(UA) United Airlines 1252 Flight Details
On time | Arrived
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
23-May-2026
Scheduled
10:31
EDT
Actual
10:30
EDT
Total Departure Delay: -
Flight Runway Times
23-May-2026
Scheduled
10:51
EDT
Actual
10:42
EDT
Runway Delay: -
Terminal
-
Gate
D1
Craft Type
Airbus A319
319
Flight Time
Scheduled
2h 23m
Arrival
ORD
Chicago O'Hare International Airport, IL, US
Flight Gate Times
23-May-2026
Scheduled
11:54
CDT
Actual
11:26
CDT
Total Arrival Delay: -
Flight Runway Times
23-May-2026
Scheduled
11:24
CDT
Actual
11:12
CDT
Runway Delay: -
Terminal
1
Gate
B22
Baggage Claim
3
Tail Number
N878UA
Flight Time
Actual
1h 56m
Flight Notes
Also marketed as (AC) Air Canada 4444
Event Timeline
Date
Event
Data Updated
23 May
16:29
12:29
11:29
Time Adjustment
Estimated Gate Arrival changed from May-23-2026 11:22 AM to May-23-2026 11:26 AM
Actual Gate Arrival changed to May-23-2026 11:26 AM
23 May
16:17
12:17
11:17
Time Adjustment
Estimated Gate Arrival changed from May-23-2026 11:24 AM to May-23-2026 11:22 AM
23 May
16:13
12:13
11:13
Status Landed
Estimated Runway Arrival changed from May-23-2026 11:14 AM to May-23-2026 11:12 AM
Actual Runway Arrival changed to May-23-2026 11:12 AM
Status changed from Active to Landed
23 May
16:12
12:12
11:12
Time Adjustment
Estimated Runway Arrival changed from May-23-2026 11:16 AM to May-23-2026 11:14 AM
Estimated Gate Arrival changed from May-23-2026 11:33 AM to May-23-2026 11:24 AM
Arrival Gate changed from E8 to B22
Arrival Terminal changed from 2 to 1
23 May
14:47
10:47
09:47
Time Adjustment
Estimated Runway Departure changed from May-23-2026 10:41 AM to May-23-2026 10:42 AM
Actual Runway Departure changed from May-23-2026 10:41 AM to May-23-2026 10:42 AM
Estimated Runway Arrival changed from May-23-2026 11:13 AM to May-23-2026 11:16 AM
Estimated Gate Arrival changed from May-23-2026 11:41 AM to May-23-2026 11:33 AM
23 May
14:44
10:44
09:44
Time Adjustment
Estimated Runway Arrival changed from May-23-2026 11:07 AM to May-23-2026 11:13 AM
23 May
14:44
10:44
09:44
Time Adjustment
Estimated Runway Departure changed from May-23-2026 10:42 AM to May-23-2026 10:41 AM
Actual Runway Departure changed from May-23-2026 10:42 AM to May-23-2026 10:41 AM
23 May
14:43
10:43
09:43
Time Adjustment
Actual Runway Departure changed to May-23-2026 10:42 AM
23 May
14:42
10:42
09:42
Time Adjustment
Estimated Runway Departure changed from May-23-2026 10:51 AM to May-23-2026 10:42 AM
Estimated Runway Arrival changed from May-23-2026 11:15 AM to May-23-2026 11:07 AM
23 May
14:42
10:42
09:42
Time Adjustment
Estimated Runway Arrival changed from May-23-2026 11:07 AM to May-23-2026 11:15 AM
23 May
14:38
10:38
09:38
Time Adjustment
Estimated Runway Arrival changed from May-23-2026 11:23 AM to May-23-2026 11:07 AM
23 May
14:35
10:35
09:35
Status Active
Estimated Gate Departure changed from May-23-2026 10:31 AM to May-23-2026 10:30 AM
Actual Gate Departure changed to May-23-2026 10:30 AM
Estimated Gate Arrival changed from May-23-2026 11:42 AM to May-23-2026 11:41 AM
