Korean Air flights from Seattle-Tacoma (SEA) to Denver (DEN).

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Tue,Fri-Sun 13:35 Seattle-Tacoma (SEA) 17:14 Denver (DEN)
Korean Air KE 3013 Non-stop Airbus A220-100 (221) 2:39 Valid until 2026-01-04
Codeshare flight, operated by Delta Air Lines.(DL 2759)
Daily 13:35 Seattle-Tacoma (SEA) 17:28 Denver (DEN)
Korean Air KE 3013 Non-stop Embraer EMB 175 (E7W) 2:53 Effective 2026-03-08 through 2026-03-14
Codeshare flight, operated by Delta Air Lines.(DL 4026)
Daily 13:35 Seattle-Tacoma (SEA) 17:29 Denver (DEN)
Korean Air KE 3013 Non-stop Embraer EMB 175 (E7W) 2:54 Effective 2026-03-15 through 2026-04-12
Codeshare flight, operated by Delta Air Lines.(DL 4026)
Daily 13:40 Seattle-Tacoma (SEA) 17:27 Denver (DEN)
Korean Air KE 3013 Non-stop Embraer EMB 175 (E7W) 2:47 Effective 2026-02-12 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 4026)
Daily 13:45 Seattle-Tacoma (SEA) 17:34 Denver (DEN)
Korean Air KE 3013 Non-stop Embraer EMB 175 (E7W) 2:49 Effective 2026-01-05 through 2026-02-11
Codeshare flight, operated by Delta Air Lines.(DL 4026)
Daily 13:50 Seattle-Tacoma (SEA) 17:40 Denver (DEN)
Korean Air KE 3013 Non-stop Embraer EMB 175 (E7W) 2:50 Effective 2026-04-13 through 2026-05-06
Codeshare flight, operated by Delta Air Lines.(DL 4026)
Daily 13:50 Seattle-Tacoma (SEA) 17:38 Denver (DEN)
Korean Air KE 3013 Non-stop Airbus A220-100 (221) 2:48 Effective 2026-05-07 through 2026-10-05
Codeshare flight, operated by Delta Air Lines.(DL 2759)
Daily 13:50 Seattle-Tacoma (SEA) 17:35 Denver (DEN)
Korean Air KE 3013 Non-stop Airbus A220-100 (221) 2:45 Effective from 2026-10-06
Codeshare flight, operated by Delta Air Lines.(DL 2759)
Mon-Fri,Sun 19:35 Seattle-Tacoma (SEA) 23:23 Denver (DEN)
Korean Air KE 3495 Non-stop Airbus A220-300 (223) 2:48 Valid until 2026-01-04
Codeshare flight, operated by Delta Air Lines.(DL 2851)
Sat 19:35 Seattle-Tacoma (SEA) 23:23 Denver (DEN)
Korean Air KE 3495 Non-stop Airbus A220-100 (221) 2:48 Operates only on 2026-01-03
Codeshare flight, operated by Delta Air Lines.(DL 2851)
Daily 19:40 Seattle-Tacoma (SEA) 23:25 Denver (DEN)
Korean Air KE 3495 Non-stop Airbus A220-300 (223) 2:45 Effective 2026-01-05 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 2851)
Daily 19:40 Seattle-Tacoma (SEA) 23:30 Denver (DEN)
Korean Air KE 3495 Non-stop Airbus A220-300 (223) 2:50 Effective 2026-04-13 through 2026-10-05
Codeshare flight, operated by Delta Air Lines.(DL 2851)
Daily 19:40 Seattle-Tacoma (SEA) 23:28 Denver (DEN)
Korean Air KE 3495 Non-stop Airbus A220-300 (223) 2:48 Effective from 2026-10-06
Codeshare flight, operated by Delta Air Lines.(DL 2851)
Daily 19:45 Seattle-Tacoma (SEA) 23:30 Denver (DEN)
Korean Air KE 3495 Non-stop Airbus A220-300 (223) 2:45 Effective 2026-03-08 through 2026-03-14
Codeshare flight, operated by Delta Air Lines.(DL 2851)
Daily 19:45 Seattle-Tacoma (SEA) 23:31 Denver (DEN)
Korean Air KE 3495 Non-stop Airbus A220-300 (223) 2:46 Effective 2026-03-15 through 2026-04-12
Codeshare flight, operated by Delta Air Lines.(DL 2851)
Mon-Wed,Fri,Sun 14:10 Seattle-Tacoma (SEA) 17:52 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:42 Valid until 2026-01-06
Codeshare flight, operated by Alaska Airlines.(AS 602)
Thu,Sat 14:10 Seattle-Tacoma (SEA) 17:52 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 MAX 9 (7M9) 2:42 Valid until 2026-01-03
Codeshare flight, operated by Alaska Airlines.(AS 602)
Mon,Thu-Sun 15:16 Seattle-Tacoma (SEA) 18:56 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:40 Effective 2026-02-12 through 2026-03-02
