How can I find cheap flights from Portland International Airport to Seattle-Tacoma International Airport?
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 TWD 2,670 and round-trip from TWD 3,149. Based on Trip.com's latest 7-day flight data.
- One way
- Round-trip
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- Cheapest nonstop
PDX 9:31 AM1h 8mNonstopSEA 10:39 AMPortland - Seattle | Mon, Oct 19 | Alaska Airlines
SEA 7:20 AM1h 8mNonstopPDX 8:28 AMSeattle - Portland | Mon, Oct 26 | Alaska AirlinesPricesDeparturePDX-SEAEconomy class
IncludedWi-Fi (additional charge)USB port and power outletReturnSEA-PDX
IncludedTWD 3,149 TWD 4,62432% off32% offTWD 4,624 TWD 3,149 -
PDX 7:09 AM1h 16mNonstopSEA 8:25 AMPortland - Seattle | Wed, Oct 21 | Alaska Airlines
SEA 7:20 AM1h 8mNonstopPDX 8:28 AMSeattle - Portland | Wed, Oct 28 | Alaska AirlinesPricesDeparturePDX-SEAEconomy class
Included
Wi-Fi (additional charge)USB port and power outletReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,187 TWD 4,62431% off31% offTWD 4,624 TWD 3,187 -
PDX 8:44 PM1h 21mNonstopSEA 10:05 PMPortland - Seattle | Thu, Oct 1 | Delta Air Lines
SEA 7:30 AM1h 13mNonstopPDX 8:43 AMSeattle - Portland | Sun, Oct 4 | Delta Air LinesPricesDeparturePDX-SEAEconomy class
Included
Wi-Fi (additional charge)USB port and power outletReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,225 TWD 4,62430% off30% offTWD 4,624 TWD 3,225 -
PDX 7:09 AM1h 16mNonstopSEA 8:25 AMPortland - Seattle | Thu, Oct 22 | Alaska Airlines
SEA 12:13 PM1h 11mNonstopPDX 1:24 PMSeattle - Portland | Thu, Oct 29 | Alaska AirlinesPricesDeparturePDX-SEAEconomy class
Included
Wi-Fi (additional charge)USB port and power outletReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,32028% offTWD 4,624 TWD 3,320 -
PDX 9:32 PM1h 7mNonstopSEA 10:39 PMPortland - Seattle | Thu, Oct 1 | Alaska Airlines
SEA 7:20 AM1h 8mNonstopPDX 8:28 AMSeattle - Portland | Sun, Oct 4 | Alaska AirlinesPricesDeparturePDX-SEAEconomy class
Included
Wi-Fi (additional charge)USB port and power outletReturnSEA-PDX
Included
TWD 3,41026% offTWD 4,624 TWD 3,410 -
PDX 5:49 PM1h 16mNonstopSEA 7:05 PMPortland - Seattle | Mon, Oct 19 | Delta Air Lines
SEA 7:32 AM1h 14mNonstopPDX 8:46 AMSeattle - Portland | Mon, Oct 26 | Delta Air LinesPricesDeparturePDX-SEAEconomy class
Included
Wi-Fi (additional charge)USB port and power outletReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,52824% offTWD 4,624 TWD 3,528 -
PDX 3:31 PM1h 14mNonstopSEA 4:45 PMPortland - Seattle | Fri, Nov 6 | Delta Air Lines
SEA 7:20 AM1h 16mNonstopPDX 8:36 AMSeattle - Portland | Wed, Nov 11 | Delta Air LinesPricesDeparturePDX-SEAEconomy class
Included
Wi-Fi (additional charge)USB port and power outletReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,52824% offTWD 4,624 TWD 3,528 -
PDX 5:49 PM1h 16mNonstopSEA 7:05 PMPortland - Seattle | Thu, Nov 5 | Delta Air Lines
SEA 7:20 AM1h 16mNonstopPDX 8:36 AMSeattle - Portland | Wed, Nov 11 | Delta Air LinesPricesDeparturePDX-SEAEconomy class
Included
