(UA) United Airlines 4637 Flight Details
On time | Arrived
Departure
DEN
Denver International Airport, CO, US
Flight Gate Times
01-Jan-2026
Scheduled
07:45
MST
Actual
07:49
MST
Total Departure Delay: 4 mins
Flight Runway Times
01-Jan-2026
Scheduled
08:04
MST
Actual
08:09
MST
Runway Delay: 5 mins
Terminal
-
Gate
B55
Craft Type
Canadair (Bombardier) Regional Jet 700 and Challenger 870
CR7
Flight Time
Scheduled
2h 14m
Arrival
TUS
Tucson International Airport, AZ, US
Flight Gate Times
01-Jan-2026
Scheduled
09:59
MST
Actual
09:58
MST
Total Arrival Delay: -
Flight Runway Times
01-Jan-2026
Scheduled
09:48
MST
Actual
09:53
MST
Runway Delay: 5 mins
Terminal
-
Gate
A8
Baggage Claim
7
Tail Number
N794SK
Flight Time
Actual
2h 9m
Flight Notes
Operated by SkyWest Airlines on behalf of United Airlines
Also marketed as (AC) Air Canada 3974
Event Timeline
Date
Event
Data Updated
1 Jan
16:59
09:59
09:59
Time Adjustment
Estimated Gate Arrival changed from Jan-01-2026 9:59 AM to Jan-01-2026 9:58 AM
Actual Gate Arrival changed to Jan-01-2026 9:58 AM
1 Jan
16:55
09:55
09:55
Time Adjustment
Estimated Runway Arrival changed from Jan-01-2026 9:52 AM to Jan-01-2026 9:53 AM
Actual Runway Arrival changed from Jan-01-2026 9:52 AM to Jan-01-2026 9:53 AM
Estimated Gate Arrival changed from Jan-01-2026 9:56 AM to Jan-01-2026 9:59 AM
1 Jan
16:53
09:53
09:53
Status Landed
Estimated Runway Arrival changed from Jan-01-2026 9:51 AM to Jan-01-2026 9:52 AM
Actual Runway Arrival changed to Jan-01-2026 9:52 AM
Status changed from Active to Landed
1 Jan
15:13
08:13
08:13
Time Adjustment
Estimated Runway Arrival changed from Jan-01-2026 9:36 AM to Jan-01-2026 9:51 AM
Estimated Gate Arrival changed from Jan-01-2026 9:41 AM to Jan-01-2026 9:56 AM
1 Jan
15:10
08:10
08:10
Time Adjustment
Actual Runway Departure changed to Jan-01-2026 8:09 AM
1 Jan
14:55
07:55
07:55
Time Adjustment
Estimated Runway Departure changed from Jan-01-2026 8:09 AM to Jan-01-2026 8:10 AM
1 Jan
14:55
07:55
07:55
Time Adjustment
Estimated Runway Departure changed from Jan-01-2026 8:10 AM to Jan-01-2026 8:09 AM
Estimated Gate Arrival changed from Jan-01-2026 10:04 AM to Jan-01-2026 9:41 AM
1 Jan
14:50
07:50
07:50
Time Adjustment
Estimated Runway Departure changed from Jan-01-2026 8:10 AM to Jan-01-2026 8:09 AM
Estimated Runway Arrival changed from Jan-01-2026 9:52 AM to Jan-01-2026 9:36 AM
1 Jan
14:50
07:50
07:50
Time Adjustment
Estimated Runway Departure changed from Jan-01-2026 8:09 AM to Jan-01-2026 8:10 AM
Estimated Runway Arrival changed from Jan-01-2026 9:36 AM to Jan-01-2026 9:52 AM
1 Jan
14:50
07:50
07:50
Status Active
Estimated Gate Departure changed from Jan-01-2026 7:50 AM to Jan-01-2026 7:49 AM
Actual Gate Departure changed to Jan-01-2026 7:49 AM
Status changed from Scheduled to Active
1 Jan
14:50
07:50
07:50
Time Adjustment
Estimated Runway Departure changed from Jan-01-2026 8:11 AM to Jan-01-2026 8:09 AM
1 Jan
14:50
07:50
07:50
Time Adjustment
Estimated Runway Arrival changed from Jan-01-2026 9:53 AM to Jan-01-2026 9:36 AM
1 Jan
14:49
07:49
07:49
Time Adjustment
Estimated Gate Arrival changed from Jan-01-2026 9:58 AM to Jan-01-2026 10:04 AM
1 Jan
14:49
07:49
07:49
Time Adjustment
Estimated Runway Departure changed from Jan-01-2026 8:09 AM to Jan-01-2026 8:11 AM
Estimated Runway Arrival changed from Jan-01-2026 9:59 AM to Jan-01-2026 9:53 AM
Estimated Gate Arrival changed from Jan-01-2026 10:04 AM to Jan-01-2026 9:58 AM
1 Jan
14:49
07:49
07:49
Time Adjustment
Estimated Runway Departure changed from Jan-01-2026 8:06 AM to Jan-01-2026 8:09 AM
Estimated Gate Departure changed from Jan-01-2026 7:45 AM to Jan-01-2026 7:50 AM
Estimated Runway Arrival changed from Jan-01-2026 9:48 AM to Jan-01-2026 9:59 AM
Estimated Gate Arrival changed from Jan-01-2026 9:53 AM to Jan-01-2026 10:04 AM
1 Jan
13:54
06:54
06:54
Time Adjustment
Estimated Runway Departure changed from Jan-01-2026 8:04 AM to Jan-01-2026 8:06 AM
1 Jan
13:53
06:53
06:53
Time Adjustment
Estimated Runway Departure changed to Jan-01-2026 8:04 AM
Scheduled Runway Arrival changed from Jan-01-2026 9:54 AM to Jan-01-2026 9:48 AM
1 Jan
13:53
06:53
06:53
Time Adjustment
Estimated Runway Arrival changed to Jan-01-2026 9:48 AM
Estimated Gate Arrival changed from Jan-01-2026 9:59 AM to Jan-01-2026 9:53 AM
1 Jan
07:13
00:13
00:13
Gate Adjustment
Departure Gate changed from B60 to B55
31 Dec
14:51
07:51
07:51
Time Adjustment
Scheduled Runway Departure changed from Jan-01-2026 7:52 AM to Jan-01-2026 8:04 AM
Scheduled Runway Arrival changed from Jan-01-2026 9:31 AM to Jan-01-2026 9:54 AM
31 Dec
14:46
07:46
07:46
Time Adjustment
Scheduled Runway Departure changed to Jan-01-2026 7:52 AM
Scheduled Runway Arrival changed to Jan-01-2026 9:31 AM
31 Dec
02:13
19:13
19:13
Gate Adjustment
Departure Gate changed to B60
30 Dec
12:25
05:25
05:25
Gate Adjustment
Arrival Gate changed to A8
Baggage changed to 7
30 Dec
04:07
21:07
21:07
Time Adjustment
Estimated Gate Departure changed to Jan-01-2026 7:45 AM
Estimated Gate Arrival changed to Jan-01-2026 9:59 AM
Tail Number changed to N794SK
Actual Equipment changed to CR7
29 Dec
18:45
11:45
11:45
Record Created
29 Dec
18:45
11:45
11:45
Time Adjustment
Scheduled Gate Departure changed to Jan-01-2026 7:45 AM
Scheduled Gate Arrival changed to Jan-01-2026 9:59 AM
Scheduled Equipment changed to CR7