$165 Cheap American Airlines flights Seattle (SEA) to Philadelphia (PHL)

View $165 flight on Tue, May 5, 2026Opens in a new window

$165 Cheap American Airlines flights Seattle (SEA) to Philadelphia (PHL)

Prices were available within the past 7 days and start at $165 for one-way flights and $317 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, May 5 - Fri, May 15
SEA
Seattle
PHL
Philadelphia
$317 Roundtrip, found 4 hours ago
$317
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, May 5 from Seattle to Philadelphia, returning Fri, May 15, priced at $317 found 4 hours ago
American Airlines
Tue, May 5 - Fri, May 15
SEA
Seattle
PHL
Philadelphia
$337 Roundtrip, found 4 hours ago
$337
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, May 5 from Seattle to Philadelphia, returning Fri, May 15, priced at $337 found 4 hours ago
American Airlines
Tue, May 5 - Fri, May 15
SEA
Seattle
PHL
Philadelphia
$353 Roundtrip, found 4 hours ago
$353
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, May 5 from Seattle to Philadelphia, returning Fri, May 15, priced at $353 found 4 hours ago

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

March is typically the cheapest month to fly

From $148 - $402 per traveler.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Philadelphia Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Alaska Airlines
Distance
3794 km
Average flight time
8 hours 11 mins

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