Korean Air
flight
KE 3721:
Louisville - Atlanta
Louisville - Atlanta
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FLIGHT SCHEDULE
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-04-20 through 2026-06-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2407)
Duration: 1:26, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-06-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2407)
Duration: 1:26, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-10-06 through 2026-10-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2407)
Duration: 1:34, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-03-14 through 2026-04-11
Mon
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Codeshare flight, operated by Delta Air Lines.
(DL 1481)
Duration: 1:24, non-stop Boeing 717 (717)
Direct Codeshare Flights:
Korean Air KE3721
Operates only on 2026-04-18
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Codeshare flight, operated by Delta Air Lines.
(DL 3195)
Duration: 1:30, non-stop Boeing 717 (717)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-04-14 through 2026-04-15
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 Delta Air Lines.
(DL 3195)
Duration: 1:30, non-stop Boeing 717 (717)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-03-31 through 2026-04-08
Mon
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Tue
Wed
Thu
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Fri
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Codeshare flight, operated by Delta Air Lines.
(DL 3195)
Duration: 1:22, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3721
Operates only on 2026-10-24
Mon
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Tue
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Codeshare flight, operated by Delta Air Lines.
(DL 1126)
Duration: 1:31, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3721
Valid until 2026-01-04
Mon
Tue
Wed
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Thu
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Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2831)
Duration: 1:40, non-stop Boeing 717 (717)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-03-08 through 2026-04-12
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2831)
Duration: 1:38, non-stop Boeing 717 (717)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-04-13 through 2026-04-19
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2831)
Duration: 1:34, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-01-19 through 2026-02-06
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2831)
Duration: 1:53, non-stop Boeing 717 (717)
Direct Codeshare Flights:
Korean Air KE3721
Operates only on 2026-02-09
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
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Codeshare flight, operated by Delta Air Lines.
(DL 2831)
Duration: 1:53, non-stop Boeing 717 (717)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-02-12 through 2026-02-20
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
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Codeshare flight, operated by Delta Air Lines.
(DL 2068)
Duration: 1:51, non-stop Boeing 717 (717)
Direct Codeshare Flights:
Korean Air KE3721
Effective 2026-02-22 through 2026-03-06
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
Codeshare flight, operated by Delta Air Lines.
(DL 2068)
Duration: 1:51, non-stop Boeing 717 (717)
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Parallax here SDF-ATL
- KE 3721 is a domestic flight departing from the Louisville airport (SDF) and arriving at Atlanta airport (ATL).
- The flight distance is 322 miles, or 518 km.
- The timezone of both the departure and the arrival airports is UTC-5 . Current time at both airports is (loading...).
- For direct flights, the flight time varies between 1:22 and 1:53.