Direct (nonstop) flights from Philadelphia to Seattle
3 airlines fly nonstop from Philadelphia International Airport (PHL) to Seattle Tacoma International (SEA). It's 2,377 miles (3,826 km), about 6h 5m in the air. Operated by American Airlines, Alaska Airlines, Delta Air Lines.
American Airlines
Alaska Airlines
Delta Air Lines
Route data last updated: May 22, 2026
Airlines with non-stop flights
AA
American Airlines
AS
Alaska Airlines
DL
Delta Air Lines
Alternative Routes
Other ways to fly from Philadelphia to Seattle with one stop · direct emits 402 kg CO₂ per passenger
Looking for the return flight?
SEA → PHL: Flights from Seattle to PhiladelphiaOther direct flights from Philadelphia
Direct flights from Seattle (SEA)
Frequently Asked Questions
How long is the direct flight from Philadelphia to Seattle?
A nonstop flight from Philadelphia (PHL) to Seattle (SEA) takes approximately 6 hours and 5 minutes. The distance is 2,377 miles (3,826 km).
Which airlines fly nonstop from Philadelphia to Seattle?
3 airlines: American Airlines, Alaska Airlines, Delta Air Lines.
Is there a nonstop flight from Philadelphia to Seattle?
Yes. 3 airlines: American Airlines, Alaska Airlines, Delta Air Lines.
How far is Philadelphia from Seattle?
The flight distance from Philadelphia to Seattle is 2,377 miles (3,826 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Los Angeles.
What type of aircraft flies from Philadelphia to Seattle?
At 6h 5m, this route typically uses wide-body aircraft — Boeing 777, 787, or Airbus A330/A350. Varies by airline.
What is the carbon footprint of a flight from Philadelphia to Seattle?
Roughly 402 kg CO2 per passenger one-way. That's about the same as driving 2,010 km.
Is the return flight from Seattle to Philadelphia also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Philadelphia to Seattle?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Philadelphia International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.