Codeshare flight, operated by Alaska Airlines.(AS 651)
Thu 15:16 Seattle-Tacoma (SEA) 18:56 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 MAX 9 (7M9) 2:40 Operates only on 2026-03-05
Codeshare flight, operated by Alaska Airlines.(AS 602)
Mon,Thu-Sun 15:16 Seattle-Tacoma (SEA) 18:56 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:40 Effective 2026-03-06 through 2026-03-13
Codeshare flight, operated by Alaska Airlines.(AS 651)
Mon,Sat 15:16 Seattle-Tacoma (SEA) 18:56 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 MAX 9 (7M9) 2:40 Effective 2026-03-14 through 2026-03-16
Codeshare flight, operated by Alaska Airlines.(AS 602)
Sun 15:16 Seattle-Tacoma (SEA) 18:56 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:40 Operates only on 2026-03-15
Codeshare flight, operated by Alaska Airlines.(AS 651)
Wed 15:35 Seattle-Tacoma (SEA) 19:19 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:44 Operates only on 2026-03-18
Codeshare flight, operated by Alaska Airlines.(AS 602)
Daily 15:35 Seattle-Tacoma (SEA) 19:14 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:39 Effective 2026-03-19 through 2026-05-12
Codeshare flight, operated by Alaska Airlines.(AS 602)
Daily 15:49 Seattle-Tacoma (SEA) 19:39 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:50 Effective 2026-06-10 through 2026-08-18
Codeshare flight, operated by Alaska Airlines.(AS 602)
Daily 16:40 Seattle-Tacoma (SEA) 20:30 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:50 Effective from 2026-08-19
Codeshare flight, operated by Alaska Airlines.(AS 602)
Tue,Wed 17:40 Seattle-Tacoma (SEA) 21:23 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:43 Effective 2026-02-17 through 2026-03-17
Codeshare flight, operated by Alaska Airlines.(AS 612)
Daily 17:55 Seattle-Tacoma (SEA) 21:38 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:43 Effective 2026-05-13 through 2026-06-09
Codeshare flight, operated by Alaska Airlines.(AS 524)
Mon-Fri,Sun 19:54 Seattle-Tacoma (SEA) 23:35 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 MAX 9 (7M9) 2:41 Effective 2026-01-07 through 2026-01-15
Codeshare flight, operated by Alaska Airlines.(AS 602)
Fri,Sat 19:54 Seattle-Tacoma (SEA) 23:35 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:41 Effective 2026-01-10 through 2026-01-17
Codeshare flight, operated by Alaska Airlines.(AS 602)
Tue-Sun 19:54 Seattle-Tacoma (SEA) 23:35 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 MAX 9 (7M9) 2:41 Effective 2026-01-18 through 2026-01-24
Codeshare flight, operated by Alaska Airlines.(AS 602)
Mon,Sun 19:54 Seattle-Tacoma (SEA) 23:35 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:41 Effective 2026-01-19 through 2026-01-25
Codeshare flight, operated by Alaska Airlines.(AS 602)
Mon,Tue,Thu,Fri,Sun 19:54 Seattle-Tacoma (SEA) 23:35 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 MAX 9 (7M9) 2:41 Effective 2026-01-26 through 2026-02-01
Codeshare flight, operated by Alaska Airlines.(AS 602)
Mon,Wed,Sat 19:54 Seattle-Tacoma (SEA) 23:35 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:41 Effective 2026-01-28 through 2026-02-02
Codeshare flight, operated by Alaska Airlines.(AS 602)
Tue-Fri,Sun 19:54 Seattle-Tacoma (SEA) 23:35 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 MAX 9 (7M9) 2:41 Effective 2026-02-03 through 2026-02-10
Codeshare flight, operated by Alaska Airlines.(AS 602)
Mon,Wed,Sat 19:54 Seattle-Tacoma (SEA) 23:35 Denver (DEN)
Korean Air KE 6121 Non-stop Boeing 737 (73J) 2:41 Effective 2026-02-07 through 2026-02-11
Codeshare flight, operated by Alaska Airlines.(AS 602)


