SEA - PWM

$121 Find Cheap Flights from Seattle to Portland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Portland departing on 2/20. 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 Portland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Portland.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Portland.
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Everything you should know

Cheapest round-trip
$241
Overall average: $451
United Airlines
Sat 2/28Wed 3/4
SEA - PWM • 1 stop
Cheapest one-way
$121
Typical prices: $165-$388
Delta
Fri 2/20
SEA - PWM • 1 stop
Top airlines
United Airlines
Cheapest • from $241 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 39% price drop
July
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 Portland!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Portland (SEA-PWM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Portland 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 Seattle to Portland

Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
12:42 pm - 11:20 pm
SEA
-
PWM
7h 38m
1 stop
United Airlines Logo
3:05 pm - 11:51 pm
PWM
-
SEA
11h 46m
1 stop
$241United Airlines
Mon, Feb 23 - Thu, Feb 26
United Airlines Logo
7:00 am - 11:20 pm
SEA
-
PWM
13h 20m
2 stops
United Airlines Logo
3:10 pm - 11:51 pm
PWM
-
SEA
11h 41m
1 stop
$246United Airlines
Tue, Mar 10 - Tue, Mar 17
American Airlines Logo
10:57 pm - 12:14 pm
SEA
-
PWM
10h 17m
1 stop
American Airlines Logo
5:40 pm - 12:24 am
PWM
-
SEA
9h 44m
1 stop
$251American Airlines
Tue, Mar 10 - Tue, Mar 17
American Airlines Logo
10:08 pm - 12:14 pm
SEA
-
PWM
11h 06m
2 stops
American Airlines Logo
5:40 pm - 12:24 am
PWM
-
SEA
9h 44m
1 stop
$256American Airlines
Mon, Jun 1 - Sat, Oct 31
Delta Logo
10:35 pm - 11:57 am
SEA
-
PWM
10h 22m
2 stops
Delta Logo
11:30 am - 6:30 pm
PWM
-
SEA
10h 00m
2 stops
$261Delta
Wed, Mar 4 - Wed, Mar 11
Delta Logo
11:15 pm - 1:43 pm
SEA
-
PWM
11h 28m
2 stops
Delta Logo
2:30 pm - 10:20 pm
PWM
-
SEA
10h 50m
1 stop
$275Delta
Tue, Aug 11 - Tue, Aug 25
Delta Logo
11:53 pm - 10:49 am
SEA
-
PWM
7h 56m
1 stop
Delta Logo
6:00 am - 1:46 pm
PWM
-
SEA
10h 46m
1 stop
$278Delta
Tue, May 5 - Tue, May 12
Delta Logo
12:00 pm - 12:46 am
SEA
-
PWM
9h 46m
1 stop
Delta Logo
1:18 pm - 11:41 pm
PWM
-
SEA
13h 23m
2 stops
$280Delta
Fri, Feb 27 - Tue, Mar 3
Delta Logo
11:15 pm - 12:00 pm
SEA
-
PWM
9h 45m
1 stop
Delta Logo
2:35 pm - 10:05 pm
PWM
-
SEA
10h 30m
2 stops
$281Delta
Tue, Aug 11 - Tue, Aug 25
Delta Logo
11:53 pm - 10:49 am
SEA
-
PWM
7h 56m
1 stop
Delta Logo
11:38 am - 6:29 pm
PWM
-
SEA
9h 51m
2 stops
$283Delta
Booking Insights

KAYAK's insights & trends for Seattle to Portland flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Portland, 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 Seattle to Portland is January, where tickets cost $308 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $863 and $548 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Portland, 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 Seattle to Portland, you should book around 5 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$121
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Seattle to Portland

When to book flights from Seattle to Portland

Are your dates flexible? Find out the best times to travel from Seattle to Portland 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 Seattle to Portland

  • What is the cheapest flight from Seattle to Portland?

    In the last 3 days, the lowest price for a flight from Seattle to Portland was $121 for a one-way ticket and $241 for a round-trip.

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

    A passport is not required to fly from Seattle to Portland.

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

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Portland?

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Portland are Southwest and Alaska Airlines. With an average price for the route of $504 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $778 and an overall rating of 8.0.

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

    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 Seattle to Portland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Seattle 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 Seattle to Portland?

    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 Portland with an airline and back to Seattle with another airline. Booking your flights between Seattle and PWM 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 Seattle to Portland?

    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 Portland from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Seattle to Portland

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Portland. 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 Seattle to Portland? 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 11882 reviews
7.1Food
8.1Boarding
8.5Crew
7.8Comfort
7.0Entertainment
Airline reviews

I paid for the WiFi and it didn’t work during the whole flight

2.0 MediocreGloria, Feb 2026
SEA - SNA
Read more Alaska Airlines reviews

I paid for the WiFi and it didn’t work during the whole flight

Impressed that Alaska Air(for our domestic flight) transferred our checked bags to EVA (for our international flights) so that we didn't have to handle them, & we just picked them up at our final destination.

