flight Aircraft
N21129
EMBRAER ERJ-145XR
Operated by UNITED AIRLINES INC
- Tail number
- N21129
- Type
- E45X
- Mode-S
- A1BFF9
Not currently tracked · last seen Jul 26, 21:05 UTC
- Flights observed
- 628 showing last 50
- Avg flight time
- 55m
- Typical route
- IAD → ROA
- Last seen
- Jul 26, 21:05 UTC
Last known area
Recent flights last 50
| Date | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|
| 2026-07-26 | IAD → BTV | Jul 26, 19:50 UTC | Jul 26, 21:05 UTC | 1h 15m |
| 2026-07-26 | IAD → CMH | Jul 26, 16:50 UTC | Jul 26, 18:15 UTC | 1h 25m |
| 2026-07-26 | IAD → PVD | Jul 26, 14:50 UTC | Jul 26, 16:00 UTC | 1h 10m |
| 2026-07-26 | LRD → IAH | Jul 26, 12:35 UTC | Jul 26, 13:35 UTC | 1h 0m |
| 2026-07-26 | LRD → IAH | Jul 26, 12:43 UTC | Jul 26, 13:38 UTC | 55m |
| 2026-07-26 | IAH → MFE | Jul 26, 00:15 UTC | Jul 26, 01:10 UTC | 55m |
| 2026-07-26 | IAH → MFE | Jul 26, 00:28 UTC | Jul 26, 01:13 UTC | 45m |
| 2026-07-25 | IAD → BDL | Jul 25, 21:55 UTC | Jul 25, 22:50 UTC | 55m |
| 2026-07-25 | IAD → BDL | Jul 25, 22:03 UTC | Jul 25, 22:42 UTC | 39m |
| 2026-07-25 | LBB → IAH | Jul 25, 19:45 UTC | Jul 25, 20:30 UTC | 45m |
| 2026-07-25 | IAD → CMH | Jul 25, 16:55 UTC | Jul 25, 18:10 UTC | 1h 15m |
| 2026-07-25 | IAD → CMH | Jul 25, 17:00 UTC | Jul 25, 18:10 UTC | 1h 10m |
| 2026-07-25 | IAD → PVD | Jul 25, 14:55 UTC | Jul 25, 16:05 UTC | 1h 10m |
| 2026-07-25 | HSV → IAH | Jul 25, 11:55 UTC | Jul 25, 13:15 UTC | 1h 20m |
| 2026-07-25 | IAH → LBB | Jul 25, 02:40 UTC | Jul 25, 04:10 UTC | 1h 30m |
| 2026-07-25 | ALB → IAD | Jul 25, 00:45 UTC | Jul 25, 01:40 UTC | 55m |
| 2026-07-25 | ALB → IAD | Jul 25, 00:45 UTC | Jul 25, 01:40 UTC | 55m |
| 2026-07-24 | IAD → ALB | Jul 24, 23:00 UTC | Jul 24, 23:55 UTC | 55m |
| 2026-07-24 | IAD → HSV | Jul 24, 19:50 UTC | Jul 24, 20:45 UTC | 55m |
| 2026-07-24 | BTV → IAD | Jul 24, 17:05 UTC | Jul 24, 18:15 UTC | 1h 10m |
| 2026-07-24 | IAD → BTV | Jul 24, 14:50 UTC | Jul 24, 15:05 UTC | 15m |
| 2026-07-24 | IAD → BDL | Jul 24, 13:25 UTC | Jul 24, 13:40 UTC | 15m |
| 2026-07-24 | IAH → LIT | Jul 24, 00:00 UTC | Jul 24, 00:55 UTC | 55m |
| 2026-07-23 | IAD → ROC | Jul 23, 22:05 UTC | Jul 23, 22:55 UTC | 50m |
| 2026-07-23 | MDT → IAD | Jul 23, 19:05 UTC | Jul 23, 19:40 UTC | 35m |
| 2026-07-23 | IAD → MDT | Jul 23, 17:20 UTC | Jul 23, 17:45 UTC | 25m |
| 2026-07-23 | ROA → IAD | Jul 23, 14:50 UTC | Jul 23, 15:35 UTC | 45m |
| 2026-07-23 | IAD → ROA | Jul 23, 12:50 UTC | Jul 23, 13:35 UTC | 45m |
