Singapore Airlines
flight
SQ 1234:
Seattle-Tacoma - Dulles, Washington
Seattle-Tacoma - Dulles, Washington
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
FLIGHT SCHEDULE
Direct Codeshare Flights:
Singapore Airlines SQ1234
Effective from 2025-11-02
Mon
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Wed
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Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 406)
Duration: 5:00, non-stop Boeing 737 (73J)
Singapore Airlines SQ1234
Valid until 2025-05-03
Mon
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Codeshare flight, operated by Alaska Airlines.
(AS 414)
Duration: 5:07, non-stop Boeing 737-800 (73H)
Singapore Airlines SQ1234
Operates only on 2025-05-10
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Sun
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Codeshare flight, operated by Alaska Airlines.
(AS 414)
Duration: 5:07, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Effective 2025-08-21 through 2025-10-03
Mon
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Tue
Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:03, non-stop Boeing 737 (73J)
Singapore Airlines SQ1234
Effective 2025-06-12 through 2025-06-26
Mon
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Tue
Wed
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Thu
Fri
Sat
Sun
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Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 (73J)
Singapore Airlines SQ1234
Effective 2025-06-15 through 2025-06-22
Mon
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Tue
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Wed
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Fri
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Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Effective 2025-06-27 through 2025-07-06
Mon
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Tue
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Wed
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Thu
Fri
Sat
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Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Effective 2025-06-28 through 2025-07-05
Mon
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Tue
Wed
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Thu
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Fri
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Sat
Sun
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Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 (73J)
Singapore Airlines SQ1234
Effective 2025-07-08 through 2025-07-10
Mon
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Tue
Wed
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Thu
Fri
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Sat
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Sun
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Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Effective 2025-07-11 through 2025-07-19
Mon
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Tue
Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 (73J)
Singapore Airlines SQ1234
Effective 2025-07-20 through 2025-07-27
Mon
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Tue
Wed
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Thu
Fri
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Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Effective 2025-07-25 through 2025-08-01
Mon
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Tue
Wed
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Thu
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Fri
Sat
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Sun
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Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 (73J)
Singapore Airlines SQ1234
Effective 2025-07-31 through 2025-08-07
Mon
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Tue
Wed
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Thu
Fri
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Sat
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Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Effective 2025-08-02 through 2025-08-08
Mon
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Tue
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Wed
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Thu
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Fri
Sat
Sun
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Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 (73J)
Singapore Airlines SQ1234
Effective 2025-08-09 through 2025-08-19
Mon
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Tue
Wed
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Thu
Fri
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Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Operates only on 2025-08-15
Mon
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Tue
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Wed
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Thu
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Fri
Sat
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Sun
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Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 5:00, non-stop Boeing 737 (73J)
Singapore Airlines SQ1234
Valid until 2025-05-13
Mon
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Tue
Wed
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Thu
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Fri
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Sat
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Sun
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Codeshare flight, operated by Alaska Airlines.
(AS 345)
Duration: 4:58, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Effective 2025-05-15 through 2025-05-29
Mon
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Tue
Wed
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Thu
Fri
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Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 406)
Duration: 4:59, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Effective 2025-05-30 through 2025-06-10
Mon
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Tue
Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 406)
Duration: 4:59, non-stop Boeing 737 MAX 9 (7M9)
Singapore Airlines SQ1234
Effective 2025-10-04 through 2025-11-01
Mon
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Tue
Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 4:49, non-stop Boeing 737 (73J)
Singapore Airlines SQ1234
Valid until 2025-05-01
Mon
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Wed
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Thu
Fri
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Sat
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Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 4:59, non-stop Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
Singapore Airlines SQ1234
Operates only on 2025-05-04
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
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Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 4:59, non-stop Boeing 737 (73J)
The flight arrives 1 day after departure.
Singapore Airlines SQ1234
Effective 2025-05-08 through 2025-05-11
Mon
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Tue
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Wed
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Thu
Fri
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Sat
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Sun
Codeshare flight, operated by Alaska Airlines.
(AS 348)
Duration: 4:59, non-stop Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
Ad mobi box here (300x250px) 8888825773 M FlightWNum Bottom Box
Parallax here SEA-IAD
- SQ 1234 is a domestic flight departing from the Seattle-Tacoma airport (SEA) and arriving at Dulles, Washington airport (IAD).
- The flight distance is 2299 miles, or 3699 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.
- For direct flights, the flight time varies between 4:49 and 5:07.