For efficient check-in, verify your airline’s terminal before arriving at PHL. Terminals are spread out, and only some are connected by indoor walkways.
Most accurate provider | Mytrip 3 stars |
---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $291 (CheapOair) |
One-way from | $140 (Mytrip) |
Popular in | July |
Cheapest in | March |
Average price | $422 |
Good round-trip deal | $382 or less |
Good one-way deal | $222 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Tue 4/29
10:08 pm-11:35 am
1 stop16h 27m
Seattle/Tacoma Intl
Thu 5/1
12:21 pm-5:37 pm
1 stop26h 16m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Fri 4/25
10:08 pm-11:35 am
1 stop16h 27m
Seattle/Tacoma Intl
Mon 4/28
8:56 pm-4:22 pm
1 stop16h 26m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Wed 6/11
6:45 pm-12:04 am
1 stop8h 19m
Seattle/Tacoma Intl
Fri 7/4
5:30 am-5:33 pm
1 stop9h 03m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Thu 5/29
12:59 pm-6:10 pm
1 stop8h 11m
Seattle/Tacoma Intl
Mon 6/2
6:25 am-10:10 pm
1 stop12h 45m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Tue 6/3
6:45 pm-9:50 pm
Nonstop6h 05m
Seattle/Tacoma Intl
Thu 6/12
10:41 pm-6:48 am
Nonstop5h 07m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Wed 8/27
7:05 am-9:57 am
Nonstop5h 52m
Seattle/Tacoma Intl
Wed 9/3
9:30 pm-5:45 am
Nonstop5h 15m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Tue 5/27
7:59 pm-12:59 am
1 stop8h 00m
Seattle/Tacoma Intl
Tue 6/3
11:50 pm-2:09 pm
2 stops11h 19m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Tue 7/1
4:45 pm-12:30 am
2 stops10h 45m
Seattle/Tacoma Intl
Wed 7/16
10:55 pm-9:25 am
1 stop7h 30m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Sat 5/3
7:04 am-9:59 am
Nonstop5h 55m
Seattle/Tacoma Intl
Tue 5/6
9:29 pm-5:44 am
Nonstop5h 15m
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Sun 6/15
10:42 am-3:03 pm
1 stop31h 21m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy- | Trust Score*1 star | |
Price Accuracy- | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy1 star | Trust Score*3 stars |
The best time to book flights from Philadelphia to Seattle is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, January is the cheapest month in which you can book a flight from Philadelphia to Seattle (average of $238). Flying from Philadelphia to Seattle in July is currently the most expensive (average of $411). 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.
One of the essential ways to save on airfare from Philadelphia to Seattle is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 25% on airfare.
Travelers seeking maximum savings on their Philadelphia to Seattle flight should consider departing on Tuesday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from PHL to SEA are scheduled on a Friday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).
In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.
If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).
Crew
Overall
Entertainment
Boarding
Food
Comfort
Reviews
Cheri,Jan 2025
FAT - SEA
Crew
Overall
Entertainment
Boarding
Food
Comfort
Reviews
Cheri,Jan 2025
FAT - SEA
Crew
Overall
Entertainment
Boarding
Food
Comfort
Reviews
Cheri,Jan 2025
FAT - SEA
Crew
Overall
Entertainment
Boarding
Food
Comfort
Reviews
Cheri,Jan 2025
FAT - SEA
Crew
Overall
Entertainment
Boarding
Food
Comfort
Reviews
Cheri,Jan 2025
FAT - SEA
Crew
Overall
Entertainment
Boarding
Food
Comfort
Reviews
Cheri,Jan 2025
FAT - SEA
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$115 | Average$261 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$129 | Average$241 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$139 | Average$247 | FlexibilityNo cancel fee | On-time65% | |
Cheapest$202 | Average$317 | FlexibilityNo cancel fee | On-time83% | |
Cheapest$238 | Average$455 | FlexibilityNo cancel fee | On-time85% | |
Cheapest$277 | Average$408 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$289 | Average$478 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$294 | Average$481 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$307 | Average$477 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$327 | Average$467 | FlexibilityNo cancel fee | On-time63% |