Korean Air
flight
KE 3999:
Salt Lake City - Boston Logan
Salt Lake City - Boston Logan
FLIGHT SCHEDULE
Direct Codeshare Flights:
Korean Air KE3999
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 702)
Duration: 4:42, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Korean Air KE3999
Effective 2026-10-06 through 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 702)
Duration: 4:34, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Korean Air KE3999
Effective from 2026-10-27
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 702)
Duration: 4:34, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Korean Air KE3999
Effective 2026-01-06 through 2026-02-10
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 702)
Duration: 4:29, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Korean Air KE3999
Effective 2026-02-13 through 2026-03-06
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 702)
Duration: 4:32, non-stop Airbus A321neo (32Q)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Korean Air KE3999
Effective 2026-03-08 through 2026-03-29
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 702)
Duration: 4:29, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Korean Air KE3999
Effective 2026-03-30 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 702)
Duration: 4:29, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Korean Air KE3999
Valid until 2026-01-04
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 702)
Duration: 4:34, non-stop Airbus A321neo (32Q)
The flight arrives 1 day after departure.
- KE 3999 is a domestic flight departing from the Salt Lake City airport (SLC) and arriving at Boston Logan airport (BOS).
- The flight distance is 2098 miles, or 3377 km.
- The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-5 . 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 4:29 and 4:42.