Korean Air flight KE 3666: Atlanta - Buffalo

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Select flight date:  Show Calendar
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 12:30 Atlanta (ATL) S 14:30 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:00 Effective 2025-09-08 through 2025-11-05
Codeshare flight, operated by Delta Air Lines.(DL 2266)
Mon-Fri,Sun 13:40 Atlanta (ATL) S 15:42 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:02 Effective 2025-07-07 through 2025-08-29
Codeshare flight, operated by Delta Air Lines.(DL 2266)
Mon-Fri,Sun 13:40 Atlanta (ATL) S 15:42 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:02 Effective 2025-09-01 through 2025-09-07
Codeshare flight, operated by Delta Air Lines.(DL 2266)
Sat 14:00 Atlanta (ATL) S 16:02 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:02 Effective 2025-07-12 through 2025-08-09
Codeshare flight, operated by Delta Air Lines.(DL 2266)
Sat 14:00 Atlanta (ATL) S 16:05 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:05 Effective 2025-08-16 through 2025-08-30
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Sat,Sun 14:00 Atlanta (ATL) S 16:05 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:05 Effective 2025-08-31 through 2025-09-06
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Mon,Tue,Thu-Sun 14:01 Atlanta (ATL) S 16:04 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:03 Effective 2025-06-08 through 2025-07-06
Codeshare flight, operated by Delta Air Lines.(DL 2266)
Wed 14:01 Atlanta (ATL) S 16:04 Buffalo (BUF)
KE 3666 Non-stop Boeing 737-900 (739) 2:03 Effective 2025-06-11 through 2025-07-02
Codeshare flight, operated by Delta Air Lines.(DL 2266)
Mon-Fri,Sun 15:29 Atlanta (ATL) S 17:28 Buffalo (BUF)
KE 3666 Non-stop Boeing 757 (757) 1:59 Effective 2025-05-07 through 2025-05-19
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Mon-Fri 15:29 Atlanta (ATL) S 17:30 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:01 Effective 2025-05-20 through 2025-05-30
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Mon-Fri,Sun 15:29 Atlanta (ATL) S 17:30 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:01 Effective 2025-06-01 through 2025-06-06
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Daily 15:32 Atlanta (ATL) S 17:33 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:01 Effective 2025-11-06 through 2025-12-19
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Daily 15:32 Atlanta (ATL) S 17:35 Buffalo (BUF)
KE 3666 Non-stop Airbus A320 (320) 2:03 Effective from 2026-01-06
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Daily 15:40 Atlanta (ATL) S 17:40 Buffalo (BUF)
KE 3666 Non-stop Boeing 737-900 (739) 2:00 Valid until 2025-05-06
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Sat 15:49 Atlanta (ATL) S 17:49 Buffalo (BUF)
KE 3666 Non-stop Boeing 757 (757) 2:00 Effective 2025-05-10 through 2025-05-17
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Sat 15:49 Atlanta (ATL) S 17:50 Buffalo (BUF)
KE 3666 Non-stop Airbus A321 (321) 2:01 Effective 2025-05-24 through 2025-06-07
Codeshare flight, operated by Delta Air Lines.(DL 2050)
Daily 15:50 Atlanta (ATL) S 17:50 Buffalo (BUF)
KE 3666 Non-stop Boeing 737-900 (739) 2:00 Effective 2025-12-20 through 2026-01-05
Codeshare flight, operated by Delta Air Lines.(DL 2050)
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Korean Air flight KE 3666:
Atlanta - Buffalo
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Select flight date:  Show Calendar
FLIGHT SCHEDULE
Direct Codeshare Flights:
Korean Air KE3666
12:30
Atlanta (ATL) S

14:30
Buffalo (BUF)
Effective 2025-09-08 through 2025-11-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2266)
Duration: 2:00, non-stop
Airbus A321 (321)
Korean Air KE3666
13:40
Atlanta (ATL) S

15:42
Buffalo (BUF)
Effective 2025-07-07 through 2025-08-29
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2266)
Duration: 2:02, non-stop
Airbus A321 (321)
Korean Air KE3666
13:40
Atlanta (ATL) S

15:42
Buffalo (BUF)
Effective 2025-09-01 through 2025-09-07
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2266)
Duration: 2:02, non-stop
Airbus A321 (321)
Korean Air KE3666
14:00
Atlanta (ATL) S

16:02
Buffalo (BUF)
Effective 2025-07-12 through 2025-08-09
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2266)
Duration: 2:02, non-stop
Airbus A321 (321)
Korean Air KE3666
14:00
Atlanta (ATL) S

16:05
Buffalo (BUF)
Effective 2025-08-16 through 2025-08-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:05, non-stop
Airbus A321 (321)
Korean Air KE3666
14:00
Atlanta (ATL) S

16:05
Buffalo (BUF)
Effective 2025-08-31 through 2025-09-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:05, non-stop
Airbus A321 (321)
Korean Air KE3666
14:01
Atlanta (ATL) S

16:04
Buffalo (BUF)
Effective 2025-06-08 through 2025-07-06
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2266)
Duration: 2:03, non-stop
Airbus A321 (321)
Korean Air KE3666
14:01
Atlanta (ATL) S

16:04
Buffalo (BUF)
Effective 2025-06-11 through 2025-07-02
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2266)
Duration: 2:03, non-stop
Boeing 737-900 (739)
Korean Air KE3666
15:29
Atlanta (ATL) S

17:28
Buffalo (BUF)
Effective 2025-05-07 through 2025-05-19
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 1:59, non-stop
Boeing 757 (757)
Korean Air KE3666
15:29
Atlanta (ATL) S

17:30
Buffalo (BUF)
Effective 2025-05-20 through 2025-05-30
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:01, non-stop
Airbus A321 (321)
Korean Air KE3666
15:29
Atlanta (ATL) S

17:30
Buffalo (BUF)
Effective 2025-06-01 through 2025-06-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:01, non-stop
Airbus A321 (321)
Korean Air KE3666
15:32
Atlanta (ATL) S

17:33
Buffalo (BUF)
Effective 2025-11-06 through 2025-12-19
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:01, non-stop
Airbus A321 (321)
Korean Air KE3666
15:32
Atlanta (ATL) S

17:35
Buffalo (BUF)
Effective from 2026-01-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:03, non-stop
Airbus A320 (320)
Korean Air KE3666
15:40
Atlanta (ATL) S

17:40
Buffalo (BUF)
Valid until 2025-05-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:00, non-stop
Boeing 737-900 (739)
Korean Air KE3666
15:49
Atlanta (ATL) S

17:49
Buffalo (BUF)
Effective 2025-05-10 through 2025-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:00, non-stop
Boeing 757 (757)
Korean Air KE3666
15:49
Atlanta (ATL) S

17:50
Buffalo (BUF)
Effective 2025-05-24 through 2025-06-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:01, non-stop
Airbus A321 (321)
Korean Air KE3666
15:50
Atlanta (ATL) S

17:50
Buffalo (BUF)
Effective 2025-12-20 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2050)
Duration: 2:00, non-stop
Boeing 737-900 (739)
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Parallax here ATL-BUF
  • KE 3666 is a domestic flight departing from the Atlanta airport (ATL) and arriving at Buffalo airport (BUF).
  • The flight distance is 712 miles, or 1146 km.
  • The timezone of both the departure and the arrival airports is UTC-5 (plus 1h DST). Current time at both airports is 3:44am.
  • For direct flights, the flight time varies between 1:59 and 2:05.
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