PWM - SEA

$128 Find Cheap Flights from Portland to Seattle - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$375
Typical prices: $351-$607
American Airlines
Sun 10/21Wed 10/24
PWM - SEA • 1 stop
Cheapest one-way
$128
Typical prices: $190-$355
Southwest
Sun 12/2
PWM - SEA • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Portland and Seattle. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
25 weeks
in advance
Our data shows that travelers who book at least 25 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
When to travel
September
Cheapest • 20% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top layover airports
New York John F Kennedy Intl (JFK)
Cheapest • Avg $398 (round-trip)
Detroit Metropolitan Wayne County (DTW)
Shortest trip • 8h 16m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Seattle (PWM-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Seattle

Wed, Oct 21 - Sat, Oct 24
American Airlines Logo
6:00 am - 12:18 pmPWM  Portland-SEA Seattle/Tacoma Intl
9h 18m1 stop Charlotte Douglas
American Airlines Logo
9:42 pm - 11:26 amSEA  Seattle/Tacoma Intl-PWM Portland
10h 44m1 stop Charlotte Douglas
$375American Airlines
Sat, Oct 24 - Tue, Oct 27
American Airlines Logo
5:45 pm - 12:36 amPWM  Portland-SEA Seattle/Tacoma Intl
9h 51m1 stop Chicago O'Hare Intl
American Airlines Logo
8:24 am - 9:36 pmSEA  Seattle/Tacoma Intl-PWM Portland
10h 12m1 stop Philadelphia
$375American Airlines
Wed, Nov 11 - Sat, Nov 14
Delta Logo
6:00 am - 2:30 pmPWM  Portland-SEA Seattle/Tacoma Intl
11h 30m1 stop New York John F Kennedy Intl
Delta Logo
11:45 am - 12:19 amSEA  Seattle/Tacoma Intl-PWM Portland
9h 34m1 stop New York John F Kennedy Intl
$375Delta
Wed, Dec 9 - Tue, Dec 15
Delta Logo
6:00 am - 2:35 pmPWM  Portland-SEA Seattle/Tacoma Intl
11h 35m1 stop New York John F Kennedy Intl
Delta Logo
11:55 am - 12:21 amSEA  Seattle/Tacoma Intl-PWM Portland
9h 26m1 stop New York John F Kennedy Intl
$375Delta
Tue, Nov 17 - Sat, Nov 21
United Airlines Logo
5:08 pm - 11:07 pmPWM  Portland-SEA Seattle/Tacoma Intl
8h 59m1 stop Chicago O'Hare Intl
United Airlines Logo
10:56 pm - 2:27 pmSEA  Seattle/Tacoma Intl-PWM Portland
12h 31m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl
$380United Airlines
Wed, Oct 21 - Sat, Oct 24
United Airlines Logo
5:08 pm - 10:56 pmPWM  Portland-SEA Seattle/Tacoma Intl
8h 48m1 stop Chicago O'Hare Intl
United Airlines Logo
5:00 am - 6:43 pmSEA  Seattle/Tacoma Intl-PWM Portland
10h 43m2 stops Denver Intl Chicago O'Hare Intl
$380United Airlines
Sat, Oct 24 - Mon, Oct 26
Southwest Logo
5:35 am - 4:30 pmPWM  Portland-SEA Seattle/Tacoma Intl
13h 55m2 stops Baltimore/Washington Denver Intl
Southwest Logo
12:10 am - 3:30 pmSEA  Seattle/Tacoma Intl-PWM Portland
12h 20m2 stops Chicago Midway Baltimore/Washington
$385Southwest
Sat, Oct 31 - Tue, Nov 10
Southwest Logo
7:20 am - 7:00 pmPWM  Portland-SEA Seattle/Tacoma Intl
14h 40m2 stops Baltimore/Washington Phoenix Sky Harbor Intl
Southwest Logo
6:30 pm - 9:50 amSEA  Seattle/Tacoma Intl-PWM Portland
12h 20m2 stops San Diego Baltimore/Washington
$385Southwest
Wed, Nov 11 - Tue, Nov 17
Alaska Airlines Logo
12:50 pm - 9:29 pmPWM  Portland-SEA Seattle/Tacoma Intl
11h 39m1 stop Chicago O'Hare Intl
Alaska Airlines Logo
8:32 am - 10:57 pmSEA  Seattle/Tacoma Intl-PWM Portland
11h 25m1 stop Philadelphia
$613Alaska Airlines
Wed, Nov 11 - Tue, Nov 17
Alaska Airlines Logo
11:07 am - 8:59 pmPWM  Portland-SEA Seattle/Tacoma Intl
12h 52m1 stop Philadelphia
Alaska Airlines Logo
6:00 am - 10:29 pmSEA  Seattle/Tacoma Intl-PWM Portland
13h 29m2 stops Los Angeles Washington, D.C. Reagan-National
$618Alaska Airlines
Booking Insights

