(UA) United Airlines 644 Flight Details
On time | Departed
Departure
DEN
Denver International Airport, CO, US
Flight Gate Times
21-Mar-2026
Scheduled
11:50
MDT
Actual
12:09
MDT
Total Departure Delay: 19 mins
Flight Runway Times
21-Mar-2026
Scheduled
12:04
MDT
Estimated
12:19
MDT
Runway Delay: 15 mins
Terminal
-
Gate
B23
Craft Type
Boeing 737MAX 9 Passenger
7M9
Flight Time
Scheduled
2h 54m
Arrival
PDX
Portland International Airport, OR, US
Flight Gate Times
21-Mar-2026
Scheduled
13:44
PDT
Estimated
13:52
PDT
Total Arrival Delay: 8 mins
Flight Runway Times
21-Mar-2026
Scheduled
13:29
PDT
Estimated
13:44
PDT
Runway Delay: 15 mins
Terminal
-
Gate
E4
Baggage Claim
6
Tail Number
N37506
Flight Time
Estimated
2h 43m
Event Timeline
Date
Event
Data Updated
21 Mar
18:14
12:14
11:14
Time Adjustment
Estimated Runway Departure changed from Mar-21-2026 12:14 PM to Mar-21-2026 12:19 PM
Estimated Gate Arrival changed from Mar-21-2026 1:48 PM to Mar-21-2026 1:52 PM
21 Mar
18:09
12:09
11:09
Status Active
Estimated Gate Departure changed from Mar-21-2026 12:05 PM to Mar-21-2026 12:09 PM
Actual Gate Departure changed to Mar-21-2026 12:09 PM
Status changed from Scheduled to Active
21 Mar
18:08
12:08
11:08
Time Adjustment
Estimated Runway Departure changed from Mar-21-2026 12:19 PM to Mar-21-2026 12:14 PM
Estimated Gate Departure changed from Mar-21-2026 12:00 PM to Mar-21-2026 12:05 PM
Estimated Runway Arrival changed from Mar-21-2026 1:29 PM to Mar-21-2026 1:44 PM
Estimated Gate Arrival changed from Mar-21-2026 1:43 PM to Mar-21-2026 1:48 PM
21 Mar
18:04
12:04
11:04
Time Adjustment
Estimated Runway Departure changed from Mar-21-2026 12:14 PM to Mar-21-2026 12:19 PM
21 Mar
17:50
11:50
10:50
Time Adjustment
Estimated Gate Departure changed from Mar-21-2026 11:50 AM to Mar-21-2026 12:00 PM
Estimated Gate Arrival changed from Mar-21-2026 1:33 PM to Mar-21-2026 1:43 PM
21 Mar
17:48
11:48
10:48
Time Adjustment
Estimated Runway Departure changed from Mar-21-2026 12:04 PM to Mar-21-2026 12:14 PM
21 Mar
16:20
10:20
09:20
Time Adjustment
Estimated Gate Arrival changed from Mar-21-2026 1:44 PM to Mar-21-2026 1:33 PM
Departure Gate changed from B41 to B23
21 Mar
14:59
08:59
07:59
Time Adjustment
Scheduled Runway Arrival changed from Mar-21-2026 1:40 PM to Mar-21-2026 1:29 PM
21 Mar
14:59
08:59
07:59
Time Adjustment
Estimated Runway Arrival changed to Mar-21-2026 1:29 PM
21 Mar
14:37
08:37
07:37
Gate Adjustment
Departure Gate changed from A16 to B41
21 Mar
14:33
08:33
07:33
Time Adjustment
Estimated Runway Departure changed to Mar-21-2026 12:04 PM
21 Mar
11:57
05:57
04:57
Gate Adjustment
Departure Gate changed from B35 to A16
21 Mar
11:02
05:02
04:02
Gate Adjustment
Departure Gate changed from A19 to B35
21 Mar
10:20
04:20
03:20
Gate Adjustment
Departure Gate changed from A14 to A19
21 Mar
09:37
03:37
02:37
Gate Adjustment
Departure Gate changed from A21 to A14
21 Mar
09:32
03:32
02:32
Equipment Adjustment
Tail Number changed from N66803 to N37506
Actual Equipment changed from 7S9 to 7M9
20 Mar
17:56
11:56
10:56
Time Adjustment
Scheduled Runway Departure changed from Mar-21-2026 12:06 PM to Mar-21-2026 12:04 PM
Scheduled Runway Arrival changed from Mar-21-2026 1:21 PM to Mar-21-2026 1:40 PM
20 Mar
17:51
11:51
10:51
Time Adjustment
Scheduled Runway Departure changed to Mar-21-2026 12:06 PM
Scheduled Runway Arrival changed to Mar-21-2026 1:21 PM
20 Mar
16:08
10:08
09:08
Gate Adjustment
Departure Gate changed to A21
20 Mar
08:49
02:49
01:49
Gate Adjustment
Arrival Gate changed to E4
Baggage changed to 6
19 Mar
16:20
10:20
09:20
Equipment Adjustment
Tail Number changed to N66803
Actual Equipment changed to 7S9
19 Mar
16:20
10:20
09:20
Time Adjustment
Estimated Gate Departure changed to Mar-21-2026 11:50 AM
Estimated Gate Arrival changed to Mar-21-2026 1:44 PM
18 Mar
18:45
12:45
11:45
Record Created
18 Mar
18:45
12:45
11:45
Time Adjustment
Scheduled Gate Departure changed to Mar-21-2026 11:50 AM
Scheduled Gate Arrival changed to Mar-21-2026 1:44 PM
Scheduled Equipment changed to 739