Cheap flights from Portland to Washington

One-way fares from $211 · PDX → WAS · prices found by travellers in the last 48 hours

Compare all dates Washington → Portland
Cheapest fare
$211

Frontier Airlines · Tue, Dec 1

Cheapest month
December

from $211

Direct flights
Not recently

Usually 1+ stop

Quickest trip
5h 55m

3,780 km

Get a price alert

We'll email you when Portland → Washington drops to your price. It's free, and you can stop any time.

Today's cheapest fare is $211. We'll send one email to confirm. See our privacy policy.

Cheapest month to fly from Portland to Washington

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $218
  2. December 2026 Cheapest $211

Cheapest dates in December 2026

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart17:09 Tue, Dec 1PDX → DCA 5h 55m · 1 stop
$211one way, per person
View deal
See every date in December 2026 →

Plan the rest of your trip to Washington

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in WashingtonCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in WashingtonTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in WashingtonPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in WashingtonCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Portland to Washington

Portland (PDX) and Washington (WAS) are about 3,780 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 5h 55m. Over the next few months, one-way fares start from $211, and December 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Portland to Washington?

The cheapest one-way fare we've seen recently is $211 with Frontier Airlines, departing Tuesday, December 1, 2026. Over the coming months, the lowest fare in each month ranges from $211 to $218.

What is the cheapest month to fly from Portland to Washington?

December 2026 currently has the lowest fares, from $211 one way.

Are there direct flights from Portland to Washington?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Portland to Washington?

The quickest journey we've seen takes about 5h 55m. Portland and Washington are around 3,780 km apart.

Which airlines fly from Portland to Washington?

Recent fares on this route were with Frontier Airlines.

More cheap flights from Portland

Compare flights to Washington from other cities →