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Cheap flights from Portland to Seattle from $76

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 9/10. 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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Find the cheapest flights from Portland to Seattle (PDX-SEA)

Cheap round-trip flights

Hawaiian Airlines Logo
1:25 pm - 2:35 pmPDX-SEA
1h 10mnonstop
Hawaiian Airlines Logo
8:00 am - 9:00 amSEA-PDX
1h 00mnonstop
$109Hawaiian Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 11
Hawaiian Airlines Logo
1:24 pm - 2:26 pmPDX-SEA
1h 02mnonstop
Hawaiian Airlines Logo
11:20 am - 12:27 pmSEA-PDX
1h 07mnonstop
$110Hawaiian Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
Delta Logo
7:31 pm - 8:50 pmPDX-SEA
1h 19mnonstop
Delta Logo
9:25 am - 10:27 amSEA-PDX
1h 02mnonstop
$117Delta
Find Deal
Wed, Sep 17 - Sat, Sep 20
Hawaiian Airlines Logo
7:31 pm - 8:35 pmPDX-SEA
1h 04mnonstop
Hawaiian Airlines Logo
5:20 am - 6:17 amSEA-PDX
0h 57mnonstop
$140Hawaiian Airlines
Find Deal
Fri, Sep 26 - Sat, Sep 27
Delta Logo
7:31 pm - 8:50 pmPDX-SEA
1h 19mnonstop
Delta Logo
10:55 pm - 11:52 pmSEA-PDX
0h 57mnonstop
$147Delta
Find Deal
Thu, Sep 18 - Tue, Sep 23
Alaska Airlines Logo
7:00 am - 8:10 amPDX-SEA
1h 10mnonstop
Alaska Airlines Logo
11:20 am - 12:27 pmSEA-PDX
1h 07mnonstop
$151Alaska Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 20
Alaska Airlines Logo
1:24 pm - 2:26 pmPDX-SEA
1h 02mnonstop
Alaska Airlines Logo
9:59 am - 4:50 pmSEA-PDX
6h 51m1 stop
$160Alaska Airlines
Find Deal
Wed, Sep 17 - Sat, Sep 20
Frontier Logo
7:15 am - 10:59 pmPDX-SEA
15h 44m1 stop
Frontier Logo
7:00 am - 10:34 pmSEA-PDX
15h 34m1 stop
$178Frontier
Find Deal
Tue, Sep 16 - Tue, Sep 23
Frontier Logo
6:05 am - 12:30 amPDX-SEA
18h 25m1 stop
Frontier Logo
9:39 pm - 12:08 pmSEA-PDX
14h 29m1 stop
$259Frontier
Find Deal
Thu, Sep 18 - Sat, Oct 4
Logo
9:55 pm - 10:21 amPDX-SEA
12h 26m1 stop
Logo
8:15 pm - 9:27 amSEA-PDX
13h 12m1 stop
$280
Find Deal
Fri, Oct 3 - Fri, Oct 10

Alaska Airlines flights from Portland to Seattle

Our best Alaska Airlines deals on Portland to Seattle flight tickets
Alaska Airlines
Sep 20
PDX7:00 amPortland
1h 10m
SEA8:10 amSeattle/Tacoma Intl
Sep 20
SEA11:20 amSeattle/Tacoma Intl
1h 07m
PDX12:27 pmPortland
$151
Find similar
Alaska Airlines
Sep 17
PDX1:24 pmPortland
1h 02m
SEA2:26 pmSeattle/Tacoma Intl
Sep 20
SEA9:59 amSeattle/Tacoma Intl
6h 51m
1 stop
PDX4:50 pmPortland
$160
Find similar
Alaska Airlines
Nov 18
PDX1:38 pmPortland
1h 08m
SEA2:46 pmSeattle/Tacoma Intl
Jan 20
SEA5:30 amSeattle/Tacoma Intl
0h 48m
PDX6:18 amPortland
$167
Find similar

Hawaiian Airlines flights from Portland to Seattle

Our best Hawaiian Airlines deals on Portland to Seattle flight tickets
Hawaiian Airlines
Oct 4
PDX1:25 pmPortland
1h 10m
SEA2:35 pmSeattle/Tacoma Intl
Oct 11
SEA8:00 amSeattle/Tacoma Intl
1h 00m
PDX9:00 amPortland
$109
Find similar
Hawaiian Airlines
Sep 20
PDX1:24 pmPortland
1h 02m
SEA2:26 pmSeattle/Tacoma Intl
Sep 27
SEA11:20 amSeattle/Tacoma Intl
1h 07m
PDX12:27 pmPortland
$110
Find similar
Hawaiian Airlines
Sep 26
PDX7:31 pmPortland
1h 04m
SEA8:35 pmSeattle/Tacoma Intl
Sep 27
SEA5:20 amSeattle/Tacoma Intl
0h 57m
PDX6:17 amPortland
$140
Find similar

