Singapore Airlines flights from Phoenix Sky Harbor (PHX) to Seattle-Tacoma (SEA).

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Sat 17:37 Phoenix Sky Harbor (PHX) 3 20:46 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 9 (7M9) 3:09 Operates only on 2024-11-02
Codeshare flight, operated by Alaska Airlines.(AS 602)
Sat 18:37 Phoenix Sky Harbor (PHX) 3 20:46 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-900 (739) 3:09 Operates only on 2024-11-09
Codeshare flight, operated by Alaska Airlines.(AS 602)
Sat 18:37 Phoenix Sky Harbor (PHX) 3 20:46 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-800 (73H) 3:09 Operates only on 2024-11-16
Codeshare flight, operated by Alaska Airlines.(AS 602)
Wed 18:41 Phoenix Sky Harbor (PHX) 3 20:50 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 9 (7M9) 3:09 Effective 2024-11-06 through 2024-11-20
Codeshare flight, operated by Alaska Airlines.(AS 602)
Sat 18:50 Phoenix Sky Harbor (PHX) 3 22:00 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-900 (739) 3:10 Operates only on 2024-10-26
Codeshare flight, operated by Alaska Airlines.(AS 763)
Wed 19:45 Phoenix Sky Harbor (PHX) 3 22:00 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-800 (73H) 3:15 Operates only on 2024-12-04
Codeshare flight, operated by Alaska Airlines.(AS 763)
Sat 19:45 Phoenix Sky Harbor (PHX) 3 22:00 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 9 (7M9) 3:15 Effective 2024-12-07 through 2024-12-14
Codeshare flight, operated by Alaska Airlines.(AS 763)
Wed 19:45 Phoenix Sky Harbor (PHX) 3 22:00 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Operates only on 2024-12-11
Codeshare flight, operated by Alaska Airlines.(AS 763)
Wed 19:45 Phoenix Sky Harbor (PHX) 3 22:00 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-900 (739) 3:15 Operates only on 2024-12-18
Codeshare flight, operated by Alaska Airlines.(AS 763)
Wed,Sat 19:50 Phoenix Sky Harbor (PHX) 3 22:54 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:04 Valid until 2024-09-28
Codeshare flight, operated by Alaska Airlines.(AS 763)
Mon,Wed,Fri,Sat 20:15 Phoenix Sky Harbor (PHX) 3 23:35 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:20 Effective 2025-03-10 through 2025-03-17
Codeshare flight, operated by Alaska Airlines.(AS 53)
Mon,Wed,Fri,Sat 20:15 Phoenix Sky Harbor (PHX) 3 23:15 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:00 Effective from 2025-03-19
Codeshare flight, operated by Alaska Airlines.(AS 611)
Sat 20:20 Phoenix Sky Harbor (PHX) 3 22:35 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:15 Effective 2024-12-21 through 2025-01-04
Codeshare flight, operated by Alaska Airlines.(AS 645)
Mon 20:29 Phoenix Sky Harbor (PHX) 3 23:44 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 9 (7M9) 3:15 Operates only on 2024-10-28
Codeshare flight, operated by Alaska Airlines.(AS 619)
Fri 20:29 Phoenix Sky Harbor (PHX) 3 23:44 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-900 (739) 3:15 Operates only on 2024-11-01
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon,Fri 20:42 Phoenix Sky Harbor (PHX) 3 23:44 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:02 Valid until 2024-09-02
Codeshare flight, operated by Alaska Airlines.(AS 619)
Fri 20:42 Phoenix Sky Harbor (PHX) 3 23:44 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 9 (7M9) 3:02 Operates only on 2024-09-06
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon,Fri 20:42 Phoenix Sky Harbor (PHX) 3 23:44 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:02 Effective 2024-09-09 through 2024-09-23
Codeshare flight, operated by Alaska Airlines.(AS 619)
Fri 20:42 Phoenix Sky Harbor (PHX) 3 23:44 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 9 (7M9) 3:02 Operates only on 2024-09-27
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon 20:42 Phoenix Sky Harbor (PHX) 3 23:44 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:02 Operates only on 2024-09-30
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon,Fri 20:50 Phoenix Sky Harbor (PHX) 3 23:59 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-800 (73H) 3:09 Effective 2024-10-04 through 2024-10-21
Codeshare flight, operated by Alaska Airlines.(AS 619)
Fri 20:50 Phoenix Sky Harbor (PHX) 3 23:59 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 8 (7M8) 3:09 Operates only on 2024-10-25
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon,Wed,Fri,Sat 21:15 Phoenix Sky Harbor (PHX) 3 23:35 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:20 Effective 2025-01-06 through 2025-03-08
Codeshare flight, operated by Alaska Airlines.(AS 53)
Mon 21:29 Phoenix Sky Harbor (PHX) 3 23:44 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 9 (7M9) 3:15 Operates only on 2024-11-04
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon,Fri 21:29 Phoenix Sky Harbor (PHX) 3 23:44 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-800 (73H) 3:15 Effective 2024-11-08 through 2024-11-18
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon,Wed,Fri 21:40 Phoenix Sky Harbor (PHX) 3 23:59 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:19 Effective 2024-12-20 through 2025-01-03
Codeshare flight, operated by Alaska Airlines.(AS 619)
Fri 21:44 Phoenix Sky Harbor (PHX) 3 23:59 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-900 (739) 3:15 Effective 2024-12-06 through 2024-12-13
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon 21:44 Phoenix Sky Harbor (PHX) 3 23:59 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 (73J) 3:15 Operates only on 2024-12-09
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon 21:44 Phoenix Sky Harbor (PHX) 3 23:59 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 9 (7M9) 3:15 Operates only on 2024-12-16
Codeshare flight, operated by Alaska Airlines.(AS 619)
Fri 21:50 Phoenix Sky Harbor (PHX) 3 23:59 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737 MAX 8 (7M8) 3:09 Operates only on 2024-11-22
Codeshare flight, operated by Alaska Airlines.(AS 619)
Mon,Wed,Fri,Sat 21:50 Phoenix Sky Harbor (PHX) 3 23:59 Seattle-Tacoma (SEA)
Singapore Airlines SQ 1721 Non-stop Boeing 737-800 (73H) 3:09 Effective 2024-11-23 through 2024-12-02
Codeshare flight, operated by Alaska Airlines.(AS 619)


