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Portland International Airport to Seattle-Tacoma International Airport flight
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Portland International Airport to Seattle-Tacoma International Airport Flights Info

Cheapest one-way
US$108
Alaska Airlines Alaska Airlines 7h 55m · 1 stop Wed, Dec 23
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Cheapest return
US$112
Delta Air Lines Delta Air Lines 1h 15m · Direct Fri, Nov 27 - Wed, Dec 2
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Best time to book
January
Cheapest
Recommended airlines
Alaska Airlines Alaska AirlinesCheapest· From US$108 Alaska Airlines Alaska AirlinesMost booked

Explore the cheapest one-way and round-trip flights from Portland International Airport to Seattle-Tacoma International Airport over the next 90 days, with one-way fares from US$108 and round-trip from US$112. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      PDX 19:35
      1h 15m
      Direct
      SEA 20:50
      Portland - Seattle | Fri, Nov 27 | Delta Air Lines
      SEA 07:20
      1h 16m
      Direct
      PDX 08:36
      Seattle - Portland | Wed, Dec 2 | Delta Air Lines
      US$112 US$291
      62% off
      62% off
      US$291 US$112
    • PDX 05:00
      1h 2m
      Direct
      SEA 06:02
      Portland - Seattle | Sun, Dec 13 | Alaska Airlines
      SEA 23:10
      1h
      Direct
      PDX 00:10
      Seattle - Portland | Thu, Dec 17 | Alaska Airlines
      US$114 US$291
      61% off
      61% off
      US$291 US$114
    • PDX 17:59
      1h 13m
      Direct
      SEA 19:12
      Portland - Seattle | Mon, Dec 14 | Delta Air Lines
      SEA 07:20
      1h 13m
      Direct
      PDX 08:33
      Seattle - Portland | Thu, Dec 17 | Delta Air Lines
      US$164 US$291
      44% off
      44% off
      US$291 US$164
    • PDX 05:30
      1h 15m
      Direct
      SEA 06:45
      Portland - Seattle | Tue, Nov 17 | Delta Air Lines
      SEA 09:40
      1h 12m
      Direct
      PDX 10:52
      Seattle - Portland | Tue, Nov 24 | Delta Air Lines
      US$165
      43% off
      US$291 US$165
    • PDX 17:51
      1h 14m
      Direct
      SEA 19:05
      Portland - Seattle | Fri, Nov 20 | Delta Air Lines
      SEA 07:20
      1h 16m
      Direct
      PDX 08:36
      Seattle - Portland | Fri, Nov 27 | Delta Air Lines
      US$167
      43% off
      US$291 US$167
    • PDX 19:35
      1h 15m
      Direct
      SEA 20:50
      Portland - Seattle | Sun, Nov 22 | Delta Air Lines
      SEA 09:40
      1h 12m
      Direct
      PDX 10:52
      Seattle - Portland | Tue, Nov 24 | Delta Air Lines
      US$169
      42% off
      US$291 US$169
    • PDX 17:51
      1h 14m
      Direct
      SEA 19:05
      Portland - Seattle | Tue, Dec 1 | Delta Air Lines
      SEA 20:58
      59m
      Direct
      PDX 21:57
      Seattle - Portland | Tue, Dec 8 | Delta Air Lines
      US$185
      36% off
      US$291 US$185
    • PDX 21:30
      1h 13m
      Direct
      SEA 22:43
      Portland - Seattle | Fri, Dec 25 | Alaska Airlines
      SEA 07:26
      1h 3m
      Direct
      PDX 08:29
      Seattle - Portland | Fri, Jan 1 | Alaska Airlines
      US$203
      30% off
      US$291 US$203
    • PDX 16:03
      59m
      Direct
      SEA 17:02
      Portland - Seattle | Fri, Dec 18 | Alaska Airlines
      SEA 20:57
      55m
      Direct
      PDX 21:52
      Seattle - Portland | Fri, Dec 25 | Alaska Airlines
      US$204
      30% off
      US$291 US$204
    • PDX 13:00
      17h 25m
      1 stop
      SEA 14:00
      Portland - Seattle | Wed, Nov 18 | Normal Airline
      SEA 15:00
      6h
      Direct
      PDX 16:00
      Seattle - Portland | Fri, Nov 20 | Normal Airline
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    • Cheapest
      PDX 07:00
      7h 55m
      1 stop
      SEA 14:55
      Portland - Seattle | Wed, Dec 23 | Alaska Airlines
      US$108 US$184
      41% off
      41% off
      US$184 US$108
    • PDX 07:00
      5h 59m
      1 stop
      SEA 12:59
      Portland - Seattle | Thu, Dec 24 | Alaska Airlines
