(AC) Air Canada 3991 Flight Details
Delayed by 14h 40m | Scheduled
Departure
ROA
Roanoke-Blacksburg Regional Airport, VA, US
Flight Gate Times
22-Mar-2026
Scheduled
19:50
EDT
Estimated
10:30
EDT
Total Departure Delay: 14 h 40 mins
Flight Runway Times
22-Mar-2026
Scheduled
20:05
EDT
Estimated
10:45
EDT
Runway Delay: 14 h 40 mins
Terminal
-
Gate
2
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 17m
Arrival
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
22-Mar-2026
Scheduled
21:07
EDT
Estimated
11:47
EDT
Total Arrival Delay: 14 h 40 mins
Flight Runway Times
22-Mar-2026
Scheduled
21:00
EDT
Estimated
11:40
EDT
Runway Delay: 14 h 40 mins
Terminal
-
Gate
A6B
Baggage Claim
5
Tail Number
N16170
Flight Time
Estimated
1h 17m
Flight Notes
Operated by CommuteAir on behalf of United Airlines 4866
Also marketed as (AV) Avianca 2099, (LH) Lufthansa 8620, (UA) United Airlines 4866
Event Timeline
Date
Event
Data Updated
23 Mar
10:44
06:44
06:44
Gate Adjustment
Arrival Gate changed from A4A to A6B
23 Mar
10:35
06:35
06:35
Time Adjustment
Estimated Runway Arrival changed to Mar-23-2026 11:40 AM
23 Mar
02:54
22:54
22:54
Time Adjustment
Estimated Runway Departure changed from Mar-22-2026 11:15 PM to Mar-23-2026 10:45 AM
23 Mar
02:54
22:54
22:54
Time Adjustment
Estimated Gate Departure changed from Mar-22-2026 11:00 PM to Mar-23-2026 10:30 AM
Estimated Gate Arrival changed from Mar-23-2026 12:17 AM to Mar-23-2026 11:47 AM
23 Mar
02:32
22:32
22:32
Time Adjustment
Estimated Gate Departure changed from Mar-22-2026 10:30 PM to Mar-22-2026 11:00 PM
Estimated Gate Arrival changed from Mar-22-2026 11:47 PM to Mar-23-2026 12:17 AM
23 Mar
02:28
22:28
22:28
Time Adjustment
Estimated Runway Departure changed from Mar-22-2026 10:45 PM to Mar-22-2026 11:15 PM
23 Mar
02:02
22:02
22:02
Time Adjustment
Estimated Gate Departure changed from Mar-22-2026 10:00 PM to Mar-22-2026 10:30 PM
Estimated Gate Arrival changed from Mar-22-2026 11:17 PM to Mar-22-2026 11:47 PM
23 Mar
01:57
21:57
21:57
Time Adjustment
Estimated Runway Departure changed from Mar-22-2026 10:15 PM to Mar-22-2026 10:45 PM
23 Mar
01:45
21:45
21:45
Time Adjustment
Estimated Gate Departure changed from Mar-22-2026 9:30 PM to Mar-22-2026 10:00 PM
Estimated Gate Arrival changed from Mar-22-2026 10:47 PM to Mar-22-2026 11:17 PM
23 Mar
01:44
21:44
21:44
Time Adjustment
Estimated Runway Departure changed from Mar-22-2026 9:45 PM to Mar-22-2026 10:15 PM
23 Mar
01:03
21:03
21:03
Time Adjustment
Estimated Gate Departure changed from Mar-22-2026 9:00 PM to Mar-22-2026 9:30 PM
Estimated Gate Arrival changed from Mar-22-2026 10:17 PM to Mar-22-2026 10:47 PM
23 Mar
01:00
21:00
21:00
Time Adjustment
Estimated Runway Departure changed from Mar-22-2026 9:15 PM to Mar-22-2026 9:45 PM
