to spend 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.

You’ll likely be seated on a Boeing 737 MAX 9 or a Boeing 737-900 when flying Alaska Airlines from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA). However, keep in mind that a different plane may be assigned depending on operational demands.

It’s generally possible to cancel or reschedule your flight, although there may be additional charges if you made your booking more than 24 hours ago. Prefer to keep your options open? Use Expedia’s “Changes included” or “No cancel fee” filter to find flights that won’t charge extra if you have to adjust your plans. To update your booking, visit “Trips,” select your flight and click on “Manage Booking” for further information.