Price, demand and travel trends for Portland to Seattle flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Portland to Seattle with more confidence.

How much is a round-trip flight from Portland to Seattle?

Round-trip flights from Portland to Seattle start at $375. Prices are typical for this route right now, with typical round-trip fares ranging from $351 to $607. The lowest price found in the past 5 days was $375 on American Airlines.

What's the cheapest day of the week to fly from Portland to Seattle?

Wednesday is the cheapest day of the week to fly from Portland to Seattle, it is 22% cheaper than the average day. Sunday is the most expensive day with flight prices 41% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • September is the cheapest month to fly from Portland to Seattle at $364 round-trip.
  • June ($681) and August ($628) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 87% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Portland to Seattle the cheapest?

Flights from Portland to Seattle are cheapest 25 weeks before departure. Booking in this window typically costs about 34% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Portland to Seattle flights

Low season

February

Cheapest flight

$128
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 37% increase in price.
Flight from Portland to Seattle

When to book flights from Portland to Seattle

Are your dates flexible? Find out the best times to travel from Portland to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Portland to Seattle flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Portland to Seattle?

    Flights from Portland to Seattle usually depart from Portland (PWM) and arrive at Seattle/Tacoma Intl (SEA).

  • What cabin classes can I book on flights from Portland to Seattle?

    Two cabin classes are available on flights from Portland to Seattle:

    • Economy Class
    • First Class

  • Which airports do connecting flights from Portland to Seattle pass through?

    One-stop flights from Portland to Seattle most commonly connect through:

    • Chicago O'Hare Intl (ORD) - 22% of one-stop connections
    • Philadelphia (PHL) - 21% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 13% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) - 12% of one-stop connections

    Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Portland to Seattle?

    Yes. Being flexible with your travel dates can save you up to 45% on the Portland to Seattle route. Wednesday is the cheapest departure day at $361 round-trip on average, while Sunday is the most expensive at $647, a difference of $286. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pike Place Market, Pier 66 and Lumen Field. These are among the most viewed places in Seattle on KAYAK.

  • How expensive are last-minute Portland to Seattle flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 0% above the route average of $457. Book 25 weeks before departure for the lowest fares.

  • How long is a flight from Portland to Seattle?

    A nonstop flight from Portland to Seattle takes 0h 00m, covering 2,481 miles.

  • Do I need a passport to fly from Portland to Seattle?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Portland to Seattle changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $293 to $1,505. That means the highest observed fare was about 5x higher than the lowest one.

  • How are flight prices from Portland to Seattle looking right now?

    One-way fares from Portland to Seattle are currently lower than usual. Average one-way flight prices are about $216, which is 13% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Portland to Seattle?

    Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 8h 16m, compared with 8h 16m via Denver Intl (DEN) and 8h 22m via Washington, D.C. Dulles Intl (IAD).

  • What is the time difference between Portland and Seattle?

    Seattle is 3 hours behind Portland (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:
    • Fox
    • Europcar
    • Thrifty
    • Budget
    • Dollar

  • How much should I expect to pay for a Portland to Seattle flight?

    Round-trip flights from Portland to Seattle range from $351 to $607, with an average of $457 over the past 12 months. Anything below $351 counts as a good deal.

Your guide to booking Portland to Seattle flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average $361 - about $286 less than Sunday (44% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 25 weeks before you fly. On this route, that window historically saves about 34% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Portland to Seattle trip for September. Fares historically average $364 round-trip in that month - typically $317 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.
    - Seattle Airport Marriott
    - Coast Gateway Hotel
    - Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

More options for your flight from Portland to Seattle

Complete your trip to Seattle with a hotel stay or car rental

Car rentals in Seattle
Hotels in Seattle
Vacations in Seattle