Cheap Flights from Portland to Seattle

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Flight deals from Portland Airport to Seattle

Looking for a cheap last-minute deal or the best return flight from Portland Airport to Seattle? If you want to travel next month, return fares start from R 2,997. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Portland to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to Seattle flights are currently cheapest in May.

Direct flights from Portland to Seattle

Portland to Seattle: Flight information

The things to know before you go.
Cheapest flight foundR 1,837
Cheapest month to flyMay
Average flight time60 mins
Most popular airlineAlaska Airlines
Average flights per week632

Finding cheap flights from Portland to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Portland to Seattle is R 2,997. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
59 minutes is the average flight time from Portland to Seattle.
Alaska Airlines, Horizon Air and Qatar Airways fly direct from Portland to Seattle.
As of April 2026, there are 632 flights per week flying from Portland to Seattle.
The cheapest month to fly from Portland to Seattle is usually April.
If you're flying from Portland Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from R 2,997.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Seattle on Wednesday, 22 April 2026.
Yes – the average flight time is 59 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 8°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Delta offers the cheapest flight tickets to Seattle.

Flying from Portland International Airport (PDX) to Seattle: what you need to know

  • Expect to be travelling for 1 hour. That's the average journey time for a direct flight from Portland International Airport to Seattle.

  • Seattle's timezone is UTC-8, which is the same as Portland (the location of Portland International Airport).

  • With 123 weekly flights between the two airports, Portland International Airport (PDX) to Seattle-Tacoma International Airport (SEA) is the busiest route. Alaska Airlines operates the earliest flight at 05:08. If you'd like to make the most of your day before jetting off, the latest flight from PDX to SEA is with Alaska Airlines at 22:45.

  • Give yourself enough time to make your PDX to Seattle flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

  • Flying during a peak month such as July? Public holidays and other popular periods can mean longer lines and delays at security. Be extra cautious and get there up to four hours before an international flight and two hours before domestic departures.

  • You can book a direct Portland International Airport to Seattle ticket. Begin your journey at PDX and land at Seattle-Tacoma International Airport (SEA).

  • You'll have your pick of airlines operating direct flights from Portland International Airport to Seattle. Get up and away with one of these:

  • PDX is around 10 kilometres from central Portland. If you're ride-sharing, catching a taxi or driving from the centre, it'll take 20 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the journey time to be around 40 minutes.

  • In search of a hotel near PDX? If you've booked an early flight from Portland International Airport to Seattle, these accommodation options set you up for a seamless send-off:

  • Portland International Airport earns top marks for its on-time performance. 83% of flights that take off from PDX reach their destination on time.

  • PDX is located at 7000 NE Airport Way.

How to find the cheapest flights from Portland International Airport (PDX) to Seattle

  • R 1,837 is currently the lowest price for a one-way Portland International Airport to Seattle flight. A return plane ticket starts from R 2,997. These prices can change depending on demand and availability.

  • Don't wait until the last minute. You're more likely to land cheap flights from PDX to Seattle if you book in advance. Airlines often offer some amazing early bird deals.

  • The 'Whole month' search tool will show you the cheapest tickets from Portland International Airport to Seattle across the month. It's an easy way to snap up a bargain if your travel plans are flexible.

  • Snapping up a cheap flight from PDX to Seattle is easy with Price Alerts. All you need to do is set up one of these automatic notifications and we'll get in touch as soon as a lower fare pops up.

  • Tailor your trip with filters. Select your ideal departure and arrival times, airlines and total journey duration. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest' flights from Portland International Airport to Seattle.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • The distance from Seattle-Tacoma International Airport (SEA) to central Seattle is roughly 23 kilometres. It'll take you about 25 minutes to get to the centre driving.

  • If you're travelling on public transport, expect a journey time of around 35 minutes.

  • The last thing you want is a long journey to your hotel if you're landing late on a flight from Portland International Airport to Seattle. Reserve one of these accommodation options near SEA instead:

  • Reserving your ride from Seattle-Tacoma International Airport around one week before your flight from PDX to Seattle can help you lock in the lowest rate.

Seattle Paine Field International Airport (PAE)

  • The centre of Seattle is around 40 kilometres from Seattle Paine Field International Airport (PAE). After your flight from Portland International Airport to Seattle has hit the runway and you've made your way through the terminal, the drive should be around 40 minutes.

  • If you travel by public transport, you'll get to the city centre in 1 hour 30 minutes or so.

  • Following your PDX to Seattle flight, rest your head at a hotel near PAE. These are some comfortable options that'll help you switch to relaxation mode:

  • Avoid filling out forms at the rental desk by completing your booking beforehand. Secure your ride from PAE ahead of time so you can simply grab the keys and get going.

King County International Airport (BFI)

  • Find your way to the city centre after your flight from Portland International Airport to Seattle has landed. Central Seattle is around 11 kilometres from King County International Airport (BFI) and takes roughly 20 minutes to reach by car.

  • The journey will take roughly 35 minutes when travelling on public transport.

  • Enjoy a quiet, low-key start to your break by choosing a hotel near BFI after your PDX to Seattle flight. Unwind after a day of travel or simply give yourself time to settle into a new destination at:

  • If you prefer a specific kind of vehicle, booking early increases your chances of finding what you want. Secure your ride from BFI at least a few weeks ahead of your flight from Portland International Airport to Seattle.

Best time to go to Seattle

  • July is the most popular month for flights from Portland International Airport to Seattle. To skip the crowds, plan your trip to Seattle in December.

  • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Book your Portland International Airport to Seattle plane ticket then if this is the type of weather you enjoy.

  • February has average temperatures of between -1ºC (30ºF) and 11ºC (52ºF). Look for a cheap ticket from PDX to Seattle around that time if you want to travel when it's cooler.

More about Seattle

  • Once you've booked your flight from Portland International Airport to Seattle, choose a hotel that puts you right where the action is. Make one of these accommodation options your base for exploring Seattle:

  • Pike Place Market and Space Needle are just the start of the popular attractions to add to your Seattle to-do list. Continue your sightseeing adventures at Seattle Skyline.

Explore more of the United States

  • Seattle has its own special appeal, but there are so many other parts of the United States just waiting to be discovered. Around 241 kilometres south of Seattle, a visit to Portland will keep your itinerary packed. Start with leading attractions like Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

  • Around 370 kilometres east of Seattle, Spokane is another favourite stop in the United States. Experience the best of this destination with a visit to Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.