      US$111 US$184
      40% off
      40% off
      US$184 US$111
    • PDX 10:56
      7h 17m
      1 stop
      SEA 18:13
      Portland - Seattle | Mon, Dec 21 | Alaska Airlines
      US$112 US$184
      39% off
      39% off
      US$184 US$112
    • PDX 14:30
      6h 26m
      1 stop
      SEA 20:56
      Portland - Seattle | Thu, Jan 14 | Alaska Airlines
      US$122
      34% off
      US$184 US$122
    • PDX 14:30
      6h 26m
      1 stop
      SEA 20:56
      Portland - Seattle | Fri, Jan 15 | Alaska Airlines
      US$122
      34% off
      US$184 US$122
    • PDX 07:34
      7h 29m
      1 stop
      SEA 15:03
      Portland - Seattle | Thu, Nov 19 | Alaska Airlines
      US$124
      33% off
      US$184 US$124
    • PDX 07:34
      7h 29m
      1 stop
      SEA 15:03
      Portland - Seattle | Mon, Nov 23 | Alaska Airlines
      US$124
      33% off
      US$184 US$124
    • PDX 07:00
      5h 59m
      1 stop
      SEA 12:59
      Portland - Seattle | Thu, Dec 17 | Alaska Airlines
      US$124
      33% off
      US$184 US$124
    • PDX 07:00
      5h 59m
      1 stop
      SEA 12:59
      Portland - Seattle | Fri, Dec 18 | Alaska Airlines
      US$124
      33% off
      US$184 US$124
    • PDX 13:00
      17h 25m
      1 stop
      SEA 14:00
      Portland - Seattle | Wed, Nov 18 | Normal Airline
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    • Cheapest nonstop
      PDX 13:49
      59m
      Direct
      SEA 14:48
      Portland - Seattle | Fri, Dec 4 | Alaska Airlines
      US$130 US$184
      28% off
      28% off
      US$184 US$130
    • PDX 09:16
      1h 29m
      Direct
      SEA 10:45
      Portland - Seattle | Fri, Dec 4 | Delta Air Lines
      US$132 US$184
      28% off
      28% off
      US$184 US$132
    • PDX 06:25
      1h 3m
      Direct
      SEA 07:28
      Portland - Seattle | Wed, Jan 6 | Alaska Airlines
      US$135 US$412
      67% off
      67% off
      US$412 US$135
    • PDX 16:03
      59m
      Direct
      SEA 17:02
      Portland - Seattle | Sat, Dec 5 | Alaska Airlines
      US$136
      67% off
      US$412 US$136
    • PDX 21:45
      1h 12m
      Direct
      SEA 22:57
      Portland - Seattle | Wed, Dec 30 | Alaska Airlines
      US$136
      67% off
      US$412 US$136
    • PDX 16:03
      59m
      Direct
      SEA 17:02
      Portland - Seattle | Wed, Dec 9 | Alaska Airlines
      US$136
      67% off
      US$412 US$136
    • PDX 17:32
      1h 2m
      Direct
      SEA 18:34
      Portland - Seattle | Tue, Dec 8 | Alaska Airlines
      US$136
      67% off
      US$412 US$136
    • PDX 08:21
      1h 3m
      Direct
      SEA 09:24
      Portland - Seattle | Tue, Dec 29 | Alaska Airlines
      US$137
      67% off
      US$412 US$137
    • PDX 14:52
      1h 2m
      Direct
      SEA 15:54
      Portland - Seattle | Sat, Dec 19 | Alaska Airlines
      US$144
      65% off
      US$412 US$144
    • PDX 13:00
      17h 25m
      1 stop
      SEA 14:00
      Portland - Seattle | Wed, Nov 18 | Normal Airline
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    • Cheapest nonstop
      PDX 06:25
      1h 3m
      Direct
      SEA 07:28
      Portland - Seattle | Wed, Jan 6 | Alaska Airlines
      US$135 US$412
      67% off
      67% off
      US$412 US$135
    • PDX 16:03
      59m
      Direct
      SEA 17:02
      Portland - Seattle | Sat, Dec 5 | Alaska Airlines
      US$136 US$412
      67% off
      67% off
      US$412 US$136
    • PDX 21:45
      1h 12m
      Direct
      SEA 22:57
      Portland - Seattle | Wed, Dec 30 | Alaska Airlines
      US$136 US$412
      67% off
      67% off
      US$412 US$136
    • PDX 16:03
      59m
      Direct
      SEA 17:02
      Portland - Seattle | Wed, Dec 9 | Alaska Airlines
      US$136
      67% off
      US$412 US$136
    • PDX 17:32
      1h 2m
      Direct
      SEA 18:34
      Portland - Seattle | Tue, Dec 8 | Alaska Airlines
      US$136
      67% off
      US$412 US$136
    • PDX 08:21
      1h 3m
      Direct
      SEA 09:24
      Portland - Seattle | Tue, Dec 29 | Alaska Airlines
