United Airlines
Is UA4821 delayed?
No — UA4821 landed in Amarillo 8 min early, at 11:11 on Sep 28 (as of Sep 28, 16:13 UTC).
Usually on time: arrived within 15 min of schedule on 19 of the last 21 flights.
8 min early
Official source · Updated
Departure
Houston
IAH
Actual
Scheduled 09:55
Sep 28
Arrival
Amarillo
AMA
Actual
Scheduled 11:19
Sep 28
Times shown in airport local time
Service date: · Scheduled departure date (America/Chicago)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 8 min early
Houston → Amarillo
- 4 min early
Houston → Amarillo
- 23 min early
Houston → Amarillo
- 67 min late
Houston → Amarillo
- 8 min early
Houston → Amarillo
Is UA4821 usually late?
Observation window: Aug 30, 2026 – Sep 29, 2026
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
At the airports today
Houston (IAH) departures
- Left more than 15 min late
- 22 of 271
- Cancelled today
- 1
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 28, 2026Arrived | Houston | Amarillo | -8 | |
| Sep 27, 2026Arrived | Houston | Amarillo | -4 | |
| Sep 26, 2026Arrived | Houston | Amarillo | -23 | |
| Sep 25, 2026Arrived | Houston | Amarillo | 67 | |
| Sep 24, 2026Arrived | Houston | Amarillo | -8 | |
| Sep 23, 2026Arrived | Houston | Amarillo | -31 | |
| Sep 22, 2026Arrived | Houston | Amarillo | -9 | |
| Sep 20, 2026Arrived | Houston | Amarillo | -20 | |
| Sep 19, 2026Arrived | Houston | Amarillo | -27 | |
| Sep 18, 2026Arrived | Houston | Amarillo | -18 | |
| Sep 17, 2026Arrived | Houston | Amarillo | -26 | |
| Sep 16, 2026Arrived | Houston | Amarillo | -20 | |
| Sep 14, 2026Arrived | Houston | Amarillo | -20 | |
| Sep 13, 2026Arrived | Houston | Amarillo | -17 | |
| Sep 12, 2026Arrived | Houston | Amarillo | -37 | |
| Sep 10, 2026Arrived | Houston | Amarillo | 99 | |
| Sep 9, 2026Arrived | Houston | Amarillo | -26 | |
| Sep 8, 2026Arrived | Houston | Amarillo | -26 | |
| Sep 6, 2026Arrived | Houston | Amarillo | -5 | |
| Sep 5, 2026Arrived | Houston | Amarillo | -27 | |
| Sep 4, 2026Arrived | Houston | Amarillo | -17 |
Email me if UA4821 runs late
We email you if your next UA4821 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.