Wi-Fi (additional charge)USB port and power outletReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,52824% offTWD 4,624 TWD 3,528 -
PDX 3:34 PM1h 14mNonstopSEA 4:48 PMPortland - Seattle | Sat, Nov 7 | Delta Air Lines
SEA 7:20 AM1h 16mNonstopPDX 8:36 AMSeattle - Portland | Wed, Nov 11 | Delta Air LinesPricesDeparturePDX-SEAEconomy class
Included
Wi-Fi (additional charge)USB port and power outletReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,52824% offTWD 4,624 TWD 3,528 -
PDX 7:35 PM1h 15mNonstopSEA 8:50 PMPortland - Seattle | Wed, Nov 18 | Delta Air Lines
SEA 7:20 AM1h 16mNonstopPDX 8:36 AMSeattle - Portland | Mon, Nov 23 | Delta Air LinesPricesDeparturePDX-SEA
Included
ReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,52824% offTWD 4,624 TWD 3,528 -
PDX 5:49 PM1h 16mNonstopSEA 7:05 PMPortland - Seattle | Wed, Oct 21 | Delta Air Lines
SEA 7:32 AM1h 14mNonstopPDX 8:46 AMSeattle - Portland | Wed, Oct 28 | Delta Air LinesPricesDeparturePDX-SEAEconomy class
Included
Wi-Fi (additional charge)USB port and power outletReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,56223% offTWD 4,624 TWD 3,562 -
PDX 8:44 PM1h 16mNonstopSEA 10:00 PMPortland - Seattle | Thu, Oct 22 | Delta Air Lines
SEA 7:32 AM1h 14mNonstopPDX 8:46 AMSeattle - Portland | Thu, Oct 29 | Delta Air LinesPricesDeparturePDX-SEA
Included
ReturnSEA-PDXEconomy class
Included
Wi-Fi (additional charge)USB port and power outletTWD 3,69920% offTWD 4,624 TWD 3,699 -
PDX 1:00 PM17h 25m1 stopSEA 2:00 PMPortland - Seattle | Thu, Sep 24 | Normal Airline
SEA 3:00 PM6hNonstopPDX 4:00 PMSeattle - Portland | Sat, Sep 26 | Normal AirlineFind more flightsFind more flights
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Cheapest nonstop
PDX 2:30 PM1h 5mNonstopSEA 3:35 PMPortland - Seattle | Wed, Nov 4 | Alaska Airlines
PricesPDX-SEAEconomy classWi-Fi (additional charge)TWD 2,670 TWD 4,16236% off36% offTWD 4,162 TWD 2,670 -
PDX 8:09 AM1h 1mNonstopSEA 9:10 AMPortland - Seattle | Sun, Oct 18 | Alaska Airlines
PricesPDX-SEAEconomy classWi-Fi (additional charge)USB port and power outletTWD 2,699 TWD 4,16235% off35% offTWD 4,162 TWD 2,699 -
PDX 3:48 PM1h 1mNonstopSEA 4:49 PMPortland - Seattle | Wed, Oct 21 | Alaska Airlines
PricesPDX-SEAEconomy classWi-Fi (additional charge)TWD 2,760 TWD 4,16234% off34% offTWD 4,162 TWD 2,760 -
PDX 5:49 PM1h 16mNonstopSEA 7:05 PMPortland - Seattle | Wed, Nov 4 | Delta Air Lines
PricesPDX-SEAEconomy classWi-Fi (additional charge)USB port and power outletTWD 2,78933% offTWD 4,162 TWD 2,789 -
PDX 8:44 PM1h 16mNonstopSEA 10:00 PMPortland - Seattle | Sat, Oct 17 | Delta Air Lines
PricesPDX-SEAEconomy classWi-Fi (additional charge)USB port and power outletTWD 2,80333% offTWD 4,162 TWD 2,803 -
PDX 5:49 PM1h 16mNonstopSEA 7:05 PMPortland - Seattle | Sun, Oct 18 | Delta Air Lines
PricesPDX-SEAEconomy classWi-Fi (additional charge)USB port and power outletTWD 2,80333% offTWD 4,162 TWD 2,803 -
PDX 5:49 PM1h 16mNonstopSEA 7:05 PMPortland - Seattle | Wed, Oct 21 | Delta Air Lines
