Search & Compare - Philadelphia to Seattle Flights & Tickets

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Cheap Flights from Philadelphia (PHL) to Seattle (SEA)

Looking for a cheap last-minute deal or the best round-trip flight from Philadelphia to Seattle? Find the biggest savings on one-way and round-trip tickets right here.

Recent airfare deals on Philadelphia to Seattle

Southwest Airlines  WN
Southwest Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 260

One-way WN fare found on 2025-06-03
United Airlines  UA
United Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 327

One-way UA fare found on 2025-06-03
United Airlines  UA
United Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 346

One-way UA fare found on 2025-06-03
American Airlines  AA
American Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 369

One-way AA Nonstop fare found on 2025-06-03
Southwest Airlines  WN
Southwest Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 440

One-way WN fare found on 2025-06-03
Hawaiian Airlines  HA
Hawaiian Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 441

One-way HA fare found on 2025-06-03
Southwest Airlines  WN
Southwest Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 501

One-way WN fare found on 2025-06-03
United Airlines  UA
United Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 545

One-way UA fare found on 2025-06-03
United Airlines  UA
United Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 625

One-way UA fare found on 2025-06-03
American Airlines  AA
American Airlines
Philadelphia
2025-07-03
Seattle
2025-07-19
USD 905

One-way AA Nonstop fare found on 2025-06-03


*Prices are per person and are for e-tickets and include all taxes & fees in USD.
*Fareleaders always attempts to get accurate pricing, however, prices are not guaranteed.
*Fareleaders is not seller, we aggregate tones of data for you from other online travel agencies and external sources.

Facts to know while booking flights from Philadelphia to Seattle

What are the airports in Philadelphia?
PHL
What’s the most popular airline flying from PHL to SEA?
The most popular airline flying from Philadelphia to Seattle are American Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Frontier Airlines, United Airlines, Alaska Airlines, Delta Airlines
Can I fly from PHL to SEA non-stop?
Yes, you can fly PHL to SEA non-stop on American Airlines, Hawaiian Airlines, Frontier Airlines, United Airlines, Alaska Airlines
Which airlines fly nonstop between Philadelphia and Seattle?
The non-stop flights between Philadelphia and Seattle are American Airlines, Hawaiian Airlines, Frontier Airlines, United Airlines, Alaska Airlines.
What’s the earliest departure time from PHL to SEA Airport?
The earliest flight leaves PHL at 5:00 am and lands in SEA - Seattle Tacoma International
What are the airports in Seattle?
SEA
Can I make changes to my Philadelphia to Seattle flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from PHL to SEA?
Read the fare rules of the Philadelphia to Seattle air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Philadelphia and Seattle?
Oneworld, NULL, NULL, NULL, NULL, Star Alliance, Oneworld, SkyTeam operate flights between Philadelphia and Seattle
How long does a flight from Philadelphia to Seattle take?
It takes approximately 5 hour to fly non-stop from PHL to SEA, which is 2378.21 miles by air.
Which airlines provide the cheapest flights from Philadelphia (PHL) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from PHL were found on United Airlines : USD 545
Do I need a passport to fly between PHL and SEA?
No
What’s the latest departure time from PHL to SEA ?
The last flight leaves PHL at 7:5900 pm

Flights from Philadelphia to Seattle

Origin AirportPhiladelphia International , Philadelphia, US
Destination AirportSeattle Tacoma International , Seattle, US
Served by AirlinesAmerican Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Frontier Airlines, United Airlines, Alaska Airlines, Delta Airlines
Lowest PriceUnited Airlines : USD 545
Distance2378 miles

Airlines Flying from Philadelphia International

Popular Routes

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