Korean Air flight KE 3634: Atlanta - Denver

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Sat,Sun 19:48 Atlanta (ATL) S 21:14 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:26 Effective 2026-02-14 through 2026-02-21
Codeshare flight, operated by Delta Air Lines.(DL 746)
Sat 19:48 Atlanta (ATL) S 21:14 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:26 Effective 2026-02-28 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 746)
Mon-Fri,Sun 20:55 Atlanta (ATL) S 22:18 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:23 Effective 2026-03-29 through 2026-04-30
Codeshare flight, operated by Delta Air Lines.(DL 493)
Mon,Thu,Fri,Sun 20:55 Atlanta (ATL) S 22:14 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:19 Effective 2026-10-01 through 2026-10-05
Codeshare flight, operated by Delta Air Lines.(DL 493)
Mon-Fri,Sun 20:55 Atlanta (ATL) S 22:17 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:22 Effective 2026-10-06 through 2026-10-23
Codeshare flight, operated by Delta Air Lines.(DL 493)
Mon-Thu 21:25 Atlanta (ATL) S 22:50 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:25 Effective 2026-01-19 through 2026-01-29
Codeshare flight, operated by Delta Air Lines.(DL 493)
Fri,Sun 21:25 Atlanta (ATL) S 22:50 Denver (DEN)
KE 3634 Non-stop Boeing 737-900 (739) 3:25 Effective 2026-01-23 through 2026-01-25
Codeshare flight, operated by Delta Air Lines.(DL 493)
Mon-Fri,Sun 21:25 Atlanta (ATL) S 22:50 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:25 Effective 2026-01-30 through 2026-02-06
Codeshare flight, operated by Delta Air Lines.(DL 493)
Mon-Wed 21:25 Atlanta (ATL) S 22:50 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:25 Effective 2026-02-09 through 2026-02-11
Codeshare flight, operated by Delta Air Lines.(DL 493)
Mon-Fri 21:25 Atlanta (ATL) S 22:48 Denver (DEN)
KE 3634 Non-stop Boeing 737-900 (739) 3:23 Effective 2026-02-12 through 2026-02-20
Codeshare flight, operated by Delta Air Lines.(DL 956)
Mon-Fri,Sun 21:25 Atlanta (ATL) S 22:48 Denver (DEN)
KE 3634 Non-stop Boeing 737-900 (739) 3:23 Effective 2026-02-22 through 2026-03-06
Codeshare flight, operated by Delta Air Lines.(DL 956)
Mon 21:31 Atlanta (ATL) S 22:55 Denver (DEN)
KE 3634 Non-stop Airbus A320 (320) 3:24 Operates only on 2026-01-05
Codeshare flight, operated by Delta Air Lines.(DL 956)
Daily 21:31 Atlanta (ATL) S 22:55 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:24 Effective 2026-01-06 through 2026-01-18
Codeshare flight, operated by Delta Air Lines.(DL 956)
Sat 22:25 Atlanta (ATL) S 23:51 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:26 Effective 2026-04-18 through 2026-04-25
Codeshare flight, operated by Delta Air Lines.(DL 956)
Daily 22:25 Atlanta (ATL) S 23:51 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:26 Effective 2026-05-01 through 2026-06-06
Codeshare flight, operated by Delta Air Lines.(DL 956)
Daily 22:25 Atlanta (ATL) S 23:45 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:20 Effective 2026-06-07 through 2026-09-30
Codeshare flight, operated by Delta Air Lines.(DL 956)
Sat 22:25 Atlanta (ATL) S 23:45 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:20 Operates only on 2026-10-03
Codeshare flight, operated by Delta Air Lines.(DL 956)
Sat 22:25 Atlanta (ATL) S 23:49 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:24 Effective 2026-10-10 through 2026-10-24
Codeshare flight, operated by Delta Air Lines.(DL 956)
Daily 22:25 Atlanta (ATL) S 23:49 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:24 Effective from 2026-10-25
Codeshare flight, operated by Delta Air Lines.(DL 956)
Fri,Sat 22:40 Atlanta (ATL) S 00:03 Denver (DEN)
KE 3634 Non-stop Boeing 757 (757) 3:23 Effective 2026-01-02 through 2026-01-03
Codeshare flight, operated by Delta Air Lines.(DL 956)
The flight arrives 1 day after departure.
Sun 22:40 Atlanta (ATL) S 00:07 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:27 Operates only on 2026-01-04
Codeshare flight, operated by Delta Air Lines.(DL 956)
The flight arrives 1 day after departure.
Daily 22:40 Atlanta (ATL) S 00:09 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:29 Effective 2026-03-08 through 2026-03-28
Codeshare flight, operated by Delta Air Lines.(DL 956)
The flight arrives 1 day after departure.
Sat 22:40 Atlanta (ATL) S 00:09 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:29 Effective 2026-04-04 through 2026-04-11
Codeshare flight, operated by Delta Air Lines.(DL 956)
The flight arrives 1 day after departure.
Sat 22:59 Atlanta (ATL) S 00:28 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:29 Effective 2026-01-24 through 2026-02-07
Codeshare flight, operated by Delta Air Lines.(DL 956)
The flight arrives 1 day after departure.
Sun 22:59 Atlanta (ATL) S 00:28 Denver (DEN)
KE 3634 Non-stop Airbus A321 (321) 3:29 Operates only on 2026-02-08
Codeshare flight, operated by Delta Air Lines.(DL 956)
The flight arrives 1 day after departure.
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Korean Air flight KE 3634:
Atlanta - Denver
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Korean Air KE3634
19:48
Atlanta (ATL) S

