$226 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.

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

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A nonstop flight from Seattle to Philadelphia takes 5h 07m, 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 Seattle to Philadelphia range from $359 to $551, with an average of $441 over the past 12 months. Anything below $359 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 29% above the $441 route average. Book 21 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $306 round-trip via Las Vegas Harry Reid Intl (LAS), compared to $443 for nonstop.

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 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% of flights leaving in that window. Afternoon departures account for 25%, night flights for 25%, and evening 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 $384 to $1,902. That means the highest observed fare was about 5x higher than the lowest one.

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 $230, which is 16% below the typical average for this route.

Philadelphia Airport (PHL) hosts 5 major car rental companies, with daily rates averaging $69 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 $413 round-trip on average, while Sunday is the most expensive at $512, a difference of $99.

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 Seattle and Philadelphia. The airlines offering nonstop 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 Convention Center, Rittenhouse Square and Philadelphia Stadium. 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 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 First Class

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

Minute Suites provides private suites you can rent for an hour or two to work, relax, or take a nap after your flight. Each suite has a bed, blankets, pillows, free Wi-Fi, a phone, desk, and HDTV. The facility is located inside security on the terminal A-B link. If you are staying overnight at the airport, book your stay at the Philadelphia Airport Marriott. You can get to the hotel by taking the Sky Bridge from terminal B or the free shuttle that runs every 20 minutes from each terminal.

PHL is served by the SEPTA trains and the SEPTA Regional Airport Line provides services from PHL to downtown Philadelphia. You can also take these trains to get to Amtrack connections. SEPTA also runs buses from PHL and routes 37, 108, and 115 provide regular service to downtown Philadelphia. You can also take taxis or shared rides from the ground transportation area of each terminal. Taxis operating from PHL are metered but have a minimum $10 charge for all destinations.

SEA has provided private nursing spots for breastfeeding parents dubbed the Mothers Room. These rooms offer comfortable seating, rocking chairs, adjustable lighting, baby changing tables, and more. You’ll find the Mothers Room around the kids’ play area and there is also one in the USO lounge. SEA also provides nursing suites with the same facilities available around the S Gate mezzanine level and gates C10, N2, A9, D10, and D23. SEA has a kids’ play area between the central terminal and A Gates for the older kids.

SEA is ADA-compliant, and passengers with limited mobility have access to wheelchair assistance at the airport. These passengers will also have access to accessible transportation, accessible restrooms, stair-free pathways, reserved parking spots, and fast-track services. Low-vision passengers will have free Aira services at SEA, while hard-of-hearing passengers get visual paging and TTY telephones.