Home Fares From A City Philadelphia, PA Philadelphia, PA (PHL) To Seattle, WA (SEA)
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HOW TO FIND THIS FARE
  • AIRLINES
    Frontier
  • PURCHASE BY
    Mon, August 29, 2016
  • TRAVEL ENDING
    Wed, November 16, 2016
Peter T.
Staff Airfare Analyst
Peter's Notes:
20% off* Promo Code Fare; Late Summer/Fall travel. No min. stay. Fare can be bought one-way for half the lowest roundtrip price.
Book this fare on FlyFrontier.com using promo code SAVE20 for Sun-Thu & Sat travel between Aug. 30 - Nov. 16, 2016. This fare may require a long layover in Denver.

This is the lowest fare found within the promo code travel period and may not be available throughout the entire travel period or on a daily basis. Some routes are seasonal and may not operate through the entire travel period. Lower fares may be available for Frontier Discount Den members.

*Promo code takes 20% off the base fare only and does not apply to taxes/fees. This promo code expires at 11:59 p.m. ET on Aug. 29, 2016.

Frontier charges a $30-$35 fee each way for carry-on bags larger than 18x14x8 inches and a $25-$30 fee each way for first checked bag no larger than 62 linear inches (length + width + depth) and no heavier than 50 pounds. These bag fees apply to online purchases before check-in. Higher fees apply at the airport.

During booking on FlyFrontier.com, you can purchase "The Works", which includes one checked bag, one carry-on bag, stretch seating, no change fees, and refundability, for much less than purchasing these items separately.
To the best of our knowledge, there is a reasonable amount of seat availability at the stated price. Flexible travel dates may be required to find this rate; seats may not be available on all flights or all dates of travel. Holiday periods may be excluded. We monitor the availability of the fare and take efforts to remove and/or modify fares when no longer available.
All mandatory taxes/fees are included in the price. Tax-inclusive fare may be a few dollars higher or lower depending on the airport you connect through, if any. Baggage fees, if applicable, and other optional fees are not included. Our Dealhounds found this airfare using flexible date search. This means we searched a range of dates to find you the best price.
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Reviews for Philadelphia to Seattle
7 Traveler Reviews
"First class barely second class"
Flight from Philadelphia to Seattle
Airline: US Airways
RT/OW: roundtrip
Date of Flight: April 2011
Seat Class: first
Check-in Experience
In-flight Service
Seat Comfort
First and last time to fly on US airways. We upgraded to first class which gave us some leg room and a meal. No in flight entertainment of any kind which made our over four hour flight seem even longer.
Found by other travelers: Philadelphia, PA (PHL) to Seattle, WA (SEA)
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Flight from Philadelphia to Seattle (PHL - SEA)
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Flight from Philadelphia to Seattle (PHL - SEA)
Fri, Jul 18 - Sun, Jul 27
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$550
Flight from Philadelphia to Seattle (PHL - SEA)
Wed, Jul 16 - Sun, Jul 27
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$457
Flight from Philadelphia to Seattle (PHL - SEA)
Tue, Jul 15 - Fri, Aug 1
US Airways
$446
Flight from Philadelphia to Seattle (PHL - SEA)
Mon, Jul 21 - Thu, Jul 24
US Airways
$459
Flight from Philadelphia to Seattle (PHL - SEA)
Sat, Jun 7 - Sat, Jun 14
Delta
$493
Flight from Philadelphia to Seattle (PHL - SEA)
Sat, Jul 12 - Mon, Jul 21
US Airways
$514
Flight from Philadelphia to Seattle (PHL - SEA)
Tue, Jul 22 - Fri, Aug 1
US Airways
There are approximately 371 flights covering the route from Philadelphia International Airport in Philadelphia to Seattle/Tacoma International Airport in Seattle, provided by as many as 10 airlines.
The following airlines often offer cheap flights from Philadelphia to Seattle
Alaska
AirTran
Continental
Southwest
United
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