£66 Find Cheap Flights from Portland to Seattle – Compare and Save

Among airlines operating Portland to Seattle flights:

• Alaska Airlines: offers extra legroom; offers free seat selection
• Delta: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between Portland and Seattle. The airlines offering direct flights on this route include:

• Alaska Airlines
• Delta

Flights from Portland to Seattle usually depart from Portland (PDX) and arrive at Seattle/Tacoma Intl (SEA).

Here are some options for this route, based on selected ticket types and cabin classes:

• Alaska Airlines: a cabin bag and a checked bag in Economy class
• Delta: a cabin bag and a checked bag in Economy class
• JetBlue: a cabin bag in Economy class class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £26–£52 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Boeing 737-800 Passenger/BBJ2 (winglets) family is used most often on this route, operated mainly by Alaska Airlines. Other aircraft seen on the route include Boeing 787-10 Dreamliner variants.

Yes. Being flexible with your travel dates can save you up to 45% on the Portland to Seattle route. Tuesday is the cheapest departure day at £102 return on average, while Monday is the most expensive at £183, a difference of £81. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Morning is the busiest departure period on Portland to Seattle flights, with 53% leaving in that window. Afternoon departures account for 21%, Evening flights for 21%, and Night flights for 5%.

Some of the most popular sights in Seattle are Pier 66, The Westin Seattle, and Seattle Center. These are among the most viewed places in Seattle on KAYAK.

These are the earliest and latest flight times available from Portland to Seattle:

• Earliest: departs at 05:00 and lands at 06:07
• Latest: departs at 21:59 and lands at 23:06.

The flight takes about 1h 07m.

A direct flight from Portland to Seattle takes 1h 07m, covering 129 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £87 to £568. That means the highest observed fare was about 7x higher than the lowest one.

One-way fares from Portland to Seattle are currently lower than usual. Average one-way flight prices are about £90, which is 37% below the typical average for this route.

Based on prices from the last 5 days, flying between Portland and Seattle is around £87 return, with a flight time of about 1h 10m. Taking the train is much cheaper at around £43, with a trip time of about 3h 07m. The bus is similarly priced at around £40 and takes about 4h 05m. Compared to flying, recent train and bus fares are roughly 53% lower. However, those options take about 2+ hours longer each way.

Seattle/Tacoma Intl Airport (SEA) hosts 5 major car hire companies, with daily rates starting from around £3 for economy cars. Top options include:
• Fox
• Europcar
• Thrifty
• Budget
• Dollar

Return flights from Portland to Seattle range from £103 to £224, with an average of £165 over the past 12 months. Anything below £103 counts as a good deal.

Three airlines offer in-flight Wi-Fi on Portland to Seattle flights:

• • Alaska Airlines
• • Delta
• • JetBlue