Singapore Airlines flight SQ 1239: New York John F. Kennedy - Seattle-Tacoma

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 16:00 New York John F. Kennedy (JFK) 7 19:25 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:25 Effective from 2025-10-04
Codeshare flight, operated by Alaska Airlines.(AS 21)
Tue-Sat 16:30 New York John F. Kennedy (JFK) 8 19:41 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 MAX 9 (7M9) 6:11 Valid until 2025-05-03
Codeshare flight, operated by Alaska Airlines.(AS 31)
Mon-Thu,Sat,Sun 16:30 New York John F. Kennedy (JFK) 8 19:41 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 MAX 9 (7M9) 6:11 Effective 2025-05-04 through 2025-05-10
Codeshare flight, operated by Alaska Airlines.(AS 31)
Fri 16:30 New York John F. Kennedy (JFK) 8 19:41 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737-800 (73H) 6:11 Operates only on 2025-05-09
Codeshare flight, operated by Alaska Airlines.(AS 31)
Mon,Sun 16:30 New York John F. Kennedy (JFK) 8 19:41 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:11 Effective 2025-05-11 through 2025-05-12
Codeshare flight, operated by Alaska Airlines.(AS 31)
Tue,Wed 16:30 New York John F. Kennedy (JFK) 8 19:41 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 MAX 9 (7M9) 6:11 Effective 2025-05-13 through 2025-05-14
Codeshare flight, operated by Alaska Airlines.(AS 31)
Daily 16:40 New York John F. Kennedy (JFK) 7 19:55 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:15 Effective 2025-08-20 through 2025-10-03
Codeshare flight, operated by Alaska Airlines.(AS 31)
Thu,Sun 16:45 New York John F. Kennedy (JFK) 8 20:10 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 MAX 9 (7M9) 6:25 Effective 2025-06-12 through 2025-06-15
Codeshare flight, operated by Alaska Airlines.(AS 31)
Mon-Sat 16:45 New York John F. Kennedy (JFK) 8 20:10 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:25 Effective 2025-06-13 through 2025-06-21
Codeshare flight, operated by Alaska Airlines.(AS 31)
Mon-Thu,Sat,Sun 16:45 New York John F. Kennedy (JFK) 8 20:10 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:25 Effective 2025-06-22 through 2025-06-29
Codeshare flight, operated by Alaska Airlines.(AS 31)
Mon,Fri 16:45 New York John F. Kennedy (JFK) 8 20:10 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 MAX 9 (7M9) 6:25 Effective 2025-06-27 through 2025-07-04
Codeshare flight, operated by Alaska Airlines.(AS 31)
Mon-Thu,Sun 16:45 New York John F. Kennedy (JFK) 8 20:10 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:25 Effective 2025-07-01 through 2025-07-10
Codeshare flight, operated by Alaska Airlines.(AS 31)
Sat 16:45 New York John F. Kennedy (JFK) 8 20:10 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 MAX 9 (7M9) 6:25 Operates only on 2025-07-05
Codeshare flight, operated by Alaska Airlines.(AS 31)
Daily 16:45 New York John F. Kennedy (JFK) 8 20:10 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:25 Effective 2025-07-11 through 2025-08-19
Codeshare flight, operated by Alaska Airlines.(AS 31)
Mon,Wed-Sat 16:54 New York John F. Kennedy (JFK) 8 20:00 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:06 Effective 2025-05-15 through 2025-05-22
Codeshare flight, operated by Alaska Airlines.(AS 31)
Sun 16:54 New York John F. Kennedy (JFK) 8 20:00 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 MAX 9 (7M9) 6:06 Operates only on 2025-05-18
Codeshare flight, operated by Alaska Airlines.(AS 31)
Tue,Fri,Sat 16:54 New York John F. Kennedy (JFK) 8 20:00 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737-800 (73H) 6:06 Effective 2025-05-20 through 2025-05-24
Codeshare flight, operated by Alaska Airlines.(AS 31)
Mon,Tue,Sun 16:54 New York John F. Kennedy (JFK) 8 20:00 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:06 Effective 2025-05-25 through 2025-06-02
Codeshare flight, operated by Alaska Airlines.(AS 31)
Tue,Wed,Fri,Sat 16:54 New York John F. Kennedy (JFK) 8 20:00 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737-800 (73H) 6:06 Effective 2025-05-28 through 2025-06-03
Codeshare flight, operated by Alaska Airlines.(AS 31)
Thu 16:54 New York John F. Kennedy (JFK) 8 20:00 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 MAX 9 (7M9) 6:06 Operates only on 2025-05-29
Codeshare flight, operated by Alaska Airlines.(AS 31)
Mon,Wed-Fri,Sun 16:54 New York John F. Kennedy (JFK) 8 20:00 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737 (73J) 6:06 Effective 2025-06-04 through 2025-06-11
Codeshare flight, operated by Alaska Airlines.(AS 31)
Tue,Sat 16:54 New York John F. Kennedy (JFK) 8 20:00 Seattle-Tacoma (SEA)
SQ 1239 Non-stop Boeing 737-800 (73H) 6:06 Effective 2025-06-07 through 2025-06-10
Codeshare flight, operated by Alaska Airlines.(AS 31)
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Singapore Airlines flight SQ 1239:
New York John F. Kennedy - Seattle-Tacoma
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:

Singapore Airlines SQ1239
Effective from 2025-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 21)
Duration: 6:25, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Valid until 2025-05-03
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:11, non-stop
Boeing 737 MAX 9 (7M9)

Singapore Airlines SQ1239
Effective 2025-05-04 through 2025-05-10
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:11, non-stop
Boeing 737 MAX 9 (7M9)

Singapore Airlines SQ1239
Operates only on 2025-05-09
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:11, non-stop
Boeing 737-800 (73H)

Singapore Airlines SQ1239
Effective 2025-05-11 through 2025-05-12
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:11, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Effective 2025-05-13 through 2025-05-14
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:11, non-stop
Boeing 737 MAX 9 (7M9)

Singapore Airlines SQ1239
Effective 2025-08-20 through 2025-10-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:15, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Effective 2025-06-12 through 2025-06-15
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:25, non-stop
Boeing 737 MAX 9 (7M9)

Singapore Airlines SQ1239
Effective 2025-06-13 through 2025-06-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:25, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Effective 2025-06-22 through 2025-06-29
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:25, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Effective 2025-06-27 through 2025-07-04
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:25, non-stop
Boeing 737 MAX 9 (7M9)

Singapore Airlines SQ1239
Effective 2025-07-01 through 2025-07-10
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:25, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Operates only on 2025-07-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:25, non-stop
Boeing 737 MAX 9 (7M9)

Singapore Airlines SQ1239
Effective 2025-07-11 through 2025-08-19
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:25, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Effective 2025-05-15 through 2025-05-22
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:06, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Operates only on 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:06, non-stop
Boeing 737 MAX 9 (7M9)

Singapore Airlines SQ1239
Effective 2025-05-20 through 2025-05-24
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:06, non-stop
Boeing 737-800 (73H)

Singapore Airlines SQ1239
Effective 2025-05-25 through 2025-06-02
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:06, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Effective 2025-05-28 through 2025-06-03
Mon
-
Tue
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:06, non-stop
Boeing 737-800 (73H)

Singapore Airlines SQ1239
Operates only on 2025-05-29
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:06, non-stop
Boeing 737 MAX 9 (7M9)

Singapore Airlines SQ1239
Effective 2025-06-04 through 2025-06-11
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:06, non-stop
Boeing 737 (73J)

Singapore Airlines SQ1239
Effective 2025-06-07 through 2025-06-10
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 31)
Duration: 6:06, non-stop
Boeing 737-800 (73H)
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  • SQ 1239 is a domestic flight departing from the New York John F. Kennedy airport (JFK) and arriving at Seattle-Tacoma airport (SEA).
  • The flight distance is 2414 miles, or 3884 km.
  • The timezone of the departure airport is UTC-5 , 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 6:06 and 6:25.