Korean Air flights from Seattle-Tacoma (SEA) to Denver (DEN).
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:

Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2759)
Duration: 2:39, non-stop
Airbus A220-100 (221)

Direct Codeshare Flights:

Effective 2026-03-08 through 2026-03-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4026)
Duration: 2:53, non-stop
Embraer EMB 175 (E7W)

Direct Codeshare Flights:

Effective 2026-03-15 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4026)
Duration: 2:54, non-stop
Embraer EMB 175 (E7W)

Direct Codeshare Flights:

Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4026)
Duration: 2:47, non-stop
Embraer EMB 175 (E7W)

Direct Codeshare Flights:

Effective 2026-01-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4026)
Duration: 2:49, non-stop
Embraer EMB 175 (E7W)

Direct Codeshare Flights:

Effective 2026-04-13 through 2026-05-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4026)
Duration: 2:50, non-stop
Embraer EMB 175 (E7W)

Direct Codeshare Flights:

Effective 2026-05-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2759)
Duration: 2:48, non-stop
Airbus A220-100 (221)

Direct Codeshare Flights:

Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2759)
Duration: 2:45, non-stop
Airbus A220-100 (221)

Direct Codeshare Flights:

Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2851)
Duration: 2:48, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2851)
Duration: 2:48, non-stop
Airbus A220-100 (221)

Direct Codeshare Flights:

Effective 2026-01-05 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2851)
Duration: 2:45, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2851)
Duration: 2:50, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2851)
Duration: 2:48, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Effective 2026-03-08 through 2026-03-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2851)
Duration: 2:45, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Effective 2026-03-15 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2851)
Duration: 2:46, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Valid until 2026-01-06
Mon
Tue
Wed
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 2:42, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 2:42, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

Effective 2026-02-12 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 651)
Duration: 2:40, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

Operates only on 2026-03-05
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 2:40, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

Effective 2026-03-06 through 2026-03-13
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by Alaska Airlines. (AS 651)
Duration: 2:40, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

Effective 2026-03-14 through 2026-03-16
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 2:40, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

Operates only on 2026-03-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 651)
Duration: 2:40, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

Operates only on 2026-03-18
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 2:44, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

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:

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:

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:

Effective 2026-02-17 through 2026-03-17
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 612)
Duration: 2:43, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

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:

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:

Effective 2026-01-10 through 2026-01-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 2:41, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

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:

Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 2:41, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

Effective 2026-01-26 through 2026-02-01
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:

Effective 2026-01-28 through 2026-02-02
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 2:41, non-stop
Boeing 737 (73J)

Direct Codeshare Flights:

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:

Effective 2026-02-07 through 2026-02-11
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Alaska Airlines. (AS 602)
Duration: 2:41, non-stop
Boeing 737 (73J)
  • A domestic route 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 2:54.