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 August 21, 2025.
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

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 10/4

1:25 pm-2:35 pm

Nonstop1h 10m

Seattle/Tacoma Intl

Sat 10/11

8:00 am-9:00 am

Nonstop1h 00m

$109

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 9/20

1:24 pm-2:26 pm

Nonstop1h 02m

Seattle/Tacoma Intl

Sat 9/27

11:20 am-12:27 pm

Nonstop1h 07m

$110

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 9/17

7:31 pm-8:50 pm

Nonstop1h 19m

Seattle/Tacoma Intl

Sat 9/20

9:25 am-10:27 am

Nonstop1h 02m

$117

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Fri 9/26

7:31 pm-8:35 pm

Nonstop1h 04m

Seattle/Tacoma Intl

Sat 9/27

5:20 am-6:17 am

Nonstop0h 57m

$140

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Thu 9/18

7:31 pm-8:50 pm

Nonstop1h 19m

Seattle/Tacoma Intl

Tue 9/23

10:55 pm-11:52 pm

Nonstop0h 57m

$147

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Sat 9/20

7:00 am-8:10 am

Nonstop1h 10m

Seattle/Tacoma Intl

Sat 9/20

11:20 am-12:27 pm

Nonstop1h 07m

$151

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Wed 9/17

1:24 pm-2:26 pm

Nonstop1h 02m

Seattle/Tacoma Intl

Sat 9/20

9:59 am-4:50 pm

1 stop6h 51m

$160

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Tue 9/16

7:15 am-10:59 pm

1 stop15h 44m

Seattle/Tacoma Intl

Tue 9/23

7:00 am-10:34 pm

1 stop15h 34m

$178

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Thu 9/18

6:05 am-12:30 am

1 stop18h 25m

Seattle/Tacoma Intl

Sat 10/4

9:39 pm-12:08 pm

1 stop14h 29m

$259

PortlandSeattle

PDX - SEA

PDXSEA

Portland

Fri 10/3

9:55 pm-10:21 am

1 stop12h 26m

Seattle/Tacoma Intl

Fri 10/10

8:15 pm-9:27 am

1 stop13h 12m

$280

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 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 $159. If you don’t want to visit Seattle in January, then you should wait until September to fly from Portland, when ticket prices are also cheap, with an average price of $167.

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 $768. 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 $914.

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

Flying to Seattle from Portland in the evening is the least expensive time of day to depart. momondo users have found prices as low as $686 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $1,076. 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 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 $209 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 $133 on momondo.

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

There are 4 cabin classes available to choose from on Portland to Seattle/Tacoma Intl 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 August 2025, prices for Portland to Seattle flights are approximately 19% 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

$193

Fastest flight time

0h 57m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Portland in the past 72 hours is $193. The best round-trip flight deal from Portland to Seattle found on momondo in the last 72 hours is $524.
The fastest flight from Portland to Seattle takes 0h 57m
Direct flights go from Portland to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

  • Is flying the fastest way to get from Portland to Seattle?

    Based on just travel duration our users have found a flight from Portland to Seattle to be the fastest option to their destination at just 0h 58m. If travel time is less of a concern you may want to look into booking some alternative forms of transportation like a train from Portland to Seattle or a bus from Portland to Seattle.

  • Is flying the cheapest way to get from Portland to Seattle?

    A train from Portland to Seattle is currently going to be the least expensive option currently available. You can also find deals for a flight from Portland to Seattle starting at $109, or consider a bus from Portland to Seattle starting at $65. Both of these alternative options are worth considering when looking to reach your destination.

  • 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 0h 58m.

  • 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
Hawaiian AirlinesPriceFrom $103Free CancellationRating
7.8
2,672 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $116Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $117Free CancellationRating
7.9
7,981 reviews
Search Delta flights

  • Alaska Airlines Flights From Portland to Seattle

    Alaska Airlines is one of the most popular airlines flying from Portland to Seattle, operating 48 flights/week on average for this route. A good Alaska Airlines flight deal for Portland to Seattle starts from $116 round-trip, up to an average price of $218. Our users have rated Alaska Airlines at 8.0/10.

  • Delta Flights From Portland to Seattle

    $117 is the best Delta flight deal from Portland to Seattle found on momondo over the last 72 hours. The average Delta ticket price found was closer to $199, however, with flight time and availability significantly affecting the price. Delta (7.9/10 from 7,981 user reviews) flies into Seattle from Portland 43 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
Leavenworth
Tacoma
SeaTac
Ocean Shores
Olympia
Renton
Kent
Lynnwood
Federal Way
Marysville
Puyallup
Tukwila
Kirkland
Lakewood
Centralia
Cle Elum
Shoreline
Fife
Redmond
Westport

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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