$69 Cheap Delta flights Portland (PDX) to Seattle (SEA)

Finding cheap one-way Delta Air Lines flights from PDX to SEA from $69 on Expedia is easy — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $137 for your next exciting vacation.**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 tend to be cheaper in the off-peak months of January and February. Whether you’re in search of a one-way or round-trip ticket, you could land a better deal then.

Look for affordable Delta Air Lines flights from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA) one to three months prior to your 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 type and itinerary, the best day to book a domestic flight is generally 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.

Skip the layovers and fly from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA) on one of Delta Air Lines’s 48 direct weekly flights. Apply 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 Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA) typically takes 1h 11m.

Delta Air Lines has the most flights from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA) on Tuesday. With up to 7 daily departures, you’ll get the most flexibility on this day.

The first flight from PDX to SEA with Delta Air Lines leaves at 5:15AM UTC-8. You’ll land at 6:27AM UTC-8. The final Delta Air Lines flight of the day leaves at 7:35PM UTC-8 and arrives at 8:46PM UTC-8. With around 20% fewer cancellations for early and mid-morning departures, starting your travel day early is usually the best way to go.**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 Portland Intl. Airport (PDX).

Traveling from PDX to SEA with Delta Air Lines comes with plenty of perks, including a rewarding loyalty program and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to spend on select future travel purchases. That’s in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA) route, Delta Air Lines typically flies Embraer 175 and Boeing 737-800 planes. Keep in mind that last-minute changes are possible for operational purposes, meaning your flight may be on another aircraft.

You can usually reschedule or cancel your flight, although there may be additional charges if you made your booking over 24 hours ago. Need flexible options? Make use of our “No cancel fee” and “Changes included” filters to find flights that won’t charge extra if you have to adjust your plans. To update your itinerary, head to “Trips,” select your flight and click on “Manage Booking” for more information.