FFL Helper

FFL Helper / Seattle / Philadelphia

SEA → PHL

Seattle to Philadelphia

Compare one-way fares for flights from Seattle to Philadelphia.

Lowest fare $138
Distance 2,373 mi
Flight time 7h 33m
Airports SEA–PHL
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By month: August 2026 from $138 · September 2026 from $264

Price calendar

August 2026

From $138 · up to $201

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27 $181 28 $159 29 $138 30 $181 31 $201

September 2026

From $264

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Upcoming dates

Philadelphia PHL

$138

Aug 29, 7:06pm · 7h 33m · 1 stop

SEA → PHL · Frontier Airlines

Tickets

Philadelphia PHL

$181

Aug 27, 7:06pm · 7h 33m · 1 stop

SEA → PHL · Frontier Airlines

Tickets

Philadelphia PHL

$181

Aug 30, 7:06pm · 7h 33m · 1 stop

SEA → PHL · Frontier Airlines

Tickets

Philadelphia PHL

$201

Aug 31, 7:06pm · 7h 33m · 1 stop

SEA → PHL · Frontier Airlines

Tickets

Philadelphia PHL

$264

Sep 06, 9:58pm · 5h 18m · 0 stops

SEA → PHL · American Airlines

Tickets

About this route

This calendar shows dated one-way fares from Seattle to Philadelphia. Use it to see which days are cheaper before you search tickets.

Flight time and airport codes on this page are for the sample itinerary we have on file. Always confirm the live routing when you book Seattle to Philadelphia.