Seattle (SEA) to Philadelphia (PHL) flights
3 airlines fly nonstop from Seattle (SEA) to Philadelphia (PHL): Alaska Airlines, American Airlines and Delta Air Lines. The two airports are 2,372 miles (3,817 km) apart. Alaska Airlines and American Airlines are in oneworld and Delta Air Lines is in SkyTeam. There are also 46 ways to fly it with one stop, through Minneapolis, Detroit and Cleveland and more.
Airlines flying nonstop from SEA to PHL
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
- American Airlinesoneworld · bookable with 9 programsWho books it
- Delta Air LinesSkyTeam · bookable with 8 programsWho books it
Book SEA to PHL with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks Alaska Airlines, American Airlines
- American AAdvantageBooks Alaska Airlines, American Airlines
- British Airways ClubBooks Alaska Airlines, American Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines, American Airlines
- Finnair PlusBooks Alaska Airlines, American Airlines
- Iberia ClubBooks Alaska Airlines, American Airlines
- JAL Mileage BankBooks Alaska Airlines, American Airlines
- Qantas Frequent FlyerBooks Alaska Airlines, American Airlines
- Qatar Airways Privilege ClubBooks Alaska Airlines, American Airlines
- Aeromexico RewardsBooks Delta Air Lines
- Air France-KLM Flying BlueBooks Delta Air Lines
- China Eastern Eastern MilesBooks Delta Air Lines
- Delta SkyMilesBooks Delta Air Lines
- Garuda Indonesia GarudaMilesBooks Delta Air Lines
- Korean Air SKYPASSBooks Delta Air Lines
- SAS EuroBonusBooks Delta Air Lines
- Virgin Atlantic Flying ClubBooks Delta Air Lines
SEA to PHL with one stop
46 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Minneapolis (MSP)Delta Air Lines and Sun Country Airlines the whole way
- Via Detroit (DTW)Delta Air Lines the whole way
- Via Cleveland (CLE)Alaska Airlines, then American Airlines
- Via Milwaukee (MKE)Alaska Airlines, then American Airlines
- Via Pittsburgh (PIT)American Airlines the whole way
- Via Chicago (ORD)American Airlines and United Airlines the whole way+1
- Via Chicago (MDW)Southwest Airlines the whole way
- Via Toronto (YYZ)Air Canada the whole way
- Via Columbus (CMH)Alaska Airlines, then American Airlines
- Via Baltimore (BWI)Southwest Airlines the whole way
- Via Dulles (IAD)United Airlines the whole way
- Via Washington (DCA)Alaska Airlines and Delta Air Lines, then American Airlines
- Via Indianapolis (IND)American Airlines the whole way
- Via Omaha (OMA)Alaska Airlines, then American Airlines
- Via Cincinnati (CVG)Delta Air Lines and Alaska Airlines, then American Airlines
SEA to PHL: common questions
Which airlines fly nonstop from SEA to PHL?
Alaska Airlines (oneworld), American Airlines (oneworld) and Delta Air Lines (SkyTeam) fly nonstop from Seattle (SEA) to Philadelphia (PHL).
How far is Seattle from Philadelphia by plane?
Seattle (SEA) and Philadelphia (PHL) are 2,372 miles (3,817 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book SEA to PHL award flights?
17 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, Finnair Plus, Iberia Club, JAL Mileage Bank, Qantas Frequent Flyer and 9 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does SEA to PHL cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for SEA to PHL with taxes and fees.
Where can I connect between Seattle and Philadelphia?
The most direct connections are through Minneapolis (MSP), Detroit (DTW), Cleveland (CLE), Milwaukee (MKE) and Pittsburgh (PIT). On 27 of them the same airline flies both flights, for example Delta Air Lines through Minneapolis.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.