Direct (nonstop) flights from Seattle to Philadelphia
3 airlines fly nonstop from Seattle Tacoma International (SEA) to Philadelphia International Airport (PHL). It's 2,377 miles (3,826 km), about 5h 14m in the air. Operated by American Airlines, Alaska Airlines, Delta Air Lines.
American Airlines
Alaska Airlines
Delta Air Lines
Route data last updated: May 30, 2026
Airlines with non-stop flights
AA
American Airlines
AS
Alaska Airlines
DL
Delta Air Lines
Alternative Routes
Other ways to fly from Seattle to Philadelphia with one stop · direct emits 402 kg CO₂ per passenger
Looking for the return flight?
PHL → SEA: Flights from Philadelphia to SeattleOther direct flights from Seattle
Direct flights from Philadelphia (PHL)
Frequently Asked Questions
How long is the direct flight from Seattle to Philadelphia?
A nonstop flight from Seattle (SEA) to Philadelphia (PHL) takes approximately 5 hours and 14 minutes. The distance is 2,377 miles (3,826 km).
Which airlines fly nonstop from Seattle to Philadelphia?
3 airlines: American Airlines, Alaska Airlines, Delta Air Lines.
Is there a nonstop flight from Seattle to Philadelphia?
Yes. 3 airlines: American Airlines, Alaska Airlines, Delta Air Lines.
How far is Seattle from Philadelphia?
The flight distance from Seattle to Philadelphia 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 Seattle to Philadelphia?
At 5h 14m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Seattle to Philadelphia?
Roughly 402 kg CO2 per passenger one-way. That's about the same as driving 2,010 km.
Is the return flight from Philadelphia to Seattle 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 Seattle to Philadelphia?
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 Seattle Tacoma International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.