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Flights from Philadelphia Intl. Airport (PHL) to Seattle-Tacoma International Airport (SEA)
Flights to Seattle
Washington
United States of America
Flights
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Popular airlines from Philadelphia Intl. Airport (PHL) to Seattle-Tacoma International Airport (SEA)

Alaska Airlines
American Airlines
Delta
United
Southwest Airlines
JetBlue Airways
Sun Country Airlines

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Cheap Flights from Philadelphia to Seattle (PHL-SEA)

Prices were available within the past 7 days and start at NT$7,274 for one-way flights and NT$18,329 for roundtrip, for the period specified. Prices and availability are subject to change.

All deals

One way

Roundtrip

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$18,329

Roundtrip

Found 3 hours ago

Select American Airlines flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$18,329 Found 3 hours ago

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$18,488

Roundtrip

Found 3 hours ago

Select American Airlines flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$18,488 Found 3 hours ago

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$18,643

Roundtrip

Found 3 hours ago

Select American Airlines flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$18,643 Found 3 hours ago

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$18,802

Roundtrip

Found 3 hours ago

Select American Airlines flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$18,802 Found 3 hours ago

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$19,131

Roundtrip

Found 3 hours ago

Select American Airlines flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$19,131 Found 3 hours ago

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$19,445

Roundtrip

Found 3 hours ago

Select American Airlines flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$19,445 Found 3 hours ago

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$19,729

Roundtrip

Found 3 hours ago

Select American Airlines flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$19,729 Found 3 hours ago

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$19,759

Roundtrip

Found 3 hours ago

Select American Airlines flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$19,759 Found 3 hours ago

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$20,404

Roundtrip

Found 3 hours ago

Select American Airlines flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$20,404 Found 3 hours ago

Fri, Dec 25 - Mon, Jan 4

PHL

Philadelphia

SEA

Seattle

NT$24,680

Roundtrip

Found 3 hours ago

Select Delta flight, departing Fri, Dec 25 from Philadelphia to Seattle, returning Mon, Jan 4, priced at NT$24,680 Found 3 hours ago

Find the cheapest month to fly from Philadelphia (PHL) to Seattle (SEA)

October is typically the cheapest month to fly

From NT$9,240 - NT$12,685 per traveler.

Travel information

Origin airport	Philadelphia Intl. Airport
Destination airport	Seattle-Tacoma International Airport
Distance	3,816 km away
Airlines serving	Alaska Airlines, American Airlines, Delta, United, Southwest Airlines, JetBlue Airways, Sun Country Airlines, Frontier Airlines
Popular airline	Alaska Airlines
Roundtrip price	NT$18,329
Average flight time	6 hours 7 mins

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NT$7,274 Cheap Flights from Philadelphia (PHL) to Seattle (SEA)

Popular airlines from Philadelphia Intl. Airport (PHL) to Seattle-Tacoma International Airport (SEA)

Be in the know

Book smarter

Earn twice

Cheap Flights from Philadelphia to Seattle (PHL-SEA)

Find the cheapest month to fly from Philadelphia (PHL) to Seattle (SEA)

October is typically the cheapest month to flyOctober is typically the cheapest month to fly

Travel information

Explore a world of travel with Expedia

October is typically the cheapest month to fly