What is the cheapest airline that flies from Portland to Seattle/Tacoma Intl?

Alaska Airlines and Delta are the most popular carriers operating from Portland to Seattle/Tacoma Intl

How many flights depart from Portland to Seattle on average per day?

35 flights are operational daily from Portland to Seattle as of October 2026. The most popular departure time for this route is 9:00, with 49% of flights per day taking off at midday.

How many flights depart from Portland to Seattle on average per week?

248 flights are operational weekly from Portland to Seattle as of October 2026. The most popular departure day for this route is Tue, with 23% of flights per week taking off on this day.

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 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 stopovers 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 licence, 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.

R2 164 Cheap Flights from Portland to Seattle in 2026/27

Find the cheapest flights from Portland to Seattle

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

6:25 - 7:28PDX Portland-SEA Seattle/Tacoma Intl

1h 03mdirect

10:11 - 20:49SEA Seattle/Tacoma Intl-PDX Portland

10h 38m1 stop Oakland

R3 262Alaska Airlines

Thu, Jan 28 - Thu, Jan 28

5:05 - 6:00PDX Portland-SEA Seattle/Tacoma Intl

0h 55mdirect

8:33 - 20:30SEA Seattle/Tacoma Intl-PDX Portland

11h 57m1 stop Sacramento Intl

R3 393Alaska Airlines

Sat, Nov 14 - Sat, Nov 14

19:59 - 9:09PDX Portland-SEA Seattle/Tacoma Intl

13h 10m1 stop Oakland

12:13 - 13:24SEA Seattle/Tacoma Intl-PDX Portland

1h 11mdirect

R3 508Alaska Airlines

Fri, Oct 30 - Sat, Oct 31

14:15 - 15:29PDX Portland-SEA Seattle/Tacoma Intl

1h 14mdirect

9:40 - 10:52SEA Seattle/Tacoma Intl-PDX Portland

1h 12mdirect

R3 557Delta

Sat, Dec 5 - Sat, Dec 12

6:09 - 7:09PDX Portland-SEA Seattle/Tacoma Intl

1h 00mdirect

9:10 - 20:50SEA Seattle/Tacoma Intl-PDX Portland

11h 40m1 stop Oakland

R3 672Alaska Airlines

Tue, Oct 27 - Tue, Oct 27

8:09 - 9:10PDX Portland-SEA Seattle/Tacoma Intl

1h 01mdirect

17:58 - 18:55SEA Seattle/Tacoma Intl-PDX Portland

0h 57mdirect

R3 721Alaska Airlines

Fri, Oct 30 - Sat, Oct 31

17:32 - 9:08PDX Portland-SEA Seattle/Tacoma Intl

15h 36m1 stop Oakland

11:20 - 12:22SEA Seattle/Tacoma Intl-PDX Portland

1h 02mdirect

R3 803Alaska Airlines

Sat, Feb 20 - Sun, Feb 21

5:06 - 6:00PDX Portland-SEA Seattle/Tacoma Intl

0h 54mdirect

14:25 - 15:21SEA Seattle/Tacoma Intl-PDX Portland

0h 56mdirect

R3 885Alaska Airlines

Fri, Oct 30 - Mon, Dec 7

19:59 - 9:09PDX Portland-SEA Seattle/Tacoma Intl

13h 10m1 stop Oakland

12:13 - 13:24SEA Seattle/Tacoma Intl-PDX Portland

1h 11mdirect

R3 918Alaska Airlines

Fri, Oct 30 - Sat, Oct 31

14:31 - 20:04PDX Portland-SEA Seattle/Tacoma Intl

5h 33m1 stop San Francisco

10:20 - 11:24SEA Seattle/Tacoma Intl-PDX Portland

1h 04mdirect

R3 934Alaska Airlines

Sat, Dec 5 - Sat, Dec 12

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Alaska Airlines flights from Portland to Seattle