21:14
Denver (DEN)
Effective 2026-02-14 through 2026-02-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 746)
Duration: 3:26, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
19:48
Atlanta (ATL) S

21:14
Denver (DEN)
Effective 2026-02-28 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 746)
Duration: 3:26, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
20:55
Atlanta (ATL) S

22:18
Denver (DEN)
Effective 2026-03-29 through 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 493)
Duration: 3:23, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
20:55
Atlanta (ATL) S

22:14
Denver (DEN)
Effective 2026-10-01 through 2026-10-05
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 493)
Duration: 3:19, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
20:55
Atlanta (ATL) S

22:17
Denver (DEN)
Effective 2026-10-06 through 2026-10-23
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 493)
Duration: 3:22, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
21:25
Atlanta (ATL) S

22:50
Denver (DEN)
Effective 2026-01-19 through 2026-01-29
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 493)
Duration: 3:25, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
21:25
Atlanta (ATL) S

22:50
Denver (DEN)
Effective 2026-01-23 through 2026-01-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 493)
Duration: 3:25, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Korean Air KE3634
21:25
Atlanta (ATL) S

22:50
Denver (DEN)
Effective 2026-01-30 through 2026-02-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 493)
Duration: 3:25, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
21:25
Atlanta (ATL) S

22:50
Denver (DEN)
Effective 2026-02-09 through 2026-02-11
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 493)
Duration: 3:25, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
21:25
Atlanta (ATL) S

22:48
Denver (DEN)
Effective 2026-02-12 through 2026-02-20
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:23, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Korean Air KE3634
21:25
Atlanta (ATL) S

22:48
Denver (DEN)
Effective 2026-02-22 through 2026-03-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:23, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Korean Air KE3634
21:31
Atlanta (ATL) S

22:55
Denver (DEN)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:24, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Korean Air KE3634
21:31
Atlanta (ATL) S

22:55
Denver (DEN)
Effective 2026-01-06 through 2026-01-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:24, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
22:25
Atlanta (ATL) S

23:51
Denver (DEN)
Effective 2026-04-18 through 2026-04-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:26, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
22:25
Atlanta (ATL) S

23:51
Denver (DEN)
Effective 2026-05-01 through 2026-06-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:26, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
22:25
Atlanta (ATL) S

23:45
Denver (DEN)
Effective 2026-06-07 through 2026-09-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:20, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
22:25
Atlanta (ATL) S

23:45
Denver (DEN)
Operates only on 2026-10-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:20, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
22:25
Atlanta (ATL) S

23:49
Denver (DEN)
Effective 2026-10-10 through 2026-10-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:24, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
22:25
Atlanta (ATL) S

23:49
Denver (DEN)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:24, non-stop
Airbus A321 (321)
Direct Codeshare Flights:
Korean Air KE3634
22:40
Atlanta (ATL) S

00:03(+1)
Denver (DEN)
Effective 2026-01-02 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:23, non-stop
Boeing 757 (757)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Korean Air KE3634
22:40
Atlanta (ATL) S

00:07(+1)
Denver (DEN)
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:27, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Korean Air KE3634
22:40
Atlanta (ATL) S

00:09(+1)
Denver (DEN)
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:29, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Korean Air KE3634
22:40
Atlanta (ATL) S

00:09(+1)
Denver (DEN)
Effective 2026-04-04 through 2026-04-11
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:29, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Korean Air KE3634
22:59
Atlanta (ATL) S

00:28(+1)
Denver (DEN)
Effective 2026-01-24 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:29, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Korean Air KE3634
22:59
Atlanta (ATL) S

00:28(+1)
Denver (DEN)
Operates only on 2026-02-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 956)
Duration: 3:29, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.
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  • KE 3634 is a domestic flight departing from the Atlanta airport (ATL) and arriving at Denver airport (DEN).
  • The flight distance is 1196 miles, or 1925 km.
  • The timezone of the departure airport is UTC-5 , 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 3:19 and 3:29.
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