      US$137
      67% off
      US$412 US$137
    • PDX 14:52
      1h 2m
      Direct
      SEA 15:54
      Portland - Seattle | Sat, Dec 19 | Alaska Airlines
      US$144
      65% off
      US$412 US$144
    • PDX 12:00
      57m
      Direct
      SEA 12:57
      Portland - Seattle | Tue, Jan 5 | Alaska Airlines
      US$147
      64% off
      US$412 US$147
    • PDX 17:32
      1h 2m
      Direct
      SEA 18:34
      Portland - Seattle | Tue, Dec 15 | Alaska Airlines
      US$149
      64% off
      US$412 US$149
    • PDX 13:00
      17h 25m
      1 stop
      SEA 14:00
      Portland - Seattle | Wed, Nov 18 | Normal Airline
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    • Cheapest nonstop
      PDX 07:08
      1h 7m
      Direct
      SEA 08:15
      Portland - Seattle | Tue, Nov 17 | Alaska Airlines
      US$427 US$594
      28% off
      28% off
      US$594 US$427
    • PDX 14:15
      1h 10m
      Direct
      SEA 15:25
      Portland - Seattle | Tue, Nov 17 | Delta Air Lines
      US$354 US$594
      40% off
      40% off
      US$594 US$354
    • PDX 07:00
      1h 18m
      Direct
      SEA 08:18
      Portland - Seattle | Wed, Nov 18 | Delta Air Lines
      US$314 US$594
      47% off
      47% off
      US$594 US$314
    • PDX 07:08
      1h 7m
      Direct
      SEA 08:15
      Portland - Seattle | Wed, Nov 18 | Alaska Airlines
      US$315
      47% off
      US$594 US$315
    • PDX 08:08
      1h
      Direct
      SEA 09:08
      Portland - Seattle | Thu, Nov 19 | Alaska Airlines
      US$308
      48% off
      US$594 US$308
    • PDX 14:15
      1h 10m
      Direct
      SEA 15:25
      Portland - Seattle | Fri, Nov 20 | Delta Air Lines
      US$313
      47% off
      US$594 US$313
    • PDX 14:49
      1h
      Direct
      SEA 15:49
      Portland - Seattle | Fri, Nov 20 | Alaska Airlines
      US$308
      48% off
      US$594 US$308
    • PDX 17:45
      1h
      Direct
      SEA 18:45
      Portland - Seattle | Sat, Nov 21 | Alaska Airlines
      US$192
      68% off
      US$594 US$192
    • PDX 13:00
      17h 25m
      1 stop
      SEA 14:00
      Portland - Seattle | Wed, Nov 18 | Normal Airline
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    • PDX 11:57
      55m
      Direct
      SEA 12:52
      Portland - Seattle | Sat, Dec 12 | Alaska Airlines
      US$181 US$341
      47% off
      47% off
      US$341 US$181
    • PDX 12:00
      57m
      Direct
      SEA 12:57
      Portland - Seattle | Tue, Jan 5 | Alaska Airlines
      US$147 US$412
      64% off
      64% off
      US$412 US$147
    • PDX 19:36
      58m
      Direct
      SEA 20:34
      Portland - Seattle | Fri, Nov 27 | Alaska Airlines
      US$238 US$341
      30% off
      30% off
      US$341 US$238
    • PDX 13:49
      59m
      Direct
      SEA 14:48
      Portland - Seattle | Fri, Dec 4 | Alaska Airlines
      US$130
      28% off
      US$184 US$130
    • PDX 16:03
      59m
      Direct
      SEA 17:02
      Portland - Seattle | Sat, Dec 5 | Alaska Airlines
      US$136
      67% off
      US$412 US$136
    • PDX 16:03
      59m
      Direct
      SEA 17:02
      Portland - Seattle | Wed, Dec 9 | Alaska Airlines
      US$136
      67% off
      US$412 US$136
    • PDX 16:03
      59m
      Direct
      SEA 17:02
      Portland - Seattle | Sat, Dec 12 | Alaska Airlines
      US$296
      28% off
      US$412 US$296
    • PDX 06:05
      1h
      Direct
      SEA 07:05
      Portland - Seattle | Fri, Dec 18 | Alaska Airlines
      US$159
      53% off
      US$341 US$159
    • PDX 13:52
      1h
      Direct
      SEA 14:52
      Portland - Seattle | Sat, Dec 26 | Alaska Airlines
      US$245
      28% off
      US$341 US$245
    • PDX 13:00
      17h 25m
      1 stop
      SEA 14:00
      Portland - Seattle | Wed, Nov 18 | Normal Airline
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Displayed flight fares from Portland to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from Portland International Airport to Seattle-Tacoma International Airport?