PricesPDX-SEAEconomy classWi-Fi (additional charge)USB port and power outletTWD 2,81232% offTWD 4,162 TWD 2,812 -
PDX 8:44 PM1h 16mNonstopSEA 10:00 PMPortland - Seattle | Mon, Nov 2 | Delta Air Lines
PricesPDX-SEAEconomy classWi-Fi (additional charge)USB port and power outletTWD 2,82732% offTWD 4,162 TWD 2,827 -
PDX 5:49 PM1h 16mNonstopSEA 7:05 PMPortland - Seattle | Wed, Oct 28 | Delta Air Lines
PricesPDX-SEAEconomy classWi-Fi (additional charge)USB port and power outletTWD 3,32920% offTWD 4,162 TWD 3,329 -
PDX 2:53 PM6h 32m1 stopSEA 9:25 PMPortland - Seattle | Sat, Oct 17 | Alaska Airlines
PricesPDX-SFOEconomy classIn-flight meals are availableWi-Fi (additional charge)USB port and power outletSFO-SEAEconomy classIn-flight meals are availableWi-Fi (additional charge)USB port and power outletTWD 2,94028% offTWD 4,162 TWD 2,940 -
PDX 11:54 AM8h1 stopSEA 7:54 PMPortland - Seattle | Fri, Nov 13 | Alaska Airlines
PricesPDX-SFOEconomy classIn-flight meals are availableWi-Fi (additional charge)USB port and power outletSFO-SEAEconomy classIn-flight meals are availableWi-Fi (additional charge)USB port and power outletTWD 3,11125% offTWD 4,162 TWD 3,111 -
PDX 10:48 AM7h 45m1 stopSEA 6:33 PMPortland - Seattle | Wed, Oct 28 | Alaska Airlines
PricesPDX-SFOEconomy classIn-flight meals are availableWi-Fi (additional charge)USB port and power outletSFO-SEAEconomy classIn-flight meals are availableWi-Fi (additional charge)USB port and power outletTWD 3,13525% offTWD 4,162 TWD 3,135 -
PDX 1:00 PM17h 25m1 stopSEA 2:00 PMPortland - Seattle | Thu, Sep 24 | Normal AirlineFind more flightsFind more flights
Flight fares from Portland International Airport to Seattle-Tacoma International Airport are based on average airline prices for the next 3 months, according to Trip.com’s latest data.
Trip.com Price Insights: Flights from Portland International Airport to Seattle-Tacoma International Airport
Which month has the lowest one-way flight price from Portland International Airport to Seattle-Tacoma International Airport?
Based on Trip.com data from the past 12 months, if you’re looking for low one-way flight fares from Portland International Airport to Seattle-Tacoma International Airport, the best time to book is in January, with an average price of TWD 3,332. Try to avoid August, when prices are highest, averaging around TWD 7,254.
What is the cheapest day of the week to fly from Portland International Airport to Seattle-Tacoma International Airport?
Based on Trip.com data from the past 12 months, the cheapest day to depart from Portland International Airport to Seattle-Tacoma International Airport is usually Sunday, with average fares typically lower than other days. Try to avoid departing on Saturday, as prices are usually the highest on that day.
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 TWD 2,670) among 6 carriers operating this route. Based on Trip.com's latest 7-day flight data.






Find more flights and airlines
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.

