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$99+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SEA
Aug 21 — Aug 281
Fri 8/21
Fri 8/28
1 adult, Economy
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Find cheap flights from Portland to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Portland to Seattle/Tacoma Intl are usually found in January or December, booked 55 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap 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 July 22, 2026.

This SmartFares deal was found by Cheapflights users on 7/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:09 am
PDX
-
SEA
Nonstop1h 15m
Alaska Airlines
Thu 9/107:08 am
SEA
-
PDX
Nonstop1h 10m
Alaska Airlines
Deal found 7/20$172
This Trip.com deal was found by Cheapflights users on 7/17. 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.
Wed 8/195:41 pm
PDX
-
SEA
Nonstop1h 10m
Alaska Airlines
Wed 8/269:59 pm
SEA
-
PDX
Nonstop0h 59m
Alaska Airlines
Deal found 7/17$176
This Alaska Airlines deal was found by Cheapflights users on 7/16. 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 10/175:45 pm
PDX
-
SEA
Nonstop1h 11m
Alaska Airlines
Wed 10/213:59 pm
SEA
-
PDX
Nonstop1h 01m
Alaska Airlines
Deal found 7/16$177
This Delta deal was found by Cheapflights users on 7/17. 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.
Sun 10/188:44 pm
PDX
-
SEA
Nonstop1h 16m
Delta
Sat 10/3111:00 am
SEA
-
PDX
Nonstop1h 09m
Delta
Deal found 7/17$187
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:22 pm
PDX
-
SEA
1 stop9h 05m
Frontier
Tue 9/157:00 am
SEA
-
PDX
1 stop7h 27m
Frontier
Deal found 7/17$196
This Delta deal was found by Cheapflights users on 7/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:20 am
PDX
-
SEA
Nonstop1h 17m
Delta
Sun 9/139:30 am
SEA
-
PDX
Nonstop1h 10m
Delta
Deal found 7/20$197
This Expedia deal was found by Cheapflights users on 7/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:32 pm
PDX
-
SEA
Nonstop1h 07m
Alaska Airlines
Tue 10/69:10 am
SEA
-
PDX
1 stop11h 40m
Alaska Airlines
Deal found 7/21$200
This Alaska Airlines deal was found by Cheapflights users on 7/17. 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 9/1210:45 am
PDX
-
SEA
1 stop5h 40m
Alaska Airlines
Sat 9/126:51 pm
SEA
-
PDX
Nonstop0h 59m
Alaska Airlines
Deal found 7/17$203
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/119:34 pm
PDX
-
SEA
1 stop12h 26m
Frontier
Wed 9/167:00 am
SEA
-
PDX
1 stop7h 27m
Frontier
Deal found 7/17$204
This Priceline deal was found by Cheapflights users on 7/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:15 am
PDX
-
SEA
1 stop5h 44m
Alaska Airlines
Wed 8/196:51 pm
SEA
-
PDX
Nonstop0h 59m
Alaska Airlines
Deal found 7/17$206
This Alaska Airlines deal was found by Cheapflights users on 7/17. 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.
Fri 8/289:55 pm
PDX
-
SEA
1 stop17h 00m
Alaska Airlines
Sat 8/296:51 pm
SEA
-
PDX
Nonstop0h 59m
Alaska Airlines
Deal found 7/17$207
This Alaska Airlines deal was found by Cheapflights users on 7/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:05 am
PDX
-
SEA
Nonstop1h 10m
Alaska Airlines
Sat 11/710:28 am
SEA
-
PDX
1 stop10h 07m
Alaska Airlines
Deal found 7/19$209

Find 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 July 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$172
(SmartFares)

One-way from

$99
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$262

Good round-trip deal

$279 or less

Good one-way deal

$239 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.
Search Deals
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. 4% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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.
Search Deals

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 July 22, 2026.
Use the filters below to find and compare flights from Portland to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 10/17

