PDX - SEA

$54 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 4/14. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$117
Overall average: $204
Frontier
Tue 4/14Fri 4/17
PDX - SEA • 1 stop
Cheapest non-stop
$137
Typical prices: $157-$282
Delta
Sat 4/4Sat 4/11
PDX - SEA • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
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
Frontier
Cheapest • from $117 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with Alaska Airlines and Delta. Average duration is 1h 03m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 60% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 35% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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!
Flight Deals
Booking Insights
Expert advice
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

Tue, Apr 14 - Fri, Apr 17
Frontier Logo
1:48 pm - 9:27 am
PDX
-
SEA
19h 39m
1 stop
Frontier Logo
6:57 pm - 11:42 am
SEA
-
PDX
16h 45m
1 stop
$117Frontier
Sat, Apr 4 - Sat, Apr 11
Delta Logo
5:30 am - 6:38 am
PDX
-
SEA
1h 08mnonstop
Delta Logo
7:25 am - 8:34 am
SEA
-
PDX
1h 09mnonstop
$137Delta
Sat, Mar 14 - Sun, Mar 15
Hawaiian Airlines Logo
1:36 pm - 2:41 pm
PDX
-
SEA
1h 05mnonstop
Hawaiian Airlines Logo
7:45 am - 8:49 am
SEA
-
PDX
1h 04mnonstop
$146Hawaiian Airlines
Sat, Mar 14 - Sun, Mar 15
Hawaiian Airlines Logo
8:30 am - 9:37 am
PDX
-
SEA
1h 07mnonstop
Hawaiian Airlines Logo
9:40 pm - 10:41 pm
SEA
-
PDX
1h 01mnonstop
$147Hawaiian Airlines
Tue, Apr 28 - Sat, May 16
Delta Logo
5:30 am - 6:37 am
PDX
-
SEA
1h 07mnonstop
Delta Logo
7:38 am - 8:45 am
SEA
-
PDX
1h 07mnonstop
$157Delta
Wed, Apr 29 - Sat, May 16
Frontier Logo
1:48 pm - 9:27 am
PDX
-
SEA
19h 39m
1 stop
Frontier Logo
10:42 am - 11:57 am
SEA
-
PDX
25h 15m
1 stop
$160Frontier
Tue, May 5 - Wed, Sep 16
Alaska Airlines Logo
8:45 am - 9:48 am
PDX
-
SEA
1h 03mnonstop
Alaska Airlines Logo
2:00 pm - 2:55 pm
SEA
-
PDX
0h 55mnonstop
$162Alaska Airlines
Sat, Apr 4 - Sat, Apr 11
Hawaiian Airlines Logo
6:00 am - 7:02 am
PDX
-
SEA
1h 02mnonstop
Hawaiian Airlines Logo
1:03 pm - 4:45 pm
SEA
-
PDX
3h 42m
1 stop
$165Hawaiian Airlines
Tue, Apr 28 - Thu, May 14
Delta Logo
5:30 am - 6:37 am
PDX
-
SEA
1h 07mnonstop
Delta Logo
7:38 am - 8:45 am
SEA
-
PDX
1h 07mnonstop
$167Delta
Sun, Apr 5 - Sun, Apr 12
Hawaiian Airlines Logo
10:10 am - 11:13 am
PDX
-
SEA
1h 03mnonstop
Hawaiian Airlines Logo
9:31 am - 10:36 am
SEA
-
PDX
1h 05mnonstop
$170Hawaiian Airlines
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.

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 Wednesday 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 $139 (return) on average. On the other hand, the most expensive months are March and May, where the average cost of round-trip tickets is $297 and $257 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 60% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Expert advice

Expert advice for your flight from Portland to Seattle

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Qatar Airways and Delta

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.

Blane Bachelor

Blane Bachelor

Expert on KLM

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.

Robert Schrader

Robert Schrader

Expert on Korean Air

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.

Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

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.

Gabriel Leigh

Gabriel Leigh

Expert on PDX

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.

Good to know

Low seasonJuly
Cheapest flight$54
Best time to beat the crowds but there is an average 18% increase in price.
Most popular time to fly and prices are also 1% 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 $54 for a one-way ticket and $117 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?

    Alaska Airlines, American Airlines, Delta, and JetBlue offer inflight Wi-Fi service on the Portland to Seattle flight route.

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

    The Boeing 737-800 Passenger/BBJ2 (winglets) 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, and oneworld 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 $229 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 $186 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 $166 or less one-way and $459 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 11918 reviews
8.1Boarding
7.1Food
7.0Entertainment
7.8Comfort
8.5Crew
Airline reviews

Experience overall was great, we didn’t land upside down like a Delta plane once did. The entertainment section didn’t apply for me, but I put excellent I think anyway.