AS452
Portland International Airport
9:32 PM
PDX
10:39 PM
SEA
S M T W T F SSearch
DL3918
Portland International Airport
5:50 PM
PDX
7:05 PM
SEA
S M T W T F SSearch
DL3818
Portland International Airport
11:20 AM
PDX
12:37 PM
SEA
S M T W T F SSearch
DL4096
Portland International Airport
8:44 PM
PDX
10:05 PM
SEA
S M T W T - SSearch
AS236
Portland International Airport
2:46 PM
PDX
4:39 PM
SFO
S M T W T F SSearch
AS1340
San Francisco International Airport
4:51 PM
SFO
7:07 PM
SEA
S M T W T F S
AS236
Portland International Airport
2:46 PM
PDX
4:39 PM
SFO
S M T W T F SSearch
AS591
San Francisco International Airport
7:22 PM
SFO
9:40 PM
SEA
S M T W T F S
AS526
Portland International Airport
7:18 AM
PDX
9:23 AM
SFO
S M T W T F SSearch
AS656
San Francisco International Airport
1:51 PM
SFO
4:04 PM
SEA
S M T W T - S
AS2190
Portland International Airport
8:14 AM
PDX
9:10 AM
SEA
S M T W T F SSearch
AS1307
Portland International Airport
2:35 PM
PDX
4:14 PM
SMF
S M T W T F SSearch
AS1723
Sacramento International Airport
7:52 PM
SMF
10:00 PM
SEA
S M - W T - S
AS236
Portland International Airport
2:46 PM
PDX
4:39 PM
SFO
S M T W T F SSearch
AS620
San Francisco International Airport
6:07 AM
SFO
8:20 AM
SEA
S M T W T F S
About Portland International Airport and Seattle-Tacoma International Airport
Learn about Portland International Airport (PDX) and Seattle-Tacoma International Airport (SEA) — including location, terminals, transportation, and travel tips.
| Flight distance | 207.68 km |
|---|---|
| Cheapest one-way ticket price | TWD 2,670 |
| Cheapest return ticket price | TWD 3,149 |
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 36 minutes on average. Actual flight time may vary depending on route, weather and air traffic.How many daily flights are there from Portland International Airport (PDX) to Seattle-Tacoma International Airport (SEA)?
There are around 14 daily flights from Portland International Airport (PDX) to Seattle-Tacoma International Airport (SEA).What is the flight schedule from Portland International Airport to Seattle-Tacoma International Airport?
The earliest flight from Portland International Airport to Seattle-Tacoma International Airport departs at 05:07, and the last departs at 21:32, with about 22 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.When are flight tickets from Portland International Airport (PDX) to Seattle-Tacoma International Airport (SEA) most expensive?
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 TWD 7,208 in October, the most expensive month to book this route.What is the transportation method from the main airport to downtown in Seattle?
- The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
Which airline operates the most direct flights from Portland International Airport (PDX) to Seattle-Tacoma International Airport (SEA)?
Delta Air Lines is a very popular airline operating an average of 1385 flights per month.What are the cheapest flights from Portland International Airport to Seattle-Tacoma International Airport?
One-way flights from Portland International Airport to Seattle-Tacoma International Airport currently start from TWD 2,670, and round-trip fares start from TWD 3,149. The current lowest fare is a Alaska Airlines flight departing on Wed, Nov 4; prices may vary depending on availability.Which airlines offer direct flights from Portland International Airport to Seattle-Tacoma International Airport?
Yes. Alaska Airlines, Delta Air Lines and Korean Air operate direct flights from Portland International Airport to Seattle-Tacoma International Airport, with an average flight time of 32 minutes, and around 140 weekly flights. Actual flight frequency may vary by season.What is the average price of a flight from Portland International Airport to Seattle-Tacoma International Airport?
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 TWD 7,670. Prices may vary depending on the departure date, airline, and availability.Which budget airlines fly from Portland International Airport to Seattle-Tacoma International Airport?
Condor and WestJet are the most popular budget airlines flying from Portland International Airport to Seattle-Tacoma International Airport, with one-way fares starting from TWD 2,670. Compare final prices carefully, as baggage, seat selection and payment fees may apply.How many weekly flights are there from Portland International Airport to Seattle-Tacoma International Airport?
Portland International Airport to Seattle-Tacoma International Airport operates around 99 weekly flights, mainly by Alaska Airlines, Delta Air Lines and Korean Air. Actual frequency may vary during holidays and seasonal schedule adjustments.How do I book flights from Portland International Airport to Seattle-Tacoma International Airport on Trip.com?
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.
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Note: Prices shown on this page are the lowest estimated prices found in the last 24 hours and include all taxes and fees.

