(UA) United Airlines 5251 Flight Details
On time | Scheduled
Departure
DEN
Denver International Airport, CO, US
Flight Gate Times
21-Dec-2025
Scheduled
19:15
MST
Estimated
19:15
MST
Total Departure Delay: -
Flight Runway Times
21-Dec-2025
Scheduled
19:34
MST
Actual
--
Runway Delay: -
Terminal
-
Gate
B64
Craft Type
Embraer 175
E75
Flight Time
Scheduled
1h 1m
Arrival
COS
Colorado Springs Airport, CO, US
Flight Gate Times
21-Dec-2025
Scheduled
20:16
MST
Estimated
20:16
MST
Total Arrival Delay: -
Flight Runway Times
21-Dec-2025
Scheduled
20:10
MST
Actual
--
Runway Delay: -
Terminal
-
Gate
7
Baggage Claim
5
Tail Number
N206SY
Flight Time
Estimated
1h 1m
Flight Notes
Operated by SkyWest Airlines on behalf of United Airlines
Event Timeline
Date
Event
Data Updated
21 Dec
02:21
19:21
19:21
Time Adjustment
Scheduled Runway Departure changed from Dec-21-2025 7:22 PM to Dec-21-2025 7:34 PM
Scheduled Runway Arrival changed from Dec-21-2025 7:37 PM to Dec-21-2025 8:10 PM
21 Dec
02:16
19:16
19:16
Time Adjustment
Scheduled Runway Departure changed to Dec-21-2025 7:22 PM
Scheduled Runway Arrival changed to Dec-21-2025 7:37 PM
20 Dec
18:13
11:13
11:13
Gate Adjustment
Arrival Gate changed to 7
Baggage changed to 5
20 Dec
13:44
06:44
06:44
Equipment Adjustment
Tail Number changed from N145SY to N206SY
20 Dec
13:19
06:19
06:19
Gate Adjustment
Departure Gate changed to B64
20 Dec
06:25
23:25
23:25
Equipment Adjustment
Tail Number changed from N141SY to N145SY
20 Dec
05:25
22:25
22:25
Equipment Adjustment
Tail Number changed from N156SY to N141SY
20 Dec
01:55
18:55
18:55
Equipment Adjustment
Tail Number changed from N120SY to N156SY
19 Dec
04:07
21:07
21:07
Time Adjustment
Estimated Gate Departure changed to Dec-21-2025 7:15 PM
Estimated Gate Arrival changed to Dec-21-2025 8:16 PM
Tail Number changed to N120SY
Actual Equipment changed to E75
18 Dec
18:48
11:48
11:48
Record Created
18 Dec
18:48
11:48
11:48
Time Adjustment
Scheduled Gate Departure changed to Dec-21-2025 7:15 PM
Scheduled Gate Arrival changed to Dec-21-2025 8:16 PM
Scheduled Equipment changed to E7W