(UA) United Airlines 4291 Flight Details
On time | Scheduled
Departure
BUF
Buffalo Niagara International Airport, NY, US
Flight Gate Times
06-Aug-2026
Scheduled
15:00
EDT
Estimated
15:00
EDT
Total Departure Delay: -
Flight Runway Times
06-Aug-2026
Scheduled
15:20
EDT
Actual
--
Runway Delay: -
Terminal
-
Gate
10
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 23m
Arrival
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
06-Aug-2026
Scheduled
16:23
EDT
Estimated
16:23
EDT
Total Arrival Delay: -
Flight Runway Times
06-Aug-2026
Scheduled
16:17
EDT
Actual
--
Runway Delay: -
Terminal
-
Gate
A1
Baggage Claim
5
Tail Number
N21129
Flight Time
Estimated
1h 23m
Flight Notes
Operated by CommuteAir on behalf of United Airlines
Also marketed as (LH) Lufthansa 7751, (SN) Brussels Airlines 8961
Event Timeline
Date
Event
Data Updated
6 Aug
08:55
04:55
04:55
Gate Adjustment
Departure Gate changed to 10
6 Aug
08:32
04:32
04:32
Equipment Adjustment
Tail Number changed from N11199 to N21129
6 Aug
05:20
01:20
01:20
Gate Adjustment
Arrival Gate changed from A2F to A1
6 Aug
05:08
01:08
01:08
Gate Adjustment
Arrival Gate changed from A1 to A2F
6 Aug
04:56
00:56
00:56
Gate Adjustment
Arrival Gate changed from A2F to A1
6 Aug
04:50
00:50
00:50
Gate Adjustment
Arrival Gate changed from A1 to A2F
6 Aug
04:38
00:38
00:38
Gate Adjustment
Arrival Gate changed from A2F to A1
6 Aug
04:26
00:26
00:26
Gate Adjustment
Arrival Gate changed from A1 to A2F
6 Aug
04:15
00:15
00:15
Gate Adjustment
Arrival Gate changed from A2F to A1
6 Aug
04:08
00:08
00:08
Gate Adjustment
Arrival Gate changed from A1 to A2F
6 Aug
03:56
23:56
23:56
Gate Adjustment
Arrival Gate changed from A2F to A1
6 Aug
03:50
23:50
23:50
Gate Adjustment
Arrival Gate changed from A1 to A2F
6 Aug
03:38
23:38
23:38
Gate Adjustment
Arrival Gate changed from A2F to A1
6 Aug
03:26
23:26
23:26
Gate Adjustment
Arrival Gate changed from A1 to A2F
6 Aug
02:20
22:20
22:20
Equipment Adjustment
Tail Number changed from N12175 to N11199
5 Aug
20:26
16:26
16:26
Gate Adjustment
Arrival Gate changed to A1
Baggage changed to 5
5 Aug
19:06
15:06
15:06
Time Adjustment
Scheduled Runway Departure changed to Aug-06-2026 3:20 PM
Scheduled Runway Arrival changed to Aug-06-2026 4:17 PM
5 Aug
15:50
11:50
11:50
Equipment Adjustment
Tail Number changed from N23139 to N12175
4 Aug
15:50
11:50
11:50
Equipment Adjustment
Tail Number changed from N11191 to N23139
4 Aug
05:50
01:50
01:50
Time Adjustment
Estimated Gate Departure changed to Aug-06-2026 3:00 PM
Estimated Gate Arrival changed to Aug-06-2026 4:23 PM
Tail Number changed to N11191
Actual Equipment changed to E45
3 Aug
18:52
14:52
14:52
Record Created
3 Aug
18:52
14:52
14:52
Time Adjustment
Scheduled Gate Departure changed to Aug-06-2026 3:00 PM
Scheduled Gate Arrival changed to Aug-06-2026 4:23 PM
Scheduled Equipment changed to ERJ