PDX - SEA

$74 Find Cheap Flights from Portland to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Seattle departing on 12/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Seattle, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Portland to Seattle (PDX-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Seattle

Wed, Oct 29 - Wed, Nov 5
Alaska Airlines Logo
1:38 pm - 2:46 pmPDX-SEA
1h 08mnonstop
Alaska Airlines Logo
5:20 am - 6:17 amSEA-PDX
0h 57mnonstop
$109Alaska Airlines
Find Deal
Wed, Oct 22 - Tue, Oct 28
Hawaiian Airlines Logo
1:25 pm - 2:35 pmPDX-SEA
1h 10mnonstop
Hawaiian Airlines Logo
5:20 am - 6:17 amSEA-PDX
0h 57mnonstop
$110Hawaiian Airlines
Find Deal
Wed, Oct 22 - Tue, Oct 28
Alaska Airlines Logo
6:00 pm - 6:54 pmPDX-SEA
0h 54mnonstop
Alaska Airlines Logo
5:20 am - 6:17 amSEA-PDX
0h 57mnonstop
$112Alaska Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 14
Delta Logo
5:25 pm - 6:36 pmPDX-SEA
1h 11mnonstop
Delta Logo
9:29 am - 10:30 amSEA-PDX
1h 01mnonstop
$117Delta
Find Deal
Tue, Mar 3 - Wed, Mar 4
Alaska Airlines Logo
9:10 pm - 10:21 amPDX-SEA
13h 11m1 stop
Alaska Airlines Logo
12:50 pm - 1:46 pmSEA-PDX
0h 56mnonstop
$135Alaska Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
Alaska Airlines Logo
2:30 pm - 3:29 pmPDX-SEA
0h 59mnonstop
Alaska Airlines Logo
11:35 am - 12:38 pmSEA-PDX
1h 03mnonstop
$137Alaska Airlines
Find Deal
Sat, Oct 11 - Mon, Oct 27
Delta Logo
11:10 am - 12:23 pmPDX-SEA
1h 13mnonstop
Delta Logo
6:14 pm - 7:19 pmSEA-PDX
1h 05mnonstop
$147Delta
Find Deal
Wed, Oct 22 - Tue, Oct 28
Hawaiian Airlines Logo
2:30 pm - 7:10 pmPDX-SEA
4h 40m1 stop
Hawaiian Airlines Logo
8:00 am - 9:06 amSEA-PDX
1h 06mnonstop
$158Hawaiian Airlines
Find Deal
Mon, Oct 20 - Sun, Oct 26
Frontier Logo
10:34 am - 5:44 pmPDX-SEA
7h 10m1 stop
Frontier Logo
9:58 pm - 9:39 amSEA-PDX
11h 41m1 stop
$214Frontier
Find Deal
Thu, Oct 16 - Sun, Oct 19
Frontier Logo
12:43 pm - 7:33 amPDX-SEA
18h 50m1 stop
Frontier Logo
8:28 am - 10:58 amSEA-PDX
26h 30m1 stop
$229Frontier
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
Delta's free Wi-Fi enhances connectivity for members.
SEA's free shuttle aids quick terminal access.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Alaska Airlines
Cheapest • from $109 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Video guide: How to find cheap flights to Seattle
Watch video
Watch video
Watch video
Watch video
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 58% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 27% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$109
Overall average: $197
Alaska Airlines
Wed 10/29Wed 11/5
PDX - SEA • Non-stop
Cheapest one-way
$74
Typical prices: $78-188
Alaska Airlines
Sat 12/13
PDX - SEA • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Expert advice

Expert advice for your flight from Portland to Seattle

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Qatar Airways

Qatar Airways' Economy tickets include a free checked bag, ideal for budget-conscious travelers.


Qatar Airways offers Wi-Fi on most aircraft, though some routes have blackout zones.

KLM

KLM's Economy Standard includes one checked bag, beneficial for travelers with luggage.


KLM offers free snacks and drinks on European routes, including wine and beer.

Read more about KLMby Blane Bachelor
Korean Air

Korean Air's Economy class includes complimentary meals and alcohol, enhancing the travel experience.


Korean Air allows free checked bags for all passengers, adding value to the ticket price.

Read more about Korean Airby Robert Schrader
Alaska Airlines

Alaska Airlines' Wine Flies Free program allows free wine shipping from select airports.


Alaska Airlines offers a 20-minute baggage guarantee, ensuring quick baggage claim.

Delta

Delta offers free Wi-Fi for SkyMiles members on domestic flights, enhancing connectivity.


Delta's Sky Priority offers faster check-in for elite status holders and premium cabin passengers.

Read more about Deltaby Stefanie Waldek
Airports
PDX

PDX's modern check-in desks resemble an Apple Store, with clear signage and ample space at security checkpoints, ensuring a smooth departure experience.

Read more about PDXby Gabriel Leigh
SEA

SEA offers a free shuttle from the light rail station to the terminal, saving time if you're in a hurry upon arrival.

