Cheap flights from Portland to Seattle

One-way fares from $91 · PDX → SEA · prices found by travellers in the last 48 hours

Compare all dates Seattle → Portland
Cheapest fare
$91

SeaPort Airlines · Tue, Nov 24

Cheapest month
November

from $91

Direct flights
Yes

SeaPort Airlines and Alaska Airlines

Flight time
0h 50m

240 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. November 2026 Cheapest $91
  2. December 2026 $96
  3. February 2027 $96

Cheapest dates in November 2026

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

SeaPort Airlines
Depart21:25 Tue, Nov 24PDX → BFI 0h 50m · Direct
$91one way, per person
View deal
SeaPort Airlines
Depart21:25 Mon, Nov 16PDX → BFI 0h 50m · Direct
$92one way, per person
View deal
SeaPort Airlines
Depart21:25 Wed, Nov 18PDX → BFI 0h 50m · Direct
$95one way, per person
View deal
SeaPort Airlines
Depart21:25 Thu, Nov 19PDX → BFI 0h 50m · Direct
$95one way, per person
View deal
SeaPort Airlines
Depart21:25 Mon, Nov 23PDX → BFI 0h 50m · Direct
$97one way, per person
View deal
Alaska Airlines
Depart14:45 Thu, Nov 26PDX → SEA 4h 02m · 1 stop
$188one way, per person
View deal
SeaPort Airlines
Depart21:25 Thu, Nov 12PDX → BFI 0h 50m · Direct
$208one way, per person
View deal
SeaPort Airlines
Depart18:45 Tue, Nov 10PDX → BFI 0h 50m · Direct
$209one way, per person
View deal
See every date in November 2026 →

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

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Things to do

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Getting around

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About flights from Portland to Seattle

Portland (PDX) and Seattle (SEA) are about 240 km apart. Direct flights take around 0h 50m, and recent direct fares were with SeaPort Airlines and Alaska Airlines. Over the next few months, one-way fares start from $91, and November 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 Seattle?

The cheapest one-way fare we've seen recently is $91 with SeaPort Airlines, departing Tuesday, November 24, 2026. Over the coming months, the lowest fare in each month ranges from $91 to $96.

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

November 2026 currently has the lowest fares, from $91 one way.

Are there direct flights from Portland to Seattle?

Yes. Recent direct fares were with SeaPort Airlines and Alaska Airlines.

How long is the flight from Portland to Seattle?

A direct flight takes about 0h 50m. Portland and Seattle are around 240 km apart.

Which airlines fly from Portland to Seattle?

Recent fares on this route were with SeaPort Airlines and Alaska Airlines.

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