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$74+ 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 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SEA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Seattle/Tacoma Intl are usually found in January or September, booked 55 days in advance, depart on a Thursday or Friday 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 September 11, 2025.

Round-trip from

$103
(lastminute.com)

One-way from

$74
(Cheapflightsfares)

Popular in

March

Cheapest in

January

Average price

$176

Good round-trip deal

$481 or less

Good one-way deal

$148 or less
From Portland to Seattle/Tacoma Intl
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One-way flight from Portland to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 6% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Portland to Seattle/Tacoma Intl.
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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 September 11, 2025.

This lastminute.com deal was found by Cheapflights users on 9/10. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:20 amPDX - SEA
Nonstop1h 06mAlaska Airlines
Sat 11/18:00 amSEA - PDX
Nonstop1h 06mAlaska Airlines
Deal found 9/10$103
This Vliegwinkel deal was found by Cheapflights users on 9/10. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:38 pmPDX - SEA
Nonstop0h 57mHawaiian Airlines
Sat 12/139:54 amSEA - PDX
Nonstop0h 56mHawaiian Airlines
Deal found 9/10$116
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/81:25 pmPDX - SEA
Nonstop1h 10mAlaska Airlines
Wed 10/1511:20 amSEA - PDX
Nonstop1h 05mAlaska Airlines
Deal found 9/10$117
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/222:30 pmPDX - SEA
Nonstop0h 59mAlaska Airlines
Wed 10/298:00 amSEA - PDX
Nonstop1h 06mAlaska Airlines
Deal found 9/11$137
This Delta deal was found by Cheapflights users on 9/11. 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.
Sat 10/1111:10 amPDX - SEA
Nonstop1h 13mDelta
Mon 10/139:29 amSEA - PDX
Nonstop1h 01mDelta
Deal found 9/11$147
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 10/710:00 pmPDX - SEA
Nonstop1h 04mAlaska Airlines
Tue 10/1412:42 pmSEA - PDX
Nonstop1h 08mAlaska Airlines
Deal found 9/10$157
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Sun 10/267:30 pmPDX - SEA
1 stop17h 56mFrontier
Sun 11/27:17 pmSEA - PDX
1 stop19h 14mFrontier
Deal found 9/11$166
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/24:46 pmPDX - SEA
Nonstop1h 04mAlaska Airlines
Sat 10/45:21 amSEA - PDX
Nonstop0h 59mAlaska Airlines
Deal found 9/10$167
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 10/216:00 pmPDX - SEA
Nonstop0h 54mAlaska Airlines
Tue 10/219:40 pmSEA - PDX
Nonstop1h 05mAlaska Airlines
Deal found 9/10$171

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 September 11, 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

Wed 10/8

7:59 pm-9:08 pm

Nonstop1h 09m

Seattle/Tacoma Intl

Wed 10/15

7:25 am-8:36 am

Nonstop1h 11m

$117

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 10/25

2:30 pm-3:23 pm

Nonstop0h 53m

Seattle/Tacoma Intl

Sat 11/1

8:00 am-9:06 am

Nonstop1h 06m

$117

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Tue 10/7

7:59 pm-9:08 pm

Nonstop1h 09m

Seattle/Tacoma Intl

Tue 10/14

9:29 am-10:30 am

Nonstop1h 01m

$117

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 10/22

5:25 pm-6:36 pm

Nonstop1h 11m

Seattle/Tacoma Intl

Wed 10/29

10:55 pm-11:53 pm

Nonstop0h 58m

$117

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Tue 3/3

9:10 pm-10:21 am

1 stop13h 11m

Seattle/Tacoma Intl

Wed 3/4

12:50 pm-1:46 pm

Nonstop0h 56m

$135

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 11/22

5:26 pm-6:41 pm

Nonstop1h 15m

Seattle/Tacoma Intl

Sun 11/23

7:19 am-8:35 am

Nonstop1h 16m

$147

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 10/11

11:10 am-12:23 pm

Nonstop1h 13m

Seattle/Tacoma Intl

Mon 10/13

9:29 am-10:30 am

Nonstop1h 01m

$147

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 10/11

1:30 pm-2:41 pm

Nonstop1h 11m

Seattle/Tacoma Intl

Mon 10/27

9:29 am-10:30 am

Nonstop1h 01m

$147

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Tue 11/4

1:30 pm-2:41 pm

Nonstop1h 11m

Seattle/Tacoma Intl

Thu 11/13

9:35 pm-10:41 pm

Nonstop1h 06m

$147

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Tue 3/3

1:38 pm-2:42 pm

Nonstop1h 04m

Seattle/Tacoma Intl

Wed 3/4

7:30 am-8:37 am

Nonstop1h 07m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 22 results
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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 15 minutes off-peak, longer during rush hours. Use Express Lanes if eligible for faster screening.

Read more about PDXby Brandon Schultz
SEA

Use the Link light rail from SEA to downtown Seattle. It's inexpensive, runs every 10 minutes, and takes less than 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 August 29, 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 55 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 June is currently the most expensive (average of $388). 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 September 11, 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 35% 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 September 7, 2025.

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

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 September 11, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian 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
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

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 54m for a nonstop flight. There are 61 flights from Portland to Seattle per day from 3 airlines.

  • How popular is this Portland to Seattle flight route?

    The Portland to Seattle/Tacoma Intl flight path was viewed by 242 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 53m. Fly via Delta or Alaska Airlines 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 $103. Other airlines that can offer you cheap pricing are Delta, from $108, and Alaska Airlines, from $128. Hawaiian Airlines is currently priced 51% below the average price you’ll pay for this route.

  • 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 WestJet (89%), Delta (88%) or Aeromexico (87%) 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 $913, 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 $112 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 June is currently the most expensive (average of $388). 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
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Lacey
Renton
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$103Average$212FlexibilityNo cancel feeOn-time85%
DeltaCheapest$108Average$201FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$128Average$224FlexibilityNo cancel feeOn-time75%

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