Philadelphia > Seattle > Northwest > Flight Schedules & Airfares from PHL to SEA on Northwest
Flight Schedules & Airfares from Philadelphia (PHL) to Seattle (SEA) on Northwest
Northwest
Fare Compare has compiled a flight listing for all cities served by Northwest.
This page displays a weekly flight schedule of all flights, roundtrip fares and one-way fares for these flights
departing
from Philadelphia, Pennsylvania (PHL) to
Seattle, Washington (SEA).
Opposite
Direction Flight Schedules - Seattle to Philadelphia
Roundtrip Fares
The following are roundtrip airfares listed from lowest to highest price from Philadelphia to Seattle on Northwest. The roundtrip fare class code is listed along with the advance purchase in days, first/last travel time window (no restriction if blank), maximum stay, and a notation of whether or not certain time periods are ineligible (blackouts).
One-Way Fares
The following are one-way airfares from lowest to highest price on Northwest departing from Philadelphia arriving at Seattle. The one-way fare class code is listed along with the advance purchase in days, first/last departure time period (if any), and a notation of whether or not certain time periods are blacked out.
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