23 Mar
00:37
20:37
20:37
Time Adjustment
Estimated Runway Departure changed from Mar-22-2026 8:45 PM to Mar-22-2026 9:15 PM
23 Mar
00:37
20:37
20:37
Time Adjustment
Estimated Gate Departure changed from Mar-22-2026 8:30 PM to Mar-22-2026 9:00 PM
Estimated Gate Arrival changed from Mar-22-2026 9:47 PM to Mar-22-2026 10:17 PM
23 Mar
00:02
20:02
20:02
Gate Adjustment
Arrival Gate changed from A2E to A4A
22 Mar
23:52
19:52
19:52
Time Adjustment
Estimated Runway Departure changed from Mar-22-2026 8:05 PM to Mar-22-2026 8:45 PM
22 Mar
23:52
19:52
19:52
Time Adjustment
Estimated Gate Departure changed from Mar-22-2026 7:50 PM to Mar-22-2026 8:30 PM
Estimated Gate Arrival changed from Mar-22-2026 9:07 PM to Mar-22-2026 9:47 PM
22 Mar
20:44
16:44
16:44
Gate Adjustment
Arrival Gate changed from A6B to A2E
22 Mar
20:41
16:41
16:41
Time Adjustment
Estimated Runway Departure changed to Mar-22-2026 8:05 PM
22 Mar
20:00
16:00
16:00
Gate Adjustment
Arrival Gate changed from A4C to A6B
22 Mar
19:44
15:44
15:44
Gate Adjustment
Arrival Gate changed from A6B to A4C
22 Mar
19:44
15:44
15:44
Gate Adjustment
Arrival Gate changed from A4B to A6B
22 Mar
19:33
15:33
15:33
Gate Adjustment
Arrival Gate changed from A4C to A4B
22 Mar
19:27
15:27
15:27
Gate Adjustment
Arrival Gate changed from A2F to A4C
22 Mar
16:55
12:55
12:55
Gate Adjustment
Baggage changed from 3 to 5
22 Mar
04:02
00:02
00:02
Gate Adjustment
Arrival Gate changed from A1 to A2F
22 Mar
02:02
22:02
22:02
Equipment Adjustment
Tail Number changed from N24128 to N16170
22 Mar
02:02
22:02
22:02
Equipment Adjustment
Tail Number changed from N21129 to N24128
22 Mar
02:02
22:02
22:02
Gate Adjustment
Arrival Gate changed from A4A to A1
22 Mar
02:02
22:02
22:02
Gate Adjustment
Departure Gate changed to 2
22 Mar
01:09
21:09
21:09
Gate Adjustment
Arrival Gate changed to A4A
Baggage changed to 3
21 Mar
23:56
19:56
19:56
Time Adjustment
Scheduled Runway Departure changed from Mar-22-2026 7:57 PM to Mar-22-2026 8:05 PM
Scheduled Runway Arrival changed from Mar-22-2026 8:38 PM to Mar-22-2026 9:00 PM
21 Mar
23:51
19:51
19:51
Time Adjustment
Scheduled Runway Departure changed to Mar-22-2026 7:57 PM
Scheduled Runway Arrival changed to Mar-22-2026 8:38 PM
21 Mar
05:51
01:51
01:51
Time Adjustment
Estimated Gate Departure changed to Mar-22-2026 7:50 PM
Estimated Gate Arrival changed to Mar-22-2026 9:07 PM
Tail Number changed to N21129
Actual Equipment changed from ERJ to E45
21 Mar
05:02
01:02
01:02
Equipment Adjustment
Actual Equipment changed to ERJ
19 Mar
18:47
14:47
14:47
Record Created
19 Mar
18:47
14:47
14:47
Time Adjustment
Scheduled Gate Departure changed to Mar-22-2026 7:50 PM
Scheduled Gate Arrival changed to Mar-22-2026 9:07 PM
Scheduled Equipment changed to ERJ