The cheapest airline flying from Portland International Airport to Seattle-Tacoma International Airport is Alaska Airlines (from US$108) among 1 carriers operating this route. Based on Trip.com's latest 7-day flight data.
easyJet logo easyJet Wizz Air UK logo Wizz Air UK British Airways logo British Airways Jet2.com logo Jet2.com Virgin Atlantic logo Virgin Atlantic
Alaska Airlines logo Alaska Airlines

Trip.com Price Insights: Flights from Portland International Airport to Seattle-Tacoma International Airport

What is the cheapest month to fly from Portland International Airport to Seattle-Tacoma International Airport?

The data is based on the past 12 months and shows the average one-way ticket prices from Portland International Airport to Seattle-Tacoma International Airport for each month in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest one-way flights from Portland International Airport to Seattle-Tacoma International Airport are usually in January, with an average price of US$106. It is best to avoid October, when the average price can reach US$246.

US$246
US$176
US$106
US$36
    Cheapest
  • US$155
    Nov
  • US$155
    Dec
  • US$106
    Jan
  • US$127
    Feb
  • US$223
    Mar
  • US$189
    Apr
  • US$169
    May
  • US$207
    Jun
  • US$179
    Jul
  • US$230
    Aug
  • US$205
    Sep
  • US$246
    Oct

What is the cheapest day of the week to fly from Portland International Airport to Seattle-Tacoma International Airport?

The data is based on the past 12 months and shows the average ticket prices from Portland International Airport to Seattle-Tacoma International Airport for each day of the week in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest departure day from Portland International Airport to Seattle-Tacoma International Airport is Wednesday, with average prices usually lower than other days. Avoid departing on Saturday as prices are typically highest on that day.

