Cheap Flights from Portland to Washington D.C. from US$136

Frequently Asked Questions

• What are the cheapest flights from Portland to Washington D.C. (PDX-WAS)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$136 on Cheapest nonstop routes (e.g. PDX to DCA on Sun, Aug 16), while Frontier Airlines offers Cheapest nonstop round-trips from US$270 departing on Sat, Aug 22 and returning on Thu, Aug 27.

• Which airlines offer direct flights from Portland to Washington D.C.?

  At the moment, you can catch a nonstop flight from Portland to Washington D.C. with the following airlines, including: 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 Portland to Washington D.C.?

  It takes about 5 hours to fly from Portland to Washington D.C..

• When is the best time to book flights from Portland to Washington D.C.?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Portland to Washington D.C. 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 Portland to Washington D.C.?

  Based on Trip.com data in the past 4 weeks, there is 7 flight per week flying from Portland to Washington D.C.. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS010 (08:16)

• How can I find the best deals on flights from Portland to Washington D.C.?

  To find best deals on flights from Portland to Washington D.C., 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 Sun, Aug 16, with one-way flights priced at just US$136.
  · 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 Washington D.C. travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Portland (PDX) to Washington D.C. (WAS) the cheapest?

  The cheapest months to fly from Portland to Washington D.C. is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Portland to Washington D.C. on?

  After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Portland to Washington D.C. on July 14, 2026 with Frontier Airlines, with prices starting at US$136.

• Which airports can I fly to for Washington D.C. from Portland?

  You can land at any one of the following hubs in Washington D.C., with Portland International Airport to Ronald Reagan Washington National Airport (PDX-DCA) is by far the most common option on this route: Ronald Reagan Washington National Airport (DCA) Dulles International Airport (IAD).

• Is there any time difference between Portland and Washington D.C.?

  The time difference between Washington D.C. and Portland is 3h.

• How do I change or cancel my ticket from Portland to Washington D.C.?

  Tickets can only be changed or canceled 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.