Cheap Flights from Seattle to Portland from S$ 142

Frequently Asked Questions

• Which airlines offer the cheapest flights from Seattle (SEA) to Portland (PDX)?

  Based on Trip.com data, Alaska Airlines offers one-way fares as low as S$ 142 on Cheapest nonstop routes (e.g. SEA to PDX on Thu, Jul 9), while Delta Air Lines offers Cheapest nonstop round-trips from S$ 315 departing on Sun, Jun 28 and returning on Sun, Jul 5.

• Which airlines offer direct flights from Seattle to Portland?

  At the moment, you can catch a direct flight from Seattle to Portland with the following airlines, including: Delta Air Lines Alaska Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from Seattle (SEA) to Portland (PDX)?

  It takes about 54 minutes to fly from Seattle (SEA) to Portland (PDX).

• When is the best time to book flights from Seattle to Portland?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Portland is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Seattle to Portland?

  Based on Trip.com data in the past 4 weeks, there is 116 flight per week flying from Seattle to Portland. You can check the weekly schedule for popular airlines on this route below: Delta Air Lines: S/M/T/W/T/F/S -- DL3953 (07:56)

• How can I find the best deals on flights from Seattle to Portland?

  To find best deals on flights from Seattle to Portland, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Jul 9, with one-way flights priced at just S$ 142.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Alaska Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Portland travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Seattle to Portland to get the best price?

  The cheapest months to fly from Seattle to Portland is December, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from Seattle to Portland?

  After crunching the numbers on our June flight calendar, it's currently cheapest to fly from Seattle to Portland on June 14, 2026 with Alaska Airlines, with prices starting at S$ 173.

• Which airports can I fly through when travelling to Portland from Seattle?

  You can land at any one of the following hubs in Portland, with Seattle-Tacoma International Airport to Portland International Airport (SEA-PDX) is by far the most common option on this route: Portland International Airport (PDX) Hillsboro Airport (HIO).

• What is the time difference between Seattle and Portland?

  The time difference between Portland and Seattle is 0h.

• How can I change or cancel my flight ticket from Seattle to Portland?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.