(UA) United Airlines 2121 Flight Details
On time | Scheduled
Departure
DEN
Denver International Airport, CO, US
Flight Gate Times
28-Oct-2026
Scheduled
17:45
MDT
Estimated
17:45
MDT
Total Departure Delay: -
Flight Runway Times
28-Oct-2026
Scheduled
18:10
MDT
Actual
--
Runway Delay: -
Terminal
-
Gate
B55
Craft Type
Boeing 737-900 Passenger (Scimitar Winglets)
7S9
Flight Time
Scheduled
2h 35m
Arrival
GRR
Grand Rapids Gerald R. Ford International Airport, MI, US
Flight Gate Times
28-Oct-2026
Scheduled
22:20
EDT
Estimated
22:20
EDT
Total Arrival Delay: -
Flight Runway Times
28-Oct-2026
Scheduled
22:23
EDT
Actual
--
Runway Delay: -
Terminal
-
Gate
A1
Baggage Claim
2
Tail Number
N39475
Flight Time
Estimated
2h 35m
Event Timeline
Date
Event
Data Updated
28 Oct
01:15
19:15
21:15
Gate Adjustment
Departure Gate changed from B59 to B55
28 Oct
00:59
18:59
20:59
Gate Adjustment
Departure Gate changed from B44 to B59
28 Oct
00:39
18:39
20:39
Gate Adjustment
Departure Gate changed from B59 to B44
28 Oct
00:38
18:38
20:38
Gate Adjustment
Departure Gate changed from A17 to B59
28 Oct
00:32
18:32
20:32
Gate Adjustment
Departure Gate changed from A30 to A17
28 Oct
00:19
18:19
20:19
Gate Adjustment
Departure Gate changed from B44 to A30
27 Oct
23:51
17:51
19:51
Time Adjustment
Scheduled Runway Arrival changed from Oct-28-2026 10:24 PM to Oct-28-2026 10:23 PM
27 Oct
23:46
17:46
19:46
Time Adjustment
Scheduled Runway Departure changed to Oct-28-2026 6:10 PM
Scheduled Runway Arrival changed to Oct-28-2026 10:24 PM
27 Oct
23:44
17:44
19:44
Gate Adjustment
Departure Gate changed from A30 to B44
27 Oct
23:39
17:39
19:39
Equipment Adjustment
Tail Number changed from N57439 to N39475
27 Oct
21:53
15:53
17:53
Gate Adjustment
Departure Gate changed to A30
27 Oct
16:56
10:56
12:56
Time Adjustment
Estimated Gate Departure changed to Oct-28-2026 5:45 PM
Estimated Gate Arrival changed to Oct-28-2026 10:20 PM
Arrival Gate changed to A1
Baggage changed to 2
Tail Number changed to N57439
Actual Equipment changed to 7S9
25 Oct
18:45
12:45
14:45
Record Created
25 Oct
18:45
12:45
14:45
Time Adjustment
Scheduled Gate Departure changed to Oct-28-2026 5:45 PM
Scheduled Gate Arrival changed to Oct-28-2026 10:20 PM
Scheduled Equipment changed to 739