Status changed from Scheduled to Active
23 May
14:30
10:30
09:30
Time Adjustment
Estimated Runway Arrival changed from May-23-2026 11:24 AM to May-23-2026 11:23 AM
23 May
12:24
08:24
07:24
Gate Adjustment
Arrival Gate changed from C31 to E8
Arrival Terminal changed from 1 to 2
23 May
12:23
08:23
07:23
Time Adjustment
Estimated Gate Arrival changed from May-23-2026 11:54 AM to May-23-2026 11:42 AM
Arrival Gate changed from E8 to C31
Arrival Terminal changed from 2 to 1
23 May
12:11
08:11
07:11
Gate Adjustment
Arrival Gate changed from B22 to E8
Arrival Terminal changed from 1 to 2
23 May
12:09
08:09
07:09
Time Adjustment
Estimated Runway Arrival changed from May-23-2026 11:36 AM to May-23-2026 11:24 AM
23 May
12:09
08:09
07:09
Time Adjustment
Scheduled Runway Arrival changed from May-23-2026 11:36 AM to May-23-2026 11:24 AM
23 May
12:09
08:09
07:09
Time Adjustment
Estimated Runway Departure changed to May-23-2026 10:51 AM
Estimated Runway Arrival changed to May-23-2026 11:36 AM
23 May
09:12
05:12
04:12
Equipment Adjustment
Tail Number changed from N447UA to N878UA
Actual Equipment changed from 320 to 319
23 May
05:23
01:23
00:23
Equipment Adjustment
Tail Number changed from N437UA to N447UA
23 May
01:30
21:30
20:30
Equipment Adjustment
Tail Number changed from N893UA to N437UA
Actual Equipment changed from 319 to 320
22 May
16:11
12:11
11:11
Equipment Adjustment
Tail Number changed from N882UA to N893UA
22 May
16:05
12:05
11:05
Gate Adjustment
Departure Gate changed from D5 to D1
22 May
14:41
10:41
09:41
Time Adjustment
Scheduled Runway Departure changed from May-23-2026 10:35 AM to May-23-2026 10:51 AM
Scheduled Runway Arrival changed from May-23-2026 11:02 AM to May-23-2026 11:36 AM
22 May
14:36
10:36
09:36
Time Adjustment
Scheduled Runway Departure changed to May-23-2026 10:35 AM
Scheduled Runway Arrival changed to May-23-2026 11:02 AM
22 May
13:29
09:29
08:29
Gate Adjustment
Departure Gate changed to D5
22 May
11:05
07:05
06:05
Equipment Adjustment
Tail Number changed from N436UA to N882UA
Actual Equipment changed from 320 to 319
22 May
01:11
21:11
20:11
Equipment Adjustment
Tail Number changed from N836UA to N436UA
Actual Equipment changed from 319 to 320
21 May
22:59
18:59
17:59
Gate Adjustment
Arrival Gate changed to B22
Baggage changed to 3
20 May
20:23
16:23
15:23
Equipment Adjustment
Tail Number changed from N846UA to N836UA
20 May
20:17
16:17
15:17
Equipment Adjustment
Tail Number changed from N836UA to N846UA
20 May
20:05
16:05
15:05
Equipment Adjustment
Tail Number changed to N836UA
Actual Equipment changed to 319
20 May
20:05
16:05
15:05
Time Adjustment
Estimated Gate Departure changed to May-23-2026 10:31 AM
Estimated Gate Arrival changed to May-23-2026 11:54 AM
20 May
18:44
14:44
13:44
Record Created
20 May
18:44
14:44
13:44
Time Adjustment
Scheduled Gate Departure changed to May-23-2026 10:31 AM
Scheduled Gate Arrival changed to May-23-2026 11:54 AM
Arrival Terminal changed to 1
Scheduled Equipment changed to 319