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$63+ Cheap flights from Portland to Seattle (PDX - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SEA
Mar 26 — Apr 21
Wed 3/26
Wed 4/2
1 adult, Economy
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1. Tell us where you want to go
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Cheapflights Tip: The best prices from Portland to Seattle/Tacoma Intl are usually found in August or January, booked 47 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Portland to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$122
(Mytrip)

One-way from

$63
(Mytrip)

Popular in

March

Cheapest in

August

Average price

$292

Good round-trip deal

$495 or less

Good one-way deal

$195 or less
Provider with most accurate pricing for Portland-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Seattle/Tacoma Intl flights.
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From Portland to Seattle/Tacoma Intl
Search Deals
One-way flight from Portland to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals
Price to beat on a round-trip flight from Portland to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Portland to Seattle/Tacoma Intl.
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Find flight deals from Portland to Seattle

Cheapest flights from Portland to Seattle
Explore the most affordable flight options available from Portland to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2025.

This Mytrip deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/227:01 pmPDX - SEA
1 stop16h 34mSpirit Airlines
Thu 5/18:56 pmSEA - PDX
1 stop16h 41mSpirit Airlines
Deal found 3/21$122
This Delta deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/231:55 pmPDX - SEA
Nonstop1h 07mDelta
Fri 4/2510:59 pmSEA - PDX
Nonstop0h 57mDelta
Deal found 3/21$147
This Alaska Airlines deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/191:25 pmPDX - SEA
Nonstop0h 58mAlaska Airlines
Sat 4/195:30 pmSEA - PDX
Nonstop0h 53mAlaska Airlines
Deal found 3/21$151
This Trip.com deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/32:30 pmPDX - SEA
Nonstop1h 00mHawaiian Airlines
Sat 5/105:30 amSEA - PDX
Nonstop0h 55mHawaiian Airlines
Deal found 3/20$152
This Mytrip deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1510:41 amPDX - SEA
2 stops13h 29mMultiple Airlines
Sun 5/183:20 pmSEA - PDX
1 stop25h 25mMultiple Airlines
Deal found 3/19$305
This Southwest deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/196:50 pmPDX - SEA
1 stop4h 50mSouthwest
Tue 6/247:30 amSEA - PDX
1 stop4h 50mSouthwest
Deal found 3/20$411
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/146:23 pmPDX - SEA
2 stops17h 26mUnited Airlines
Wed 4/1612:45 pmSEA - PDX
1 stop20h 48mUnited Airlines
Deal found 3/20$468

Cheapflights Fare Finder

Customize your flight search to find flights from Portland to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2025.
Use the filters below to find and compare flights from Portland to Seattle that are best for you.

Fly from

Portland

Fly to

Seattle

Route

Depart

Return

Price

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Tue 4/22

7:01 pm-11:35 am

1 stop16h 34m

Seattle/Tacoma Intl

Thu 5/1

8:56 pm-1:37 pm

1 stop16h 41m

$122

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 4/23

1:55 pm-3:02 pm

Nonstop1h 07m

Seattle/Tacoma Intl

Fri 4/25

10:59 pm-11:56 pm

Nonstop0h 57m

$147

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 4/19

1:25 pm-2:23 pm

Nonstop0h 58m

Seattle/Tacoma Intl

Sat 4/19

5:30 pm-6:23 pm

Nonstop0h 53m

$151

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 5/3

2:30 pm-3:30 pm

Nonstop1h 00m

Seattle/Tacoma Intl

Sat 5/10

5:30 am-6:25 am

Nonstop0h 55m

$152

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Thu 5/15

10:41 am-12:10 am

2 stops13h 29m

Seattle/Tacoma Intl

Sun 5/18

3:20 pm-4:45 pm

1 stop25h 25m

$305

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Thu 6/19

6:50 pm-11:40 pm

1 stop4h 50m

Seattle/Tacoma Intl

Tue 6/24

7:30 am-12:20 pm

1 stop4h 50m

$411

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Mon 4/14

6:23 pm-11:49 am

2 stops17h 26m

Seattle/Tacoma Intl

Wed 4/16

12:45 pm-9:33 am

1 stop20h 48m

$468

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Tue 5/13

5:40 pm-12:10 am

1 stop6h 30m

$63

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 5/21

1:25 pm-2:26 pm

Nonstop1h 01m

$67

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Tue 5/20

2:30 pm-3:26 pm

Nonstop0h 56m

$68

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 13 results
1
2

Compare providers for flights from Portland to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Seattle in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Portland to Seattle flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-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.
Cheapflights partnered with top experts to bring you the best recommendations for your Portland to Seattle trip
Airlines
Qatar Airways

Qatar Airways allows only one carry-on item in economy, plan accordingly.