Singapore Airlines flights from Phoenix Sky Harbor (PHX) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:

Operates only on 2024-11-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 3:09, non-stop
Boeing 737 MAX 9 (7M9)

Operates only on 2024-11-09
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 3:09, non-stop
Boeing 737-900 (739)

Operates only on 2024-11-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 3:09, non-stop
Boeing 737-800 (73H)

Effective 2024-11-06 through 2024-11-20
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 3:09, non-stop
Boeing 737 MAX 9 (7M9)

Operates only on 2024-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 763)
Duration: 3:10, non-stop
Boeing 737-900 (739)

Operates only on 2024-12-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 763)
Duration: 3:15, non-stop
Boeing 737-800 (73H)

Effective 2024-12-07 through 2024-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 763)
Duration: 3:15, non-stop
Boeing 737 MAX 9 (7M9)

Operates only on 2024-12-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 763)
Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Operates only on 2024-12-18
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 763)
Duration: 3:15, non-stop
Boeing 737-900 (739)

Valid until 2024-09-28
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 763)
Duration: 3:04, non-stop
Boeing 737 (73J)

Effective 2025-03-10 through 2025-03-17
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 53)
Duration: 3:20, non-stop
Boeing 737 (73J)

Effective from 2025-03-19
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 611)
Duration: 3:00, non-stop
Boeing 737 (73J)

Effective 2024-12-21 through 2025-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 645)
Duration: 3:15, non-stop
Boeing 737 (73J)

Operates only on 2024-10-28
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:15, non-stop
Boeing 737 MAX 9 (7M9)

Operates only on 2024-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:15, non-stop
Boeing 737-900 (739)

Valid until 2024-09-02
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:02, non-stop
Boeing 737 (73J)

Operates only on 2024-09-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:02, non-stop
Boeing 737 MAX 9 (7M9)

Effective 2024-09-09 through 2024-09-23
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:02, non-stop
Boeing 737 (73J)

Operates only on 2024-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:02, non-stop
Boeing 737 MAX 9 (7M9)

Operates only on 2024-09-30
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:02, non-stop
Boeing 737 (73J)

Effective 2024-10-04 through 2024-10-21
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:09, non-stop
Boeing 737-800 (73H)

Operates only on 2024-10-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:09, non-stop
Boeing 737 MAX 8 (7M8)

Effective 2025-01-06 through 2025-03-08
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 53)
Duration: 3:20, non-stop
Boeing 737 (73J)

Operates only on 2024-11-04
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:15, non-stop
Boeing 737 MAX 9 (7M9)

Effective 2024-11-08 through 2024-11-18
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:15, non-stop
Boeing 737-800 (73H)

Effective 2024-12-20 through 2025-01-03
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:19, non-stop
Boeing 737 (73J)

Effective 2024-12-06 through 2024-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:15, non-stop
Boeing 737-900 (739)

Operates only on 2024-12-09
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:15, non-stop
Boeing 737 (73J)

Operates only on 2024-12-16
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:15, non-stop
Boeing 737 MAX 9 (7M9)

Operates only on 2024-11-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:09, non-stop
Boeing 737 MAX 8 (7M8)

Effective 2024-11-23 through 2024-12-02
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 619)
Duration: 3:09, non-stop
Boeing 737-800 (73H)
  • A domestic route departing from the Phoenix Sky Harbor airport (PHX) and arriving at Seattle-Tacoma airport (SEA).
  • The flight distance is 1106 miles, or 1781 km.
  • The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-8 . 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.
  • For direct flights, the flight time varies between 3:00 and 3:20.