
$259 Cheap United flights Philadelphia (PHL) to Seattle (SEA)
Prices were available within the past 7 days and start at $259 for one-way flights and $373 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jul 4 - Mon, Jul 13
PHL
Philadelphia
SEA
Seattle
$373 Roundtrip, found 1 day ago
$373
Roundtrip
found 1 day ago

Sat, Jul 4 - Mon, Jul 13
PHL
Philadelphia
SEA
Seattle
$403 Roundtrip, found 1 day ago
$403
Roundtrip
found 1 day ago

Sat, Jul 4 - Mon, Jul 13
PHL
Philadelphia
SEA
Seattle
$407 Roundtrip, found 1 day ago
$407
Roundtrip
found 1 day ago

Sat, Jul 4 - Mon, Jul 13
PHL
Philadelphia
SEA
Seattle
$411 Roundtrip, found 1 day ago
$411
Roundtrip
found 1 day ago

Fri, Jul 3 - Mon, Jul 13
PHL
Philadelphia
SEA
Seattle
$416 Roundtrip, found 20 hours ago
$416
Roundtrip
found 20 hours ago

Fri, Jul 3 - Mon, Jul 13
PHL
Philadelphia
SEA
Seattle
$420 Roundtrip, found 20 hours ago
$420
Roundtrip
found 20 hours ago
Find the cheapest month to fly from Philadelphia (PHL) to Seattle (SEA)
March is typically the cheapest month to fly
From $148 - $377 per traveler.
Origin airport | Philadelphia Intl. |
|---|---|
Destination airport | Seattle - Tacoma Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United |
Popular airline | Alaska Airlines |
Distance | 3794 km |
Average flight time | 3 hours 20 mins |
Most Popular United Routes from Philadelphia
Most Popular United Routes from Seattle
- Orange County to North Platte (SNA - LBF)
- Los Angeles to Lisbon (LAX - LIS)
- New York to Hong Kong (JFK - HKG)
- Washington to Montrose (DCA - MTJ)
- Boston to Seattle (BOS - SEA)
- San Francisco to Manila (SFO - MNL)
- Missoula to Kansas City (MSO - MCI)
- Cincinnati to Boston (CVG - BOS)
- Montrose to Knoxville (MTJ - TYS)
- Orange County to Denver (SNA - DEN)
Popular Domestic Routes in Seattle - Tacoma Intl.
- Orange County to Denver (SNA - DEN)
- Newark Liberty Intl. Airport to West Palm Beach (EWR - PBI)
- Cincinnati to Boston (CVG - BOS)
- Montrose to Knoxville (MTJ - TYS)
- Washington to Montrose (IAD - MTJ)
- Orange County to North Platte (SNA - LBF)
- Atlanta to New York (ATL - LGA)
- Orange County to Denver (SNA - DEN)
- Montrose to Knoxville (MTJ - TYS)
- Washington to Montrose (DCA - MTJ)