| 2026-07-23 | IAD → ROA | Jul 23, 12:51 UTC | Jul 23, 13:26 UTC | 35m |
| 2026-07-23 | IAD → BUF | Jul 23, 10:20 UTC | Jul 23, 11:05 UTC | 45m |
| 2026-07-23 | OKC → IAH | Jul 23, 02:40 UTC | Jul 23, 03:30 UTC | 50m |
| 2026-07-23 | IAD → BTV | Jul 23, 00:15 UTC | Jul 23, 01:40 UTC | 1h 25m |
| 2026-07-22 | DEN → XNA | Jul 22, 22:05 UTC | Jul 22, 23:10 UTC | 1h 5m |
| 2026-07-22 | - | Jul 22, 19:15 UTC | Jul 22, 19:45 UTC | 30m |
| 2026-07-22 | IAD → MDT | Jul 22, 16:55 UTC | Jul 22, 17:20 UTC | 25m |
| 2026-07-22 | IAD → MDT | Jul 22, 17:05 UTC | Jul 22, 17:20 UTC | 15m |
| 2026-07-22 | ROA → IAD | Jul 22, 14:50 UTC | Jul 22, 15:30 UTC | 40m |
| 2026-07-22 | IAD → ROA | Jul 22, 13:10 UTC | Jul 22, 13:45 UTC | 35m |
| 2026-07-22 | IAD → ROA | Jul 22, 12:51 UTC | Jul 22, 13:43 UTC | 52m |
| 2026-07-21 | IAD → SYR | Jul 21, 17:05 UTC | Jul 21, 18:00 UTC | 55m |
| 2026-07-21 | IAD → SYR | Jul 21, 17:05 UTC | Jul 21, 17:53 UTC | 48m |
| 2026-07-21 | HSV → IAD | Jul 21, 13:25 UTC | Jul 21, 14:55 UTC | 1h 30m |
| 2026-07-21 | - | Jul 21, 02:45 UTC | Jul 21, 04:10 UTC | 1h 25m |
| 2026-07-20 | ALB → IAD | Jul 20, 23:55 UTC | Jul 21, 00:55 UTC | 1h 0m |
| 2026-07-20 | - | Jul 20, 17:00 UTC | Jul 20, 17:55 UTC | 55m |
| 2026-07-20 | - | Jul 20, 13:45 UTC | Jul 20, 14:55 UTC | 1h 10m |
| 2026-07-20 | MFE → IAH | Jul 20, 03:35 UTC | Jul 20, 04:45 UTC | 1h 10m |
| 2026-07-19 | PWM → IAD | Jul 19, 23:50 UTC | Jul 20, 00:45 UTC | 55m |
| 2026-07-19 | - | Jul 19, 21:50 UTC | Jul 19, 22:45 UTC | 55m |
| 2026-07-19 | IAD → GSP | Jul 19, 21:43 UTC | Jul 19, 22:50 UTC | 1h 7m |
Specifications
| Registration | N21129 |
| Aircraft type | EMBRAER ERJ-145XR (E45X) |
| Operator | UNITED AIRLINES INC |
| Mode-S code | A1BFF9 · 50337771 (octal) |
Looking for transponder-level data? View the Mode-S A1BFF9 page for country allocation, callsign history, and ADS-B signal details.
N21129 frequently asked
What type of aircraft is N21129?
N21129 is a EMBRAER ERJ-145XR (ICAO type code E45X).
Who operates N21129?
N21129 is operated by UNITED AIRLINES INC.
What is the Mode-S transponder code for N21129?
N21129 broadcasts on Mode-S (ICAO 24-bit) address A1BFF9 (octal 50337771). View the transponder page.
What route does N21129 typically fly?
N21129 most frequently flies between IAD and ROA based on observed flights.
Where is N21129 right now?
N21129 is not currently being tracked; last seen Jul 26, 21:05 UTC.