Live tracking not available yet
DL1221 has a schedule in our database but isn't on the airport board right now. Live position data typically appears within a few hours of departure.
Flight Status
Scheduled
Route Info
MKE
General Mitchell International Airport
Milwaukee
TM Gate D46 Scheduled 5:45 AM
Actual 8:42 AM
ATL
Hartsfield Jackson Atlanta International Airport
Atlanta
TS Gate A03 Scheduled 8:49 AM
Actual 11:21 AM
2h 4m flight time
Daily
Recent Flights
Last 2 observedMar 11
Wed
MKE
ATL
Dep 05:23:00
(actual 05:59:00)
739
In Air
Mar 07
Sat
MKE
ATL
Dep 05:23:00
(actual 05:44:00)
739
Boarding
Schedule
Operates
Daily
Departure
5:45 AM
Arrival
8:49 AM
Duration
2h 4m
Aircraft
Boeing 737-900
Terminal
TM
TS
Gate
D46
A03
Actual
08:42
11:21
Operating Days
Mo
Tu
We
Th
Fr
Sa
Su
Upcoming
Thu, Mar 19
Fri, Mar 20
Sat, Mar 21
Sun, Mar 22
Mon, Mar 23
Tue, Mar 24
Wed, Mar 25
Schedule valid
Mar 14 —
Jun 13, 2026