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Cheap flights from Portland to Seattle from $56

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 5/6. 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

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Portland to Seattle.
7:01 pm - 11:35 amPDX-SEA
16h 34m1 stop
8:56 pm - 1:37 pmSEA-PDX
16h 41m1 stop
$122Spirit Airlines
Find Deal
Tue, Apr 22 - Thu, May 1
5:40 pm - 2:25 pmPDX-SEA
20h 45m1 stop
6:00 am - 4:45 pmSEA-PDX
10h 45m1 stop
$123Spirit Airlines
Find Deal
Mon, May 12 - Wed, May 28
9:30 am - 10:31 amPDX-SEA
1h 01mnonstop
12:58 pm - 1:57 pmSEA-PDX
0h 59mnonstop
$131Alaska Airlines
Find Deal
Wed, Jun 4 - Wed, Jun 4
7:01 pm - 2:25 pmPDX-SEA
19h 24m1 stop
9:00 am - 9:56 amSEA-PDX
0h 56mnonstop
Tue, May 6 - Tue, May 13
7:23 am - 8:24 amPDX-SEA
1h 01mnonstop
7:20 am - 8:28 amSEA-PDX
1h 08mnonstop
$137Delta
Find Deal
Tue, Apr 22 - Tue, Apr 29
10:35 am - 11:34 amPDX-SEA
0h 59mnonstop
10:00 am - 10:52 amSEA-PDX
0h 52mnonstop
$141Hawaiian Airlines
Find Deal
Thu, May 1 - Tue, May 13
10:00 pm - 10:54 pmPDX-SEA
0h 54mnonstop
6:30 am - 7:18 amSEA-PDX
0h 48mnonstop
$142Hawaiian Airlines
Find Deal
Mon, May 12 - Wed, May 28
10:00 pm - 10:54 pmPDX-SEA
0h 54mnonstop
6:30 am - 7:18 amSEA-PDX
0h 48mnonstop
Mon, May 12 - Wed, May 28
7:23 am - 8:24 amPDX-SEA
1h 01mnonstop
7:20 am - 8:28 amSEA-PDX
1h 08mnonstop
$147Delta
Find Deal
Tue, Apr 22 - Thu, May 1
2:30 pm - 3:30 pmPDX-SEA
1h 00mnonstop
5:30 am - 6:25 amSEA-PDX
0h 55mnonstop
$157Alaska Airlines
Find Deal
Fri, Apr 25 - Sun, Apr 27

Spirit Airlines flights from Portland to Seattle

Our best Spirit Airlines deals on Portland to Seattle flight tickets
Spirit Airlines
Apr 22
PDX7:01 pmPortland
16h 34m
1 stop
SEA11:35 amSeattle/Tacoma Intl
May 1
SEA8:56 pmSeattle/Tacoma Intl
16h 41m
1 stop
PDX1:37 pmPortland
Spirit Airlines
May 12
PDX5:40 pmPortland
20h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
May 28
SEA6:00 amSeattle/Tacoma Intl
10h 45m
1 stop
PDX4:45 pmPortland
Spirit Airlines
Apr 23
PDX7:01 pmPortland
24h 50m
1 stop
SEA7:51 pmSeattle/Tacoma Intl
Apr 30
SEA12:30 pmSeattle/Tacoma Intl
21h 27m
1 stop
PDX9:57 amPortland

Delta flights from Portland to Seattle

Our best Delta deals on Portland to Seattle flight tickets
Delta
Apr 22
PDX7:23 amPortland
1h 01m
SEA8:24 amSeattle/Tacoma Intl
Apr 29
SEA7:20 amSeattle/Tacoma Intl
1h 08m
PDX8:28 amPortland
Delta
Apr 22
PDX7:23 amPortland
1h 01m
SEA8:24 amSeattle/Tacoma Intl
May 1
SEA7:20 amSeattle/Tacoma Intl
1h 08m
PDX8:28 amPortland
Delta
Jun 7
PDX6:40 amPortland
1h 08m
SEA7:48 amSeattle/Tacoma Intl
Jun 22
SEA7:55 pmSeattle/Tacoma Intl
1h 05m
PDX9:00 pmPortland

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, August 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 $157. If you don’t want to visit Seattle in August, then you should wait until January to fly from Portland, when ticket prices are also cheap, with an average price of $159.

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 Friday. momondo users have found tickets for Friday departures for as low as $728. 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 $971.

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 $577 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $1,121. 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 7 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $204 when searching 7 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 $141 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 March 2025, prices for Portland to Seattle flights are approximately 14% cheaper 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

$56

Fastest flight time

0h 54m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in Seattle

1 airport
The best one-way flight to Seattle from Portland in the past 72 hours is $56. The best round-trip flight deal from Portland to Seattle found on momondo in the last 72 hours is $122.
The fastest flight from Portland to Seattle takes 0h 54m
Direct flights go from Portland to Seattle on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: Delta, Alaska Airlines and Hawaiian Airlines.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • 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 54m.

  • 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
7.9
2,336 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $116Free CancellationRating
8.0
9,798 reviews
Search Alaska Airlines flights
DeltaPriceFrom $116Free CancellationRating
8.0
7,895 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 35 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 $209. Our users have rated Alaska Airlines at 8.0/10.

  • Delta Flights From Portland to Seattle

    $116 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 $202, however, with flight time and availability significantly affecting the price. Delta (8.0/10 from 7,895 user reviews) flies into Seattle from Portland 22 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
Kent
Renton
Federal Way
Tukwila
Puyallup
Kirkland
Lakewood
Fife
Lynnwood
Shoreline
Marysville
Centralia
Redmond
Cle Elum
Lacey

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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