Korean Air
flight
KE 6121:
Seattle-Tacoma - Denver
Seattle-Tacoma - Denver
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
FLIGHT SCHEDULE
Direct Codeshare Flights:
Korean Air KE6121
Valid until 2026-01-06
Mon
Tue
Wed
Thu
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Fri
Sat
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Sun
Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:42, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Valid until 2026-01-03
Mon
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Tue
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Wed
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Fri
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Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:42, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-02-12 through 2026-03-02
Mon
Tue
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Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 651)
Duration: 2:40, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Operates only on 2026-03-05
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
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Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:40, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-03-06 through 2026-03-13
Mon
Tue
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-
Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 651)
Duration: 2:40, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-03-14 through 2026-03-16
Mon
Tue
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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 602)
Duration: 2:40, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Korean Air KE6121
Operates only on 2026-03-15
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 651)
Duration: 2:40, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Operates only on 2026-03-18
Mon
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Tue
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Wed
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 602)
Duration: 2:44, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-03-19 through 2026-05-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:39, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-06-10 through 2026-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:50, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective from 2026-08-19
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:50, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-02-17 through 2026-03-17
Mon
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Tue
Wed
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 612)
Duration: 2:43, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-05-13 through 2026-06-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 524)
Duration: 2:43, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-01-07 through 2026-01-15
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:41, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-01-10 through 2026-01-17
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 602)
Duration: 2:41, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-01-18 through 2026-01-24
Mon
-
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:41, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-01-19 through 2026-01-25
Mon
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 602)
Duration: 2:41, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-01-26 through 2026-02-01
Mon
Tue
Wed
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-
Thu
Fri
Sat
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-
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:41, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-01-28 through 2026-02-02
Mon
Tue
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-
Wed
Thu
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Fri
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Sat
Sun
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Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:41, non-stop Boeing 737 (73J)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-02-03 through 2026-02-10
Mon
-
-
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:41, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Korean Air KE6121
Effective 2026-02-07 through 2026-02-11
Mon
Tue
-
-
Wed
Thu
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-
Fri
-
-
Sat
Sun
-
-
Codeshare flight, operated by Alaska Airlines.
(AS 602)
Duration: 2:41, non-stop Boeing 737 (73J)
Ad mobi box here (300x250px) 8888825773 M FlightWNum Bottom Box
Parallax here SEA-DEN
- KE 6121 is a domestic flight departing from the Seattle-Tacoma airport (SEA) and arriving at Denver airport (DEN).
- The flight distance is 1022 miles, or 1644 km.
- The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-7 . 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 2:39 and 2:50.