I enjoyed the movie selection. I’m glad I saw ahead of time to bring personal ear buds. I don’t normally have them with me and airlines used to give them out.

man & woman back side flight attendant was very rude. I live in Seattle. I use a lot of time Alaska flights. I always like them for fact that my favorite airline employees very rude. It’s disappointing. .

Great experience, staff and crew were very professional, friendly and helpful!

I think Alaska should start including free meals on these longer trips.

Wheelchair assistance was excellent. I had a saver fare, but was given a seat in Premium. So very nice!! Extra legroom, complimentary beer. The flight crew was very nice and efficient. The gate agent in Seattle double checked to make sure I was able to board the plane all right while using my cane. I boarded first. So considerate! The flight was smooth, and right on time.

There is nothing critical to complain about but I would say the snacks are pretty bad Airline staff could be aggressive the way they move through the aisles and the plane I also got hustled for a small wallet size men bag and force the consolidated with my carry on item we're talking about a wallet size bag.

Departed on time and had an efficient boarding process. The inflight wifi was not working on one of the flights.

How can I review what was denied to me. Instead of offering to let me pay for the ticket I got booted of my flight with no way home and no choice but to purchase another ticket for 12 hours later. Filing a complaint with the DOT

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

My flight from Denver to Minneapolis was excellent. My flight from Minneapolis to Denver was one of the worst I flights I have ever experienced. I had a window seat, the gentleman in the middle seat was morbidly obese and SW should have made him purchase two seats. His elbow dug into my arm most of the way even after I asked to please be careful. I was literally squashed between the him and the window with no wiggle room. The plane was full so it was not possible to ask for a different seat. I realize I should have complained to the flight attendant but I didn't feel anything could be done to rectify the situation. I fly SW often, I will continue to do so as this was my first negative experience.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

Flight attendants very hospitable and friendly. Pilot flew a smooth take off and landing.

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled. No snack or drink on this flight.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

Smallest leg room I've ever had on a plane.

They took all carry-on luggage from Groups 6 -9 - I was group 5 and waiting in line to board - they made me check my luggage too. That then went to baggage claim and delayed departure from the airport. There was overhead room in my seating area - Delta over reacted. Also, had a gentleman next to me that took up 1/2 my seat.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

The gate agent was most helpful in getting me on to fly standby. I greatly appreciate it.

bulkhead seat had very little legroom - even in bsiness class.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Sorry I didn't realize I was writing a review for each leg. Please see my previous review - it applies to the entire flight, not just a single leg.

This is the first time I've been disappointed with Delta. I was called by Delta to see if I would volunteer to change flights since my original flight home was overbooked. I accepted. The modified booking only provided me a 35 minute layover - when you subtract the fact that boarding closes for a flight 15 minutes early, that gave me 20 minutes to run for one end of the airport to the other. I barely made it. On the 2.5 hour flight to Tampa, the crew repeatedly let us know over the intercom that they cannot serve drinks or snacks due to safety/turbulence. I would have accepted this reason if they did not CONTINUALLY SERVE DRINKS AND COOKED FOOD to First class. If safety is the excuse then the entire plane should be strapped in for safety. On top of this the air conditioning vents were not working correctly and the plane was uncomfortably warm. I love Delta and am a loyal Delta traveler, and I have never had an experience like this. I don't know if there's a disconnect between availability among third-party sites like KAYAK and the airlines or what, but when overbooking causes issues like this for travelers it should be reviewed and changes to the booking process should be made. I blame BOTH KAYAK and Delta for this terrible experience.

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Much better than Spirit. I was please by the easy fast check in and boarding

Everything was on time Will use united again for sure

Didn't get a seat assignment until the last minute even though i picked a seat.

American has been able to implement an algorithm that makes it possible for nearly every one of my evening flights to be late. Congratulations!

I was on a small regional flight from Detroit to Philadelphia. When we landed the outside cruise needed to turn something off with the engine, which took quite a long time. Then, when they allowed us to get off the plane it was outside. They took their time, unloading all the luggage and waited till they unloaded all the luggage before they brought it over to us. It was 9 o’clock at night freezing cold out, and there was no proactive hustle to try to get people their luggage. It was really one of the worst experiences I think I’ve ever had with American until a manager came over. I don’t think they were going to even consider pulling the luggage over to the people that had been waiting outside for at least 10 minutes in the freezing cold.

The flight was fine, once we got underway. It was more than hour delayed

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Waited for oxygen tanks for 30 minutes after boarding was complete.

The seats are too uncomfortable for anyone over 5ft 8in. I'm 5'10" with a back and hip issue and I was in pai for the full duration of the flight.

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

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

Information on your arrival and departure airports