Cheap Flight Tickets from Portland (PDX) to Seattle (SEA), Starting at $311

Good to Know: Cheapest and Fastest PDX - SEA Flights

Useful information for finding best airline tickets from Portland International to Seattle Tacoma International on your next trip.

Cheapest Round Trip Flight

$311

AS Alaska Airlines • 1 stop • 5h 24m

Oct 15 – Oct 22

The cheapest round trip flight from Portland to Seattle (PDX-SEA-PDX) is currently $311

🔍 Search Flights

Cheapest One way Flight

$432

WN Southwest Airlines • 1 stop • 20h 5m

Oct 12

The cheapest one way flight from Portland to Seattle (PDX-SEA) is currently $432

🔍 Search Flights

Cheapest Direct Flight

$377

DL Delta Airlines • nonstop • 1h 56m

Oct 15

The cheapest nonstop flight from Portland to Seattle (PDX-SEA) is currently $377

🔍 Search Flights

Fastest Flight

50m

The fastest nonstop flight from Portland to Seattle (PDX-SEA) takes 50m

Top Airlines Flying from Portland to Seattle

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

Sun Country Airlines (SY)

Sun Country Airlines

Alaska Airlines -AS

Alaska Airlines

American Airlines, AA

American Airlines

Latest Flight Deals from Portland (PDX) to Seattle (SEA)

Compare and book low fare round-trip air tickets from Portland to Seattle. Ideal for travelers with confirmed return itineraries.

Oct 15 - Oct 22, Economy
AS
Portland → Seattle
5h 24m
8:20 AM - 11:44 AM • 1 stop
AS
Portland → Seattle
57m
8:59 PM - 9:56 PM • nonstop
$311
Alaska Airlines
Oct 15 - Oct 22, Economy
F9
Portland → Seattle
36h 52m
11:06 AM - 6:45 PM • 1 stop
F9
Portland → Seattle
23h 44m
9:16 PM - 11:40 AM • 1 stop
$361
Frontier Airlines
Oct 15 - Oct 22, Economy
F9
Portland → Seattle
36h 52m
11:49 AM - 3:12 PM • 1 stop
F9
Portland → Seattle
23h 44m
9:16 PM - 11:40 AM • 1 stop
$364
Frontier Airlines
Oct 15 - Oct 22, Economy
AS
Portland → Seattle
54m
5:06 AM - 6:00 AM • nonstop
AS
Portland → Seattle
1h 47m
8:40 AM - 9:47 AM • nonstop
$407
Alaska Airlines
Oct 15 - Oct 22, Economy
WN
Portland → Seattle
16h 40m
11:00 AM - 9:00 PM • 1 stop
WN
Portland → Seattle
13h 55m
6:55 AM - 3:30 PM • 1 stop
$414
Southwest Airlines
Oct 15 - Oct 22, Economy
SY
Portland → Seattle
36h 52m
6:20 PM - 3:12 PM • 2 stops
F9
Portland → Seattle
23h 44m
4:27 PM - 11:40 AM • 3 stops
$949
Sun Country Airlines

Fly from Portland to Seattle with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Portland to Seattle? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Portland to Seattle Flights

What are the airports in Portland?
PDX
What’s the most popular airline flying from PDX to SEA?
The most popular airline flying from Portland to Seattle are
Can I fly from PDX to SEA non-stop?
Yes, you can fly PDX to SEA non-stop on
Which airlines fly nonstop between Portland and Seattle?
The non-stop flights between Portland and Seattle are .
What’s the earliest departure time from PDX to SEA Airport?
The earliest flight leaves PDX at 5:06 am and lands in SEA - Seattle Tacoma International
What are the airports in Seattle?
SEA
Can I make changes to my Portland to Seattle flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from PDX to SEA?
Read the fare rules of the Portland to Seattle air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Portland and Seattle?
operate flights between Portland and Seattle
How long does a flight from Portland to Seattle take?
It takes approximately 1 hour to fly non-stop from PDX to SEA, which is 129.23 miles by air.
Which airlines provide the cheapest flights from Portland (PDX) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from PDX were found on AS : USD 507
Do I need a passport to fly between PDX and SEA?
No
What’s the latest departure time from PDX to SEA ?
The last flight leaves PDX at 8:44 pm

Portland (PDX) to Seattle (SEA): Airport Information

Origin Airport Portland International , Portland, US
Destination Airport Seattle Tacoma International , Seattle, US
Distance 129 miles

More Flight Options for Portland (PDX) and Seattle (SEA)

Why Fareleaders for PDX to SEA Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on Portland to Seattle flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on PDX to SEA flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of Portland to Seattle flights and secure the best deals—we never add any service fees.
Get Fare Drop Alert
Be the first to know when fares drop for the Portland (PDX) to Seattle (SEA)
Terms and Conditions*