$139 Cheap Delta flights Raleigh (RDU) to Seattle (SEA)

You can find affordable return Delta Air Lines flights from $257 from RDU to SEA by organizing your results from “Price (lowest to highest)” on Expedia. Or search for options from $139 for a one-way trip.**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.

Delta Air Lines flights to Seattle are usually more affordable in the off-peak months of January and February. Whether you’re searching for a one-way or round-trip ticket, you could find a better deal then.

Search for affordable Delta Air Lines flights from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) one to three months before your departure date. 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 type and journey, the ideal 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.

Skip the layovers and fly from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) on any of Delta Air Lines’s 7 direct weekly flights. Use our “Nonstop” and “Airline” filters to find the Delta Air Lines flight that’ll take you to SEA at your preferred time.

From takeoff till landing, a direct Delta Air Lines flight from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA) typically takes 6h 9m.

The first Delta Air Lines flight from RDU to SEA takes off at 7:20AM UTC-5, arriving at 10:29AM UTC-8. If you prefer to jet off later, the last Delta Air Lines flight leaves RDU at 7:20AM UTC-5 and touches down at SEA at 10:29AM UTC-8. Flying before noon is often a wise choice as morning flights are least likely to experience 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.

Seattle - Tacoma Intl. Airport (SEA) is the main Seattle gateway for Delta Air Lines flights from Raleigh - Durham Intl. Airport (RDU).

Delta Air Lines makes flying from RDU to SEA more enjoyable with an excellent in-flight experience and a rewarding loyalty program. You also have the chance to earn points with Delta SkyMiles. Don’t forget to join Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Delta Air Lines typically operates Boeing 737-800 planes for flights from Raleigh - Durham Intl. Airport (RDU) to Seattle - Tacoma Intl. Airport (SEA). Keep in mind that aircraft type can vary depending on operational demands, so the plane you’ll be on might be different on your day of travel.

Changes are usually free within 24 hours of booking, but your airline may charge you after that time. For further information about modifying your flights, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to update your itinerary without being charged, apply the “No cancel fee” or “Changes included” filter when organizing your next getaway.