Korean Air
flight
KE 3870:
Seattle-Tacoma - Salt Lake City
Seattle-Tacoma - Salt Lake City
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FLIGHT SCHEDULE
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-02-14 through 2026-03-07
Mon
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Wed
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Thu
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Fri
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Sun
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Codeshare flight, operated by Delta Air Lines.
(DL 1265)
Duration: 2:02, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3870
Operates only on 2026-02-08
Mon
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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
Codeshare flight, operated by Delta Air Lines.
(DL 1265)
Duration: 2:00, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-02-12 through 2026-03-06
Mon
Tue
Wed
Thu
Fri
Sat
-
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Sun
Codeshare flight, operated by Delta Air Lines.
(DL 1265)
Duration: 2:02, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-01-06 through 2026-01-16
Mon
Tue
Wed
Thu
Fri
Sat
-
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Sun
Codeshare flight, operated by Delta Air Lines.
(DL 1265)
Duration: 2:02, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-01-19 through 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 1265)
Duration: 2:00, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-01-20 through 2026-02-06
Mon
-
-
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 1265)
Duration: 2:02, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-02-10 through 2026-02-11
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 1265)
Duration: 2:02, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-01-24 through 2026-02-07
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Codeshare flight, operated by Delta Air Lines.
(DL 1265)
Duration: 2:02, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-03-09 through 2026-03-14
Mon
Tue
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Wed
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Thu
Fri
Sat
Sun
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Codeshare flight, operated by Delta Air Lines.
(DL 1120)
Duration: 2:07, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-03-15 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 1120)
Duration: 2:08, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 1120)
Duration: 2:10, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Korean Air KE3870
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 1120)
Duration: 2:07, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Korean Air KE3870
Operates only on 2026-01-10
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Codeshare flight, operated by Delta Air Lines.
(DL 1120)
Duration: 2:04, non-stop Airbus A220-300 (223)
Direct Codeshare Flights:
Korean Air KE3870
Effective 2026-01-17 through 2026-01-18
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 1120)
Duration: 2:02, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Korean Air KE3870
Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines.
(DL 1165)
Duration: 2:03, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Korean Air KE3870
Operates only on 2026-01-05
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 1239)
Duration: 2:05, non-stop Boeing 737-800 (738)
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Parallax here SEA-SLC
- KE 3870 is a domestic flight departing from the Seattle-Tacoma airport (SEA) and arriving at Salt Lake City airport (SLC).
- The flight distance is 687 miles, or 1106 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 2:00 and 2:10.