Cheap flights from Portland to Seattle from $73
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 8/16. 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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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 $159. 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 $172.
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 $759. 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 $934.
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 $625 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $1,081. 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 $211 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 $148 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.
What is the cheapest airline that flies from Portland to Seattle/Tacoma Intl?
Alaska Airlines, Hawaiian Airlines, and Southwest are the most popular carriers operating from Portland to Seattle/Tacoma Intl
What airlines fly to Seattle?
Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Seattle from Portland according to our data. Alaska Airlines is the first choice among our users, with 69% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
How many flights depart from Portland to Seattle on average per day?
72 flights are operational daily from Portland to Seattle as of July 2025. The most popular departure time for this route is 11:00AM, with 44% of flights per day taking off at noon.
How many flights depart from Portland to Seattle on average per week?
The number of flights available between Portland and Seattle is 507 per week as of July 2025. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.
When to book flights from Portland to Seattle
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
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 53m. 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 bus 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 $117, or consider a train from Portland to Seattle starting at $58. 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 53m.
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?
As of July 2025, there are 3 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Portland to Seattle is Boeing 737-800 Passenger/BBJ2 (winglets), representing 16.12% of all bookings. The subsequent popular models are Embraer 175 at 15.87%, Boeing 737 MAX 9 at 11.12%, and Boeing 737-900 Passenger/BBJ3 (winglets) at 9.71%.
What is the most popular airline from Portland to Seattle?
momondo data reveals that the most frequently booked airline on the route from Portland to Seattle is Alaska Airlines, representing 69% of all bookings. The subsequent popular airlines are Delta at 23% and Hawaiian Airlines at 8%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $103 | Free Cancellation | Rating 7.8 2,545 reviews | |||
| PriceFrom $116 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $117 | Free Cancellation | Rating 8.0 7,983 reviews |
Alaska Airlines Flights From Portland to Seattle
Alaska Airlines is one of the most popular airlines flying from Portland to Seattle, operating 77 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 $216. 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 $208, however, with flight time and availability significantly affecting the price. Delta (8.0/10 from 7,982 user reviews) flies into Seattle from Portland 31 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 locationsWhy 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.