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Cheap flights from Portland to Seattle from $119

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Seattle departing on 11/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:17 am - 7:20 am
PDX
-
SEA
1h 03mnonstop
Alaska Airlines Logo
7:08 am - 8:18 am
SEA
-
PDX
1h 10mnonstop
$172Alaska Airlines
Wed, Sep 2 - Tue, Sep 29
Delta Logo
7:40 pm - 8:46 pm
PDX
-
SEA
1h 06mnonstop
Delta Logo
9:30 am - 10:36 am
SEA
-
PDX
1h 06mnonstop
$177Delta
Wed, Sep 16 - Sat, Sep 26
Delta Logo
5:30 am - 6:37 am
PDX
-
SEA
1h 07mnonstop
Delta Logo
6:55 pm - 8:04 pm
SEA
-
PDX
1h 09mnonstop
$197Delta
Thu, Aug 27 - Sun, Aug 30
Alaska Airlines Logo
9:19 am - 10:21 am
PDX
-
SEA
1h 02mnonstop
Alaska Airlines Logo
11:26 pm - 12:22 am
SEA
-
PDX
0h 56mnonstop
$230Alaska Airlines
Wed, Jul 1 - Wed, Jul 22
Alaska Airlines Logo
6:17 am - 7:20 am
PDX
-
SEA
1h 03mnonstop
Alaska Airlines Logo
8:41 am - 4:50 pm
SEA
-
PDX
8h 09m
1 stop
$231Alaska Airlines
Wed, Sep 2 - Tue, Sep 29
Delta Logo
5:50 pm - 7:05 pm
PDX
-
SEA
1h 15mnonstop
Delta Logo
8:59 pm - 10:02 pm
SEA
-
PDX
1h 03mnonstop
$237Delta
Mon, Jun 8 - Mon, Jun 22
Alaska Airlines Logo
10:37 am - 5:39 pm
PDX
-
SEA
7h 02m
1 stop
Alaska Airlines Logo
8:59 pm - 10:01 pm
SEA
-
PDX
1h 02mnonstop
$240Alaska Airlines
Wed, Sep 16 - Sat, Sep 26
Delta Logo
12:20 pm - 1:30 pm
PDX
-
SEA
1h 10mnonstop
Delta Logo
10:50 pm - 11:56 pm
SEA
-
PDX
1h 06mnonstop
$247Delta
Wed, Aug 26 - Thu, Aug 27
Alaska Airlines Logo
7:06 am - 8:25 am
PDX
-
SEA
1h 19mnonstop
Alaska Airlines Logo
11:57 am - 4:53 pm
SEA
-
PDX
4h 56m
1 stop
$250Alaska Airlines
Sat, Oct 3 - Sat, Oct 10
Alaska Airlines Logo
8:35 pm - 8:32 am
PDX
-
SEA
11h 57m
1 stop
Alaska Airlines Logo
12:22 pm - 1:39 pm
SEA
-
PDX
1h 17mnonstop
$252Alaska Airlines
Wed, Sep 9 - Thu, Sep 10

Alaska Airlines flights from Portland to Seattle

Our best Alaska Airlines deals on Portland to Seattle flight tickets
Alaska Airlines
Sep 2
PDX6:17 amPortland
1h 03m
SEA7:20 amSeattle/Tacoma Intl
Sep 29
SEA7:08 amSeattle/Tacoma Intl
1h 10m
PDX8:18 amPortland
$172
Alaska Airlines
Jul 1
PDX9:19 amPortland
1h 02m
SEA10:21 amSeattle/Tacoma Intl
Jul 22
SEA11:26 pmSeattle/Tacoma Intl
0h 56m
PDX12:22 amPortland
$230
Alaska Airlines
Sep 2
PDX6:17 amPortland
1h 03m
SEA7:20 amSeattle/Tacoma Intl
Sep 29
SEA8:41 amSeattle/Tacoma Intl
8h 09m
1 stop
PDX4:50 pmPortland
$231

Delta flights from Portland to Seattle

Our best Delta deals on Portland to Seattle flight tickets
Delta
Sep 16
PDX7:40 pmPortland
1h 06m
SEA8:46 pmSeattle/Tacoma Intl
Sep 26
SEA9:30 amSeattle/Tacoma Intl
1h 06m
PDX10:36 amPortland
$177
Delta
Aug 27
PDX5:30 amPortland
1h 07m
SEA6:37 amSeattle/Tacoma Intl
Aug 30
SEA6:55 pmSeattle/Tacoma Intl
1h 09m
PDX8:04 pmPortland
$197
Delta
Jun 8
PDX9:30 amPortland
1h 25m
SEA10:55 amSeattle/Tacoma Intl
Jun 22
SEA10:50 pmSeattle/Tacoma Intl
1h 04m
PDX11:54 pmPortland
$237

momondo 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, momondo users made 832,500 searches. Data last updated May 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

