United Airlines flights from Seattle-Tacoma (SEA) to Philadelphia (PHL).

Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
Daily 05:00 Seattle-Tacoma (SEA) 17:22 Philadelphia (PHL) D
United Airlines UA 706 1-stop Boeing 737 MAX 9 (7M9) 9:22 Effective 2025-06-27 through 2025-07-04
Sat 05:00 Seattle-Tacoma (SEA) 17:22 Philadelphia (PHL) D
United Airlines UA 706 1-stop Boeing 737-900 (739) 9:22 Operates only on 2025-07-05
Daily 05:00 Seattle-Tacoma (SEA) 17:22 Philadelphia (PHL) D
United Airlines UA 706 1-stop Boeing 737 MAX 9 (7M9) 9:22 Effective 2025-07-06 through 2025-08-18
Mon-Thu,Sun 19:00 Seattle-Tacoma (SEA) 05:37 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Boeing 737-800 (738) 7:37 Effective 2025-06-26 through 2025-07-31
The flight arrives 1 day after departure.
Sat 19:00 Seattle-Tacoma (SEA) 05:37 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Boeing 737 MAX 8 (7M8) 7:37 Operates only on 2025-06-28
The flight arrives 1 day after departure.
Sat 19:00 Seattle-Tacoma (SEA) 05:37 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Boeing 737 MAX 8 (7M8) 7:37 Effective 2025-07-12 through 2025-07-26
The flight arrives 1 day after departure.
Fri 19:02 Seattle-Tacoma (SEA) 05:37 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Boeing 737-800 (738) 7:35 Operates only on 2025-06-27
The flight arrives 1 day after departure.
Fri 19:02 Seattle-Tacoma (SEA) 05:37 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Boeing 737-800 (738) 7:35 Effective 2025-07-11 through 2025-07-25
The flight arrives 1 day after departure.
Daily 19:05 Seattle-Tacoma (SEA) 05:35 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Boeing 737-800 (738) 7:30 Effective 2025-08-19 through 2025-09-24
The flight arrives 1 day after departure.
Mon-Fri,Sun 19:10 Seattle-Tacoma (SEA) 05:29 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Airbus A320 (320) 7:19 Effective 2025-10-26 through 2025-10-31
The flight arrives 1 day after departure.
Sat 19:10 Seattle-Tacoma (SEA) 04:29 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Airbus A320 (320) 7:19 Operates only on 2025-11-01
The flight arrives 1 day after departure.
Daily 19:10 Seattle-Tacoma (SEA) 05:29 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Airbus A320 (320) 7:19 Effective 2025-11-02 through 2025-12-01
The flight arrives 1 day after departure.
Daily 19:10 Seattle-Tacoma (SEA) 05:29 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Airbus A320 (320) 7:19 Effective 2025-12-18 through 2026-01-05
The flight arrives 1 day after departure.
Thu,Sun 19:15 Seattle-Tacoma (SEA) 05:35 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Boeing 737-800 (738) 7:20 Valid until 2025-05-18
The flight arrives 1 day after departure.
Wed 19:15 Seattle-Tacoma (SEA) 05:35 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Airbus A319 (319) 7:20 Effective 2025-05-07 through 2025-05-14
The flight arrives 1 day after departure.
Wed 19:15 Seattle-Tacoma (SEA) 05:35 Philadelphia (PHL) D
United Airlines UA 1218 1-stop Boeing 737 MAX 8 (7M8) 7:20 Operates only on 2025-05-21
The flight arrives 1 day after departure.
Thu 07:00 Seattle-Tacoma (SEA) 17:31 Philadelphia (PHL) D
United Airlines UA 1617 1-stop Boeing 737 MAX 9 (7M9) 7:31 Operates only on 2025-05-22
Daily 07:00 Seattle-Tacoma (SEA) 17:31 Philadelphia (PHL) D
United Airlines UA 1617 1-stop Airbus A321neo (32Q) 7:31 Effective 2025-05-23 through 2025-06-25
Daily 07:00 Seattle-Tacoma (SEA) 17:36 Philadelphia (PHL) D
United Airlines UA 1617 1-stop Airbus A321neo (32Q) 7:36 Effective 2025-06-26 through 2025-07-31


United Airlines flights from Seattle-Tacoma (SEA) to Philadelphia (PHL).
Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:

Effective 2025-06-27 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:22, 1-stop
Boeing 737 MAX 9 (7M9)

Operates only on 2025-07-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 9:22, 1-stop
Boeing 737-900 (739)

Effective 2025-07-06 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:22, 1-stop
Boeing 737 MAX 9 (7M9)

Effective 2025-06-26 through 2025-07-31
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 7:37, 1-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.

Operates only on 2025-06-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:37, 1-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Effective 2025-07-12 through 2025-07-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:37, 1-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Operates only on 2025-06-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 7:35, 1-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.

Effective 2025-07-11 through 2025-07-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 7:35, 1-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.

Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:30, 1-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.

Effective 2025-10-26 through 2025-10-31
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 7:19, 1-stop
Airbus A320 (320)
The flight arrives 1 day after departure.

Operates only on 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:19, 1-stop
Airbus A320 (320)
The flight arrives 1 day after departure.

Effective 2025-11-02 through 2025-12-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:19, 1-stop
Airbus A320 (320)
The flight arrives 1 day after departure.

Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:19, 1-stop
Airbus A320 (320)
The flight arrives 1 day after departure.

Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 7:20, 1-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.

Effective 2025-05-07 through 2025-05-14
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 7:20, 1-stop
Airbus A319 (319)
The flight arrives 1 day after departure.

Operates only on 2025-05-21
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 7:20, 1-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Operates only on 2025-05-22
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 7:31, 1-stop
Boeing 737 MAX 9 (7M9)

Effective 2025-05-23 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:31, 1-stop
Airbus A321neo (32Q)

Effective 2025-06-26 through 2025-07-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:36, 1-stop
Airbus A321neo (32Q)
  • A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Philadelphia airport (PHL).
  • The flight distance is 2371 miles, or 3815 km.
  • The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-5 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.