10:51 am-12:05 pm

Nonstop1h 14m

Seattle/Tacoma Intl

Wed 10/21

8:59 pm-9:56 pm

Nonstop0h 57m

$177

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Thu 8/27

5:54 pm-7:05 pm

Nonstop1h 11m

Seattle/Tacoma Intl

Sat 9/5

9:30 pm-10:38 pm

Nonstop1h 08m

$187

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Thu 9/10

12:40 pm-1:51 pm

Nonstop1h 11m

Seattle/Tacoma Intl

Tue 9/15

10:50 pm-11:54 pm

Nonstop1h 04m

$187
Quickest round-trip

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Fri 8/28

5:41 pm-6:51 pm

Nonstop1h 10m

Seattle/Tacoma Intl

Sat 8/29

5:40 pm-6:37 pm

Nonstop0h 57m

$187

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 8/22

1:42 pm-2:55 pm

Nonstop1h 13m

Seattle/Tacoma Intl

Sun 8/23

8:59 pm-10:02 pm

Nonstop1h 03m

$197

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 9/9

5:53 pm-10:09 am

1 stop16h 16m

Seattle/Tacoma Intl

Thu 9/10

1:30 pm-2:30 pm

Nonstop1h 00m

$212

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sun 8/16

5:30 am-6:37 am

Nonstop1h 07m

Seattle/Tacoma Intl

Sun 8/23

9:35 am-10:42 am

Nonstop1h 07m

$227

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Thu 8/27

7:09 am-8:24 am

Nonstop1h 15m

Seattle/Tacoma Intl

Sat 9/5

8:48 am-8:49 pm

1 stop12h 01m

$230

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 9/2

9:55 pm-2:55 pm

1 stop17h 00m

Seattle/Tacoma Intl

Thu 9/3

6:51 pm-7:50 pm

Nonstop0h 59m

$237

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Tue 9/8

5:30 am-6:44 am

Nonstop1h 14m

Seattle/Tacoma Intl

Thu 9/10

4:03 pm-5:10 pm

Nonstop1h 07m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice 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.

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?

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 43 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 $139). Flying from Portland to Seattle in March is currently the most expensive (average of $322). 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 July 22, 2026.

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 morning, which can drop the price by up to 20% 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 July 18, 2026.

Travelers seeking maximum savings on their Portland to Seattle flight should consider departing on Thursday mornings 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.

How much does it cost to fly round-trip from Portland to Seattle?

The best insider tips for Portland to Seattle flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Portland to Seattle trip
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on Qatar Airways, PDX and SEA

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 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

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

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 July 22, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andHawaiian Airlines from Portland to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,688 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Alaska Airlines
7.9
Good
12,688 reviews
Alaska Airlines
7.9
Good
12,688 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Delta
7.8
Good
8,477 reviews
Alaska Airlines
7.9
Good
12,688 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Hawaiian Airlines
7.8
Good
2,823 reviews
Alaska Airlines
7.9
Good
12,688 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

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 1h 00m for a nonstop flight. There are 45 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 111 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Portland to Seattle?

    There are many flights that can get you from Portland to Seattle in 1h 11m. Fly via Alaska Airlines or Delta to get the fastest option. The distance from Portland to Seattle is about 129 mi. All flights are typically nonstop.

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

    Cheapflights users have booked flights from Portland to Seattle round-trip from $58. Other airlines that can offer you cheap pricing are Delta, from $79, and Alaska Airlines, from $99. Hawaiian Airlines is currently priced 74% 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 $59 on Delta. Other airlines that offer cheap prices include Alaska Airlines from $69 and Air Excursions from $219 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 (90%), Scandinavian Airlines (89%) or WestJet (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 $1,700, our data shows the cheapest flight currently is $158. When looking at the most popular route, (Portland - Seattle/Tacoma Intl), you can expect to pay $177 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 $139). Flying from Portland to Seattle in March is currently the most expensive (average of $322). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Renton
Lacey
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Centralia
Puyallup
Kent
Ellensburg
Fife
Marysville
Ocean Shores
Lakewood
Lynnwood
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Portland to Seattle

Discover the top 4 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 July 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$58Average$187FlexibilityNo cancel feeOn-time85%
DeltaCheapest$79Average$202FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$99Average$247FlexibilityNo cancel feeOn-time75%
Air ExcursionsCheapest$295Average$558FlexibilityNo cancel feeOn-timeN/A

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