US$257
US$210
US$162
US$115
    Cheapest
  • US$187
    Mon
  • US$213
    Tue
  • US$162
    Wed
  • US$193
    Thu
  • US$184
    Fri
  • US$257
    Sat
  • US$176
    Sun

What is the flight schedule from Portland International Airport to Seattle-Tacoma International Airport?

Check the schedule for flights from Portland to Seattle and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AS2284

    Portland International Airport

    13:49

    PDX

    59m

    14:48

    SEA

    S M T W T F S
    Search

  2. AS3038

    Portland International Airport

    12:02

    PDX

    1h 4m

    13:06

    SEA

    - M T W - - -
    Search

  3. AS2408

    Portland International Airport

    09:25

    PDX

    58m

    10:23

    SEA

    S M T W T F S
    Search

  4. AS2254

    Portland International Airport

    17:40

    PDX

    1h

    18:40

    SEA

    - M T W - - -
    Search

  5. AS490

    Portland International Airport

    07:22

    PDX

    1h 8m

    08:30

    SEA

    S M T W T F S
    Search

  6. AS427

    Portland International Airport

    07:08

    PDX

    1h 7m

    08:15

    SEA

    S M T W T F S
    Search

  7. DL3913

    Portland International Airport

    19:40

    PDX

    1h 10m

    20:50

    SEA

    - M T W T - -
    Search

  8. AS1432

    Portland International Airport

    21:45

    PDX

    1h 12m

    22:57

    SEA

    S M T W - F S
    Search

  9. DL3918

    Portland International Airport

    17:51

    PDX

    1h 14m

    19:05

    SEA

    S M T W T F S
    Search

  10. AS236

    Portland International Airport

    14:50

    PDX

    1h 54m

    Direct

    16:44

    SFO

    S M T W - F S
    Search

  11. AS620

    San Francisco International Airport

    20:58

    SFO

    2h 15m

    Direct

    23:13

    SEA

    S - - W - F S
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FAQs for Portland International Airport to Seattle-Tacoma International Airport Flights

  • How long is the flight from Portland International Airport to Seattle-Tacoma International Airport?

    Portland International Airport to Seattle-Tacoma International Airport takes about 37 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 12 daily flights from Portland International Airport (PDX) to Seattle-Tacoma International Airport (SEA).
  • The earliest flight from Portland International Airport to Seattle-Tacoma International Airport departs at 05:05, and the last departs at 21:59, with about 24 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Portland International Airport (PDX) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around US$344 in November, the most expensive month to book this route.
    • The distance from Seattle-Tacoma International Airport to downtown is about 17km, by taxi about 30 minutes.
  • Delta Air Lines is a very popular airline operating an average of 1385 flights per month.
  • One-way flights from Portland International Airport to Seattle-Tacoma International Airport currently start from US$108, and round-trip fares start from US$112. The current lowest fare is a Alaska Airlines flight departing on Wed, Dec 23; prices may vary depending on availability.
  • Yes. Alaska Airlines and Delta Air Lines operate direct flights from Portland International Airport to Seattle-Tacoma International Airport, with an average flight time of 35 minutes, and around 134 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Portland International Airport to Seattle-Tacoma International Airport is US$300. Prices may vary depending on the departure date, airline, and availability.
  • WestJet and Condor are the most popular budget airlines flying from Portland International Airport to Seattle-Tacoma International Airport, with one-way fares starting from US$108. Compare final prices carefully, as baggage, seat selection and payment fees may apply.
  • Portland International Airport to Seattle-Tacoma International Airport operates around 131 weekly flights, mainly by Alaska Airlines and Delta Air Lines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Portland International Airport and Seattle-Tacoma International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Find Cheap Flights with Trip.com

Note: Prices shown on this page are the estimated lowest prices and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed on this page are all-inclusive (including taxes, fuel surcharges, civil aviation development fund, etc.), with all fees confirmed before payment. Fees for luggage, meals, Wi-Fi, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours—sometimes even in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the cancellation and change policies for each flight ticket during the booking process, including any fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply according to the airline's ticket policy.
Cancellation/change due to a flight schedule change:
If the flight schedule has changed and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please visit the customer support pages.