10.0 ExcellentAnonymous, Feb 2026
ATL - SEA
Read more Alaska Airlines reviews

Experience overall was great, we didn’t land upside down like a Delta plane once did. The entertainment section didn’t apply for me, but I put excellent I think anyway.

Attentive, caring. Loved the communication in the app even before boarding and while on plane from pilots.

The agent changed my seat and upgraded me free. The flights are ALWAYS delayed. We sat there almost an hour while the plane was held for 4 passengers. I was then unable to make my connecting flight. This is why I dont fly alaska unless there are no more flights with delta

The flight was on time and got in early which allowed us to get to our next flight.

The plane not having any overhead bin space was inconvenient. Anytime my luggage has to be checked it ends up covered in scratches and that’s not covered by the airlines for replacement/repair. The WiFi did not work or was not offered for the flight from Seattle to Vancouver.

Most of it was good. The flights were on time. The staff were helpful and friendly. I had a short time connecting flights and they let me deplane first and I made the connection. On the outbound from DTW to SEA I was seated in the middle of two very large people. I am petite and even with my arms crossed they were both hanging over into my seat touching me. The meal had way too much pepper and spice, my lips were burning. Other than those two issues, I was pleased with the service and the trip and will use Alaska Air again.

Wheelchair assistant was on the spot, and very helpful. Gate agent was kind, and made sure I boarded the plane without having to try to hurry with my painful hip. My seat was so comfortable, 20A. I am tall, 5'9 and I need to stretch out my legs due to chronic nerve pain in my back that runs down my right leg, in addition to the bursitis in my right hip. Alaska air has the best economy seating in the market. So much room for legs, elbows, etc. When I arrived in SEA, the next Wheelchair was waiting to take me to the next gate. Great communication.

I had to cancel my trip due to health reasons three days after making the reservation. I was stunned to find out that the ticket was not able to be credited for future travel. $734 loss. Not happy that this was not my experience with Southwest Airlines. I will stick with SW in the future. Boo Alaskan Air and Kayak.

The staff was extremely helpful and accommodating. The only thing I could have done without was the long layover in between flights but I was going to a less popular destination so it was understandable.

All went well, right on time, easy boarding. We ordered the evergreens grain bowl and were surprised and pleased how adequate it was for vegan lunch! Landing was smooth and gate exit was easy

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

Never got on it. Was re-routed through Detroit and am still in airports 12 hours later waiting for my connecting plane to arrive.

Delta has too many delays now days. It is 1:06 am now. I was supposed to land in Norfolk at 10:30 pm. I got re-booked through Detroit and I’m still in Detroit. I hope to be landed in Norfolk by 3am. I’ve been in airports for 12 hours as of right now. There is a weather delay now but most delays lately have been maintenance.

Very Very late. Subsequent flights left an hour before ours

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Second flight in a row where the entertainment system is broken. 5 hour long flight with no entertainment and flight attendants did not seem interested in resolving the matter. Very shocked to be treated this poorly considering I paid for a first class experience and have Diamond Medallion status.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Horrible food and crew. Crew were laughing and talking loud while people were trying to sleep

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

Unfortunately, I was put into the middle seat in the first row of premium seating. Sounds nice right? No! that is the worst seat in the plane. I wish I was in economy rather than be in that seat! There is no seat back pocket, no tray table, no charger. Nothing! so unless you're row mates are willing to let you share their basic amenities any flyer should have, you are stuck. It was the worst experience ever! And the flight attendant forgot to take my drink order. I felt like the forgotten flyer.

Delayed and cancelled flights were hard and very stressful, both ways!

I had to cancel the flight because with a 3 hour delay for 'unexpected maintenance' in getting to LAX, I couldn't connect to an overseas flight that I had booked on Scandinavian Air.

The flight was CANCELED!!! Can’t get much more “poor” than that. I had to switch to American Airlines, add another layover and got home in Honolulu 4 hours later than I was supposed to be home. One bright spot was Josh with Alaska Airlines at SFO. He got me on a United Flight that got me home a few hours before I would have. Without him I would have gotten home almost 7 hours after my originally scheduled flight.

Canceled my flight within 24 hours, causing me arriving home midnight. Will never book Hawaiian airlines anymore

The entire crew had everything handled and truly worked together. More than once, I saw them hustle down the aisle and back just to serve customers.

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$1,1561h 02m
Trains$673h 30m