$199 Find Cheap Flights from Philadelphia to Seattle - Compare and Save

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

• Earliest: departs at 7:00 am and lands at 1:16 pm
• Latest: departs at 7:35 pm and lands at 1:51 am.

The flight takes about 6h 16m.

Three cabin classes are available on flights from Philadelphia to Seattle:

• Economy Class
• Business Class
• First Class

A nonstop flight from Philadelphia to Seattle takes 6h 16m, covering 2,370 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.

Round-trip flights from Philadelphia to Seattle range from $337 to $524, with an average of $428 over the past 12 months. Anything below $337 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 34% above the $428 route average. Book 9 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $301 round-trip via Denver Intl (DEN), compared to $430 for nonstop.

American Airlines is slightly above the route average for timely arrivals, while Alaska Airlines has a lower on-time arrival rate. On-time arrival rates on Philadelphia to Seattle flights are:

• American Airlines: 84% on time
• Alaska Airlines: 81% on time
• Delta: 79% on time

Overall, flights on this route are punctual 82% of the time on average.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Airbus A321-100/200 family is used most often on this route, operated mainly by American Airlines and Delta. Other aircraft seen on the route include Airbus A321neo variants.

Morning is the busiest departure period on Philadelphia to Seattle flights, with 50% of flights leaving in that window. Evening departures account for 50%, afternoon flights for 0%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $359 to $2,552. That means the highest observed fare was about 7x higher than the lowest one.

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

• American Airlines
• Alaska Airlines
• Delta

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

One-way fares from Philadelphia to Seattle are currently lower than usual. Average one-way flight prices are about $211, which is 21% below the typical average for this route.

Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:

• Fox
• Europcar
• Thrifty
• Budget
• Dollar

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

Morning flights have the fewest delays on this route, while afternoon departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Philadelphia to Seattle route, 18% of flights were delayed in the past 3 months, with delays averaging 2h 33m.

One-stop flights from Philadelphia to Seattle most commonly connect through:

• Denver Intl (DEN) - 36% of one-stop connections
• Chicago O'Hare Intl (ORD) - 33% of one-stop connections
• Chicago Midway (MDW) - 8% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 6% of one-stop connections

Yes. Flexible dates can save you up to 21% on flights from Philadelphia to Seattle. Wednesday is the cheapest departure day at $389 round-trip on average, while Sunday is the most expensive at $487, a difference of $98.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

3 airlines operate flights between Philadelphia and Seattle. The airlines offering nonstop flights on this route include:

• American Airlines
• Alaska Airlines
• Delta

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 7h 09m, compared with 7h 44m via Salt Lake City (SLC) and 7h 45m via Washington, D.C. Dulles Intl (IAD).

Seattle is 3 hours behind Philadelphia (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Seattle are Pike Place Market, Lumen Field and Space Needle. These are among the most viewed places in Seattle on KAYAK.

Among airlines operating Philadelphia to Seattle flights:

• American Airlines: offers extra legroom; offers free seat selection
• Alaska Airlines: 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.

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

• American Airlines: a cabin bag and a checked bag in Economy Class
• Alaska Airlines: a cabin bag and a checked bag in Economy Class
• Delta: a cabin bag and a checked bag in Economy Class

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

If you are searching for a hotel near Seattle-Tacoma-Intl-(SEA), you may want to have a look at the Hampton Inn & Suites Seattle-Airport and La Quinta by Wyndham Seattle Sea-Tac Airport. All of them have a good connection to the airport in case your flight arrives late.

The Regional Rail's Airport Line Service is the most convenient way to get to Philadelphia International Airport from the city center. This service makes stops at all of the main airport terminals, in addition to University City, Center City, and the area close to Temple University. Access is provided to every station that is serviced by the Airport Line.

You may book special help to go through security and reach your gate in advance at PHL airport. The airport has accessible facilities as well as additional assistance for those with a concealed disability. Seattle-Tacoma International Airport (SEA) provides accessible services at the arrival airport such as wheelchairs and adapted bathrooms.

Family bathrooms are conveniently located next to all multi-user toilet facilities and are open for use by any and all customers. These restrooms can be found on the floors of the Main Terminal that are designated for Ticketing and Baggage Claim, as well as on the levels that are designated for Concourses A, B, C, and D, and in both the North and South Satellites. In addition, these restrooms can be found on the levels that are designated for Concourses A, B, C, and D. In the family restrooms of the North Satellite, there are two adult-sized changing tables. You may get step-by-step instructions by using the airport's interactive map.