Wed 9/2

6:17 am-7:20 am

Nonstop1h 03m

Seattle/Tacoma Intl

Tue 9/29

7:08 am-8:18 am

Nonstop1h 10m

$172

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 9/16

7:40 pm-8:46 pm

Nonstop1h 06m

Seattle/Tacoma Intl

Sat 9/26

9:30 am-10:36 am

Nonstop1h 06m

$177

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Thu 8/27

5:30 am-6:37 am

Nonstop1h 07m

Seattle/Tacoma Intl

Sun 8/30

6:55 pm-8:04 pm

Nonstop1h 09m

$197
Quickest round-trip

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 7/1

9:19 am-10:21 am

Nonstop1h 02m

Seattle/Tacoma Intl

Wed 7/22

11:26 pm-12:22 am

Nonstop0h 56m

$230

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 9/2

6:17 am-7:20 am

Nonstop1h 03m

Seattle/Tacoma Intl

Tue 9/29

8:41 am-4:50 pm

1 stop8h 09m

$231

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Mon 6/8

5:50 pm-7:05 pm

Nonstop1h 15m

Seattle/Tacoma Intl

Mon 6/22

8:59 pm-10:02 pm

Nonstop1h 03m

$237

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 9/16

10:37 am-5:39 pm

1 stop7h 02m

Seattle/Tacoma Intl

Sat 9/26

8:59 pm-10:01 pm

Nonstop1h 02m

$240

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 8/26

12:20 pm-1:30 pm

Nonstop1h 10m

Seattle/Tacoma Intl

Thu 8/27

10:50 pm-11:56 pm

Nonstop1h 06m

$247

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 10/3

7:06 am-8:25 am

Nonstop1h 19m

Seattle/Tacoma Intl

Sat 10/10

11:57 am-4:53 pm

1 stop4h 56m

$250

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 9/9

8:35 pm-8:32 am

1 stop11h 57m

Seattle/Tacoma Intl

Thu 9/10

12:22 pm-1:39 pm

Nonstop1h 17m

$252

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Portland to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Portland and Seattle?

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Portland to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $139. If you don’t want to visit Seattle in January, then you should wait until December to fly from Portland, when ticket prices are also cheap, with an average price of $149.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Portland is on a Thursday. momondo users have found tickets for Thursday departures for as low as $705. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Portland because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $878.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Portland in the morning is the least expensive time of day to depart. momondo users have found prices as low as $745 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $973. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Portland to Seattle/Tacoma Intl flight route?

Fly from Portland to Seattle/Tacoma Intl for the best Portland - Seattle/Tacoma Intl flight prices

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

You are more likely to see cheaper flights to Seattle from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $216 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Portland for as low as $132 on momondo.

What cabin class options are available on Portland to Seattle flights?

There are 4 cabin classes available to choose from on Portland to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Portland to Seattle flight prices changed over time?

As of May 2026, prices for Portland to Seattle flights are approximately 103% more expensive when compared to flights at the same time last year.

When to book flights from Portland to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Seattle (PDX to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Seattle

Best Price Found

$222

Fastest flight time

1h 05m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Portland in the past 72 hours is $222. The best round-trip flight deal from Portland to Seattle found on momondo in the last 72 hours is $445.
The fastest flight from Portland to Seattle takes 1h 05m
Direct flights go from Portland to Seattle every day.
There is 1 airport in Seattle. From Portland there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

Frequently asked questions about flying from Portland to Seattle

  • How far is Portland to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 145.2 mi away from Portland. A reasonable flight in good conditions will take 1h 05m.

  • When did momondo last update prices for flights from Portland Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Portland Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Portland Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Portland Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Portland to Seattle?

  • What is the most popular airline from Portland to Seattle?

Best airlines flying from Portland to Seattle

Compare and see reviews for airlines that fly from Portland to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $79Free CancellationRating
7.9
8,449 reviews
Search Delta flights
Alaska AirlinesPriceFrom $99Free CancellationRating
7.9
12,396 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $108Free CancellationRating
7.8
2,835 reviews
Search Hawaiian Airlines flights
Air ExcursionsPriceFrom $295Free CancellationRating
0.0
Search Air Excursions flights

  • Delta Flights From Portland to Seattle

    Delta is one of the most popular airlines flying from Portland to Seattle, operating 44 flights/week on average for this route. A good Delta flight deal for Portland to Seattle starts from $79 round-trip, up to an average price of $186. Our users have rated Delta at 7.9/10.

  • Alaska Airlines Flights From Portland to Seattle

    $99 is the best Alaska Airlines flight deal from Portland to Seattle found on momondo over the last 72 hours. The average Alaska Airlines ticket price found was closer to $243, however, with flight time and availability significantly affecting the price. Alaska Airlines (7.9/10 from 12,392 user reviews) flies into Seattle from Portland 51 times in an average week so prices can vary.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Redmond
Kent
Puyallup
Lakewood
Tukwila
Marysville
Cle Elum
Federal Way
Fife
Centralia
Westport
Shoreline
Tumwater

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Seattle. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portland to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portland to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Portland to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Portland to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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