Cheap flights from Portland to Seattle

One-way fares from $274 · PWM → SEA · prices found by travellers in the last 48 hours

Compare all dates Seattle → Portland
Cheapest fare
$274

American Airlines · Mon, Sep 13

Cheapest month
September

from $274

Direct flights
Not recently

Usually 1+ stop

Quickest trip
8h 08m

3,990 km

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Cheapest month to fly from Portland to Seattle

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

  1. September 2027 Cheapest $274

Cheapest dates in September 2027

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

American Airlines
Depart16:05 Mon, Sep 13PWM → SEA 8h 16m · 1 stop
$274one way, per person
View deal
See every date in September 2027 →

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Getting around

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About flights from Portland to Seattle

Portland (PWM) and Seattle (SEA) are about 3,990 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 8h 08m. Over the next few months, one-way fares start from $274, and September 2027 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 Seattle?

The cheapest one-way fare we've seen recently is $274 with American Airlines, departing Monday, September 13, 2027.

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

September 2027 currently has the lowest fares, from $274 one way.

Are there direct flights from Portland to Seattle?

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

How long is the flight from Portland to Seattle?

The quickest journey we've seen takes about 8h 08m. Portland and Seattle are around 3,990 km apart.

Which airlines fly from Portland to Seattle?

Recent fares on this route were with American Airlines.

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