Direct (non-stop) flights from Philadelphia (PHL) to SeaTac (SEA)
Find comprehensive flight information, schedules, and booking details for direct flights from Philadelphia (PHL) to SeaTac (SEA). This popular route is operated by 2 airlines, offering multiple daily departures.• Flight Duration: 5h 54m - 6h 30m (average flight time)• Distance: 2385 miles (3837 km) (air miles between airports)• Daily Flights: 2-3 flights (scheduled departures per day)
Philadelphia (PHL)
SeaTac (SEA)
FLIGHT TIME
5h 54m - 6h 30m
FLIGHT DISTANCE
2385 miles (3837 km)
6h 6m - 6h 25m
07:10
18:45
2385 miles (3837 km)
January
2 (Show)
19
Flight Schedule
December 2025
Airlines with direct flights from Philadelphia (PHL) to SeaTac (SEA)
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 5h 54m - 6h 30m.
Pricing patterns: January typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 18:00, 7:00, offering more flight options and potentially better connections.
Philadelphia (PHL) - SeaTac (SEA) flight price statistics
$458
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$266
Jan$518
Feb$273
Mar$353
Apr$356
May$857
Jun$638
Jul$638
Aug$377
Sep$357
Oct$508
Nov$358
DecRelated Information
Airports: PHL • SEA Airport
Airlines operating this route: Alaska Airlines (AS), American Airlines
Frequently Asked Questions
How many flights operate from PHL to SEA?
There are 3 direct flights operating from PHL to SEA. Approximately 2-3 flights daily.
Which airlines operate flights from PHL to SEA?
2 airlines operate on this route: Alaska Airlines, American Airlines.
How long is the flight from PHL to SEA?
The flight duration from PHL to SEA is approximately 5h 54m - 6h 30m.
What is the distance from PHL to SEA?
The distance from PHL to SEA is 2385 miles (3837 km).
What is the flight time range for this route?
Flight times on this route range from 6h 6m - 6h 25m.
What are the earliest and latest flight departure times?
The earliest flight departs at 07:10 and the latest flight departs at 18:45.
What is the cheapest month to fly from PHL to SEA?
January is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 19 flights operate per week from PHL to SEA.
What types of aircraft operate on this route?
This route is served by Boeing 737MAX 9 Passenger, Airbus A321neo.
What is the average flight price from PHL to SEA?
The average flight price for a round-trip ticket from PHL to SEA is approximately $458 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from PHL to SEA for the lowest prices?
January is typically the cheapest month to fly from PHL to SEA. Booking in advance and avoiding peak travel seasons can help you find better deals.
How many airlines offer flights from PHL to SEA?
2 airlines offer direct flights from PHL to SEA, providing travelers with multiple options for scheduling and pricing.
How far is SEA from PHL?
The distance from PHL to SEA is 2385 miles (3837 km). This is a long-haul flight route.
How long does it take to fly from PHL to SEA?
The flight time from PHL to SEA is approximately 5h 54m - 6h 30m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.