
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $247 (United Airlines) |
One-way from | $85 (Priceline) |
Popular in | June |
Cheapest in | October |
Average price | $357 |
Good round-trip deal | $288 or less |
Good one-way deal | $160 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Sat 1/10
1:25 pm-9:05 pm
2 stops10h 40m
Seattle/Tacoma Intl
Sat 1/24
5:15 am-3:40 pm
1 stop7h 25m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Sat 12/6
6:20 am-11:10 am
1 stop7h 50m
Seattle/Tacoma Intl
Fri 12/12
6:35 am-6:20 pm
1 stop8h 45m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Thu 12/4
6:54 pm-10:12 pm
Nonstop6h 18m
Seattle/Tacoma Intl
Tue 12/9
9:44 am-5:53 pm
Nonstop5h 09m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Sun 3/1
6:35 pm-9:47 pm
Nonstop6h 12m
Seattle/Tacoma Intl
Sat 3/7
9:15 am-5:31 pm
Nonstop5h 16m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Thu 12/4
6:35 am-6:40 pm
1 stop15h 05m
Seattle/Tacoma Intl
Tue 12/9
6:35 am-5:20 pm
1 stop7h 45m
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Sat 1/24
5:55 am-4:10 pm
2 stops13h 15m
Spokane
Sat 1/31
11:15 am-11:08 pm
2 stops8h 53m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Wed 11/19
5:24 pm-10:23 pm
1 stop7h 59m
Seattle/Tacoma Intl
Thu 11/27
5:25 am-5:37 pm
1 stop9h 12m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Tue 11/18
7:12 pm-10:30 pm
Nonstop6h 18m
Seattle/Tacoma Intl
Sun 11/23
9:36 pm-5:47 am
Nonstop5h 11m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Sat 11/22
7:10 am-2:59 pm
1 stop10h 49m
Seattle/Tacoma Intl
Thu 11/27
5:25 am-5:36 pm
1 stop9h 11m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Fri 11/21
6:14 am-10:54 am
1 stop7h 40m
Seattle/Tacoma Intl
Thu 11/27
5:25 am-5:36 pm
1 stop9h 11m
Currently, October is the cheapest month in which you can book a flight from Philadelphia to State of Washington (average of $139). Flying from Philadelphia to State of Washington in April is currently the most expensive (average of $237). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Unlike in the evening, when flights are generally more expensive, you can save up to 17% on flights from Philadelphia to State of Washington by exploring options for tickets in the afternoon.
Travelers seeking maximum savings on their Philadelphia to State of Washington flight should consider departing on Monday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from PHL to USWA are scheduled on a Friday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).
Boarding
Comfort
Entertainment
Overall
Crew
Food
Reviews
Anonymous,Aug 2025
MFR - SEA
Boarding
Comfort
Entertainment
Overall
Crew
Food
Reviews
Anonymous,Aug 2025
MFR - SEA
Boarding
Comfort
Entertainment
Overall
Crew
Food
Reviews
Anonymous,Aug 2025
MFR - SEA
Boarding
Comfort
Entertainment
Overall
Crew
Food
Reviews
Anonymous,Aug 2025
MFR - SEA
Boarding
Comfort
Entertainment
Overall
Crew
Food
Reviews
Anonymous,Aug 2025
MFR - SEA
Boarding
Comfort
Entertainment
Overall
Crew
Food
Reviews
Anonymous,Aug 2025
MFR - SEA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$127 | Average$252 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$128 | Average$293 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$234 | Average$439 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$238 | Average$360 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$257 | Average$474 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$277 | Average$542 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$277 | Average$439 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$286 | Average$494 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$294 | Average$464 | FlexibilityNo cancel fee | On-time63% |