C$ 316 Find Cheap Flights from Seattle to Philadelphia – Compare and Save

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

• Earliest: departs at 8:24 am and lands at 1:31 pm
• Latest: departs at 11:31 pm and lands at 4:38 am.

The flight takes about 5h 07m.

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

• Economy Class
• First Class

A direct flight from Seattle to Philadelphia takes 5h 07m, covering 6,139 km.

No, a passport is not required for this domestic route, but you will need another form of identification, such as a driver's licence.

Round-trip flights from Seattle to Philadelphia range from C$ 503 to C$ 770, with an average of C$ 617 over the past 12 months. Anything below C$ 503 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 29% above the C$ 617 route average. Book 21 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 428 round-trip via Las Vegas Harry Reid Intl (LAS), compared to C$ 619 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 49–C$ 140 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

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

Morning is the busiest departure period on Seattle to Philadelphia flights, with 50% leaving in that window. Afternoon departures account for 25%, Night flights for 25%, and Evening flights for 0%.

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

• American Airlines
• Alaska Airlines

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 Seattle to Philadelphia are currently lower than usual. Average one-way flight prices are about C$ 342, which is 11% below the typical average for this route.

Philadelphia Airport (PHL) hosts 5 major car rental companies, with daily rates averaging C$ 96 for economy cars. Top options include:

• Payless
• Dollar
• Hertz
• Thrifty
• Alamo

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

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

• Chicago O'Hare Intl (ORD) – 36% of one-stop connections
• Denver Intl (DEN) – 28% of one-stop connections
• Minneapolis St Paul (MSP) – 9% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) – 8% of one-stop connections

Yes. Flexible dates can save you up to 20% on flights from Seattle to Philadelphia. Tuesday is the cheapest departure day at C$ 578 round-trip on average, while Sunday is the most expensive at C$ 716, a difference of C$ 138.

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

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

• Alaska Airlines
• American Airlines
• Delta

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 7h 47m, compared with 7h 47m via Washington, D.C. Dulles Intl (IAD) and 7h 54m via Salt Lake City (SLC).

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

Some of the most popular sights in Philadelphia are Philadelphia Stadium, Philadelphia Convention Center, and Mutter Museum. These are among the most viewed places in Philadelphia on KAYAK.

Among airlines operating Seattle to Philadelphia flights:

• American Airlines: offers extra legroom; offers free seat selection
• Alaska Airlines: offers extra legroom; offers free seat selection
• Delta: 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 carry-on bag and a checked bag in Economy Class
• Alaska Airlines: a carry-on bag and a checked bag in Economy Class
• Delta: a carry-on bag and a checked bag in First Class

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