Qatar Airways' business class offers luxury with pajamas and private pods.

Read more about Qatar Airwaysby Brandon Schultz
Korean Air

Korean Air's Sky Priority lanes streamline check-in for Prestige and SkyTeam Elite.


Korean Air offers 33”-34” seat pitch in economy, more spacious than many airlines.

Read more about Korean Airby Yulia Denisyuk
Alaska Airlines

Alaska Airlines offers 32” legroom in Main Cabin, ideal for short flights.


Alaska Airlines provides Wi-Fi for a flat fee, great for business travelers.

Read more about Alaska Airlinesby Robert Schrader
Airports
PDX

Expect security wait times up to 30 minutes during peak hours. Use Express Lanes if eligible for faster processing.

Read more about PDXby Brandon Schultz
SEA

Take the Link light rail from SEA to downtown Seattle. It's affordable, runs every 10 minutes, and takes under 40 minutes.

Read more about SEAby Brandon Schultz
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on Qatar Airways, PDX and SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on Korean Air

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

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

Best time to book a flight from Portland to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to Seattle. Price data was last updated on March 14, 2025.

The price you pay for your flight from Portland to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 47 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Portland to Seattle?

Currently, January is the cheapest month in which you can book a flight from Portland to Seattle (average of $238). Flying from Portland to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to SEA?

Find hourly flight availability from Portland to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 21, 2025.

When flying from Portland to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 49% versus a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Portland to Seattle. Price data was last updated on March 16, 2025.

Travelers seeking maximum savings on their Portland to Seattle flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portland to Seattle

Explore weekly flight availability from Portland to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 21, 2025.

The most flights from PDX to SEA are scheduled on a Thursday (73 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (41 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated March 21, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Portland to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,278 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,759 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,895 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,325 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.1
Very good
4,278 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Portland to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Portland to Seattle?

    If you book a flight from Portland to Seattle, you will be flying from Portland to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from Portland (PDX) take 0h 48m for a nonstop flight. There are 54 flights from Portland to Seattle per day from 4 airlines.

  • How popular is this Portland to Seattle flight route?

    The Portland to Seattle/Tacoma Intl flight path was viewed by 292 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Portland to Seattle round-trip?

    Cheapflights users have booked flights from Portland to Seattle round-trip from $122. Other airlines that can offer you cheap pricing are Delta, from $147, and Alaska Airlines, from $151. Spirit Airlines is currently priced 40% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Portland to Seattle one-way?

    One-way options have recently been found by users for as low as $63 on Spirit Airlines. Other airlines that offer cheap prices include Hawaiian Airlines from $67 and Alaska Airlines from $68 one-way.

  • What are the most reliable airlines from Portland to Seattle?

    No one likes to see their flight delayed. When booking a flight from Portland to Seattle consider choosing Aeromexico (99%), Delta (90%) or Korean Air (89%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Portland to Seattle?

    While on average a flight from Portland to Seattle is generally $2,218, our data shows the cheapest flight currently is $113. When looking at the most popular route, (Portland - Seattle/Tacoma Intl), you can expect to pay $133 for that flight.

  • Can I find deals for flights from Portland to Seattle that include hotel bookings?

    Yes. In addition to deals on Portland to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Seattle.

  • Can I find deals for business class flights from Portland to Seattle?

    Yes. Cheapflights offers flight deals from Portland to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Portland to Seattle (average of $238). Flying from Portland to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Lacey
Ocean Shores
Leavenworth
Federal Way
Olympia
Cle Elum
Centralia
Mukilteo
Issaquah
Aberdeen
Shoreline
Lynnwood
Shelton
Silverdale
Redmond

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portland to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Portland to Seattle

Discover the top 3 airlines that operate flights from Portland to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$78Average$191FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$116Average$208FlexibilityNo cancel feeOn-time75%
DeltaCheapest$116Average$197FlexibilityNo cancel feeOn-timeN/A
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