Read more about SEAby Harriet Baskas
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Qatar Airways and Delta

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Blane Bachelor

Blane Bachelor

Expert on KLM

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Robert Schrader

Robert Schrader

Expert on Korean Air

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on PDX

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Booking Insights

KAYAK's insights & trends for Portland to Seattle flights

Get data-powered insights and trends into flights from Portland to Seattle to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Seattle
Find cheap flights to Seattle

Planning a trip from Portland to Seattle? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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

The average price of all round-trip flights from Portland to Seattle clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Seattle on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Portland to Seattle. For your return ticket, we recommend flying on a Tuesday and avoiding Saturdays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Seattle is January, where tickets cost $159 (return) on average. On the other hand, the most expensive months are September and March, where the average cost of round-trip tickets is $266 and $259 respectively.

How far in advance should I book a flight from Portland to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to Seattle, you should book around 4 weeks before departure, which saves you about 58% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$74
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 10% lower on average.
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Seattle

  • Can I withdraw cash at SEA?

    If you’d like to withdraw some cash at SEA, you can do so without difficulty, as the airport features ATMs in the Central Terminal and all gated areas.

  • Does SEA have a nursing room?

    SEA has seven nursing rooms. They are located near Gates S, A9, C10, N2, D10, and D23 and on the Main Terminal of the airport’s train stations. Apart from breastfeeding your baby, in any of these rooms, you’ll get the chance to change your baby’s diapers, as they all have changing tables.

  • Does SEA have an on-site hotel?

    SEA does not have an on-site hotel. However, if you’d like to stay at a hotel near this airport, you’ll have many options. They include Hilton Seattle Airport & Conference Center, Crowne Plaza Seattle Airport, and Radisson Hotel Seattle Airport.

  • Does PDX have a children’s play area?

    PDX features two children’s play areas. One is near Gate C17 in Concourse C, while the other is near Gate D7 in Concourse D. At either, your child will have lots of fun, given that they feature a wide variety of toys and child-proof playgrounds.

  • What is the cheapest flight from Portland to Seattle?

    In the last 3 days, the lowest price for a flight from Portland to Seattle was $74 for a one-way ticket and $109 for a round-trip.

  • Do I need a passport to fly between Portland and Seattle?

    No

  • Which airports will I be using when flying from Portland to Seattle?

    Portland and Seattle are both served by 1 main airport. You will leave Portland from Portland and will be arriving at Seattle/Tacoma Intl.

  • Which airlines offer Wi-Fi service onboard planes from Portland to Seattle?

    All the following airlines offer inflight Wi-Fi service on the Portland to Seattle flight route: Alaska Airlines, Hawaiian Airlines, Delta, KLM, American Airlines, and JetBlue.

  • Which aircraft models fly most regularly from Portland to Seattle?

    The Embraer 175 is the aircraft model that flies most regularly on the Portland to Seattle flight route.

  • Which airline alliances offer flights from Portland to Seattle?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Portland and Seattle, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Portland to Seattle?

    There are nonstop flights from Portland to Seattle on a daily basis.

  • Which is the best airline for flights from Portland to Seattle, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Portland to Seattle are Alaska Airlines and Delta. With an average price for the route of $224 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $201 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Portland to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Portland with another airline. Booking your flights between Portland and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Portland to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $193 or less one-way and $481 or less round-trip.
  • At Portland International Airport (PDX), you’ll come across traffic, given that cars continuously pick up and drop off passengers at this airport. Due to its high passenger traffic, you’ll also encounter long lines at the airport’s security checkpoints. To avoid missing your flight at this airport because of being stuck in traffic or delayed at its security checkpoints, on the date you’re set to travel to Seattle, you should get to it at least 2h in advance of your flight.
  • Suppose you’re disabled, sick, or have limited mobility. In that case, you can receive assisted travel services at PDX, as this airport features TSA Care officials whose mandate is to ensure that special travelers receive the help they require while at the airport. To receive assisted travel services, you should contact and inform the airport’s TSA care office of the services you will require at least 72h before your flight.
  • While waiting for your flight to Seattle-Tacoma International Airport (SEA) at PDX, you can check out the art exhibitions spread throughout the airport. You can also visit the airport’s movie theater in Concourse C. At this free-to-enter theater, you will get the chance to see educational and entertaining short films about the Pacific Northwest. If none of these attractions appeals to you, you should consider relaxing at the airport’s spa, The Dragontree Spa. Situated in Concourse C, this spa features well-trained professionals and exceptional spa equipment. Hence, if you visit it, you can count on being well catered to.
  • Once you land at SEA, you can take some time to rejuvenate on one of the two The Club lounges. Located in the airport’s South Satellite and Central Terminal, these lounges feature comfortable seats, magazines, clean toilets, beverages, snacks, and friendly staff.
  • In case you want to rent a car at SEA, you’ll be able to do so as the airport has a dedicated Rental Car Facility that houses car rental agencies such as Alamo, Avis, Budget, Enterprise, Hertz, and National. To get to this facility, you'll board a shuttle outside the baggage claim area of the Main Terminal.