Our best Alaska Airlines deals on Portland to Seattle flight tickets

Alaska Airlines

Jan 28

PDX6:25Portland

1h 03m

SEA7:28Seattle/Tacoma Intl

Jan 28

SEA10:11Seattle/Tacoma Intl

10h 38m

1 stop

PDX20:49Portland

R3 262

Alaska Airlines

Nov 14

PDX5:05Portland

0h 55m

SEA6:00Seattle/Tacoma Intl

Nov 14

SEA8:33Seattle/Tacoma Intl

11h 57m

1 stop

PDX20:30Portland

R3 393

Alaska Airlines

Oct 30

PDX19:59Portland

13h 10m

1 stop

SEA9:09Seattle/Tacoma Intl

Oct 31

SEA12:13Seattle/Tacoma Intl

1h 11m

PDX13:24Portland

R3 508

Delta flights from Portland to Seattle

Our best Delta deals on Portland to Seattle flight tickets

Delta

Dec 5

PDX14:15Portland

1h 14m

SEA15:29Seattle/Tacoma Intl

Dec 12

SEA9:40Seattle/Tacoma Intl

1h 12m

PDX10:52Portland

R3 557

Delta

Oct 31

PDX17:49Portland

1h 16m

SEA19:05Seattle/Tacoma Intl

Nov 1

SEA13:45Seattle/Tacoma Intl

1h 06m

PDX14:51Portland

R4 049

Delta

Oct 31

PDX17:49Portland

1h 16m

SEA19:05Seattle/Tacoma Intl

Nov 1

SEA13:45Seattle/Tacoma Intl

1h 06m

PDX14:51Portland

R4 065

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Thu 28/1

6:25-7:28

Nonstop1h 03m

Seattle/Tacoma Intl

Thu 28/1

10:11-20:49

1 stop10h 38m

R3 262

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Sat 14/11

5:05-6:00

Nonstop0h 55m

Seattle/Tacoma Intl

Sat 14/11

8:33-20:30

1 stop11h 57m

R3 393

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Fri 30/10

19:59-9:09

1 stop13h 10m

Seattle/Tacoma Intl

Sat 31/10

12:13-13:24

Nonstop1h 11m

R3 508

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Sat 5/12

14:15-15:29

Nonstop1h 14m

Seattle/Tacoma Intl

Sat 12/12

9:40-10:52

Nonstop1h 12m

R3 557

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Tue 27/10

6:09-7:09

Nonstop1h 00m

Seattle/Tacoma Intl

Tue 27/10

9:10-20:50

1 stop11h 40m

R3 672

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Fri 30/10

8:09-9:10

Nonstop1h 01m

Seattle/Tacoma Intl

Sat 31/10

17:58-18:55

Nonstop0h 57m

R3 721

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Sat 20/2

17:32-9:08

1 stop15h 36m

Seattle/Tacoma Intl

Sun 21/2

11:20-12:22

Nonstop1h 02m

R3 803

Fastest return journey

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Fri 30/10

5:06-6:00

Nonstop0h 54m

Seattle/Tacoma Intl

Mon 7/12

14:25-15:21

Nonstop0h 56m

R3 885

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Fri 30/10

19:59-9:09

1 stop13h 10m

Seattle/Tacoma Intl

Sat 31/10

12:13-13:24

Nonstop1h 11m

R3 918

PortlandSeattle

PDX Portland - SEA Seattle/Tacoma Intl

PDXSEA

Portland

Sat 5/12

14:31-20:04

1 stop5h 33m

Seattle/Tacoma Intl

Sat 12/12

10:20-11:24

Nonstop1h 04m

R3 934

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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

Prices are currently low for flights on this route.

Typical prices usually range from R3 557 to R7 000.
The lowest price recently found on this route was R3 262.

What is the cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from Portland is in January. Flight prices, which tend to average around R2 279, are often lower during this time because this is during the off-season. If you aren’t able to travel to Seattle during the month of January, then flying in December is also cheap. Prices for this month can be found on momondo for an average of R2 442.

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 R3 855 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Portland for as low as R2 738 on momondo.

How have Portland to Seattle flight prices changed over time?

As of October 2026, prices for Portland to Seattle flights are approximately 10% 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 return 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	R2 164
Direct flights	Every day
Airports in Seattle	1 airport

The best one-way flight to Seattle from Portland in the past 72 hours is R2 164. The best return flight deal from Portland to Seattle found on momondo in the last 72 hours is R3 262.

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?
The straight-line distance from Portland to Seattle/Tacoma Intl is 233,6 km.
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 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 stopovers 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 licence, 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Portland to Seattle is Boeing 787-10 Dreamliner (14,20% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (12,85%), Boeing 787-8 Dreamliner (9,06%), and Boeing 737 MAX 8 (8,57%).

Lynnwood

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Seattle. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Portland to Seattle flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Seattle.

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

Yes momondo offers price alerts on flights to Seattle from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.