Prefer to fly direct from Portland to Seattle?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Portland to Seattle/Tacoma Intl.
Find which airlines fly direct from Portland Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Portland to Seattle/Tacoma Intl

Monday

Alaska Airlines, Delta

Alaska Airlines, Delta

Tuesday

Alaska Airlines, Delta

Alaska Airlines, Delta

Wednesday

Alaska Airlines, Delta

Alaska Airlines, Delta

Thursday

Alaska Airlines, Delta

Alaska Airlines, Delta

Friday

Alaska Airlines, Delta

Alaska Airlines, Delta

Saturday

Alaska Airlines, Delta

Alaska Airlines, Delta

Sunday

Alaska Airlines, Delta

Alaska Airlines, Delta

See more direct flights

Direct returns

Seattle/Tacoma Intl to Portland

Monday

Alaska Airlines, Delta

Alaska Airlines, Delta

Tuesday

Alaska Airlines, Delta

Alaska Airlines, Delta

Wednesday

Alaska Airlines, Delta

Alaska Airlines, Delta

Thursday

Alaska Airlines, Delta

Alaska Airlines, Delta

Friday

Alaska Airlines, Delta

Alaska Airlines, Delta

Saturday

Alaska Airlines, Delta

Alaska Airlines, Delta

Sunday

Alaska Airlines, Delta

Alaska Airlines, Delta

See more direct flights

Reviews of the top 3 airlines serving from Portland to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Portland to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.8Comfort
7.1Food
8.1Boarding
8.5Crew
7.0Entertainment
Airline reviews

My flight was delayed 2 hours which led me to lose my connection. As a consequence, I had to spend hours changing flights and hotel reservations to arrange my arrival to Vancouver.

2.0 MediocreAnonymous, Sep 2025BWI - SEA
Read more Alaska Airlines reviews

My flight was delayed 2 hours which led me to lose my connection. As a consequence, I had to spend hours changing flights and hotel reservations to arrange my arrival to Vancouver.

No Free Wifi and the flight was a tad late.

The plane was clean. They got us to the destination. It was very difficult to hear the announcements at the gate. The person was speaking way too quickly, and the sound system did not carry to all parts of the seating area at the gate. The flight left more than an hour late, which left many of the passengers missing connections.

The flights left both airports on schedule. The flight from Idaho Falls to Seattle was a typical commuter trip. The flight from Seattle to Maui was not good: It was too long for a flight in a single-aisle plane and too cramped. I kept asking myself if I would ever visit Maui again if airlines continue to run this long flight like a typical short commuter flight. I am not looking forward to the trip home.

The chicken salad was very small, the lettuce was wilted and there was no flavor. The hamburger was excellent.

Mid flight we were bothered by a bee. Kind of odd, but a bee allergy made it a bit stressful. Attendants passed by our aisle during service multiple times. Otherwise, it was fine.

5 1/2 hour flight with no food service or options is inexcusable.

Mostly good. Delayed which in my experience so far happens often with Alaska Airlines. Thank you.

Excellent overall, but had to wait 30 months while taxiing. In fact, I’m still on the plane now!

We received a check-in reminder the day before the flight, and it listed the flight at a later time. Correct flight number, same seats, etc. for 3 hours later. I called the airline to confirm and they had no record of the email. The info was wrong, and we would have missed our flight if we'd assumed it was correct. I want to know where/how we received this incorrect info.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

They we able to seat my companion and I next to each other. Plane’s temperature was very cool. Willl be more prepared on return trip.

All was good and they were able to seat my travel companion next to me. Thank you.

Like the ample leg room. May as well not bother with snacks if it's only a two ounce bag of pretzels. Didn't use the entertainment option. Was there one?

What an amazing flight. I haven’t experienced this level of service in a flight in years. This will be the only way to fly to Hawaii for me in the future.

Kayak sold me a ticket after check in time. Could not check in. Could not get on flight.

Love you guys are so friendly and kind and wonderful

Agents talk too fast over intercom. I know it’s memorized and we’ve all heard it before. Just slow down a little. Stop charging for checked bags. I was pleased to get my bags promptly at each end of my flight.

Everything was great except having to check in at Alaska. That was a surprise and took extra time and effort. Should have been explained somewhere maybe on the HA electronic ticket.

It was clean and the crew was great. I wish the chairs could recline just a little more and you would provide small pillows for people with bad backs. My back is fused and a little support would be great.

I accidentally made this purchase and they wouldn’t refund me even though I called immediately to cancel it.

Everything you need to know for your flight from Portland to Seattle

Information on your arrival and departure airports

Compare transportation modes for Portland to Seattle

Transportation modeAverage priceAverage duration
Flights$9130h 54m
Trains$643h 26m
Buses$520h 00m

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