Flight OddsUA1821 MSY → IAH
United Airlines · New Orleans, LA to Houston, TX · 230 flights observed, 2025-07-01 to 2026-03-04 · 305 mi
UA1821 covers more than one route in the data window — the stats below are for MSY → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
89%
Median delay
-13 min
90th percentile
+16 min
Cancellation rate
1%
How often is UA1821 on time?
Across 230 flights on MSY → IAH from 2025-07-01 to 2026-03-04, UA1821 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived +16 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 201 | 89% |
| 16-30 min | 13 | 6% |
| 31-60 min | 9 | 4% |
| 61-120 min | 2 | 1% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 97% | -8 min |
| 2025-08 | 30 | 80% | +3 min |
| 2025-09 | 30 | 90% | -6 min |
| 2025-10 | 30 | 80% | -1 min |
| 2025-11 | 30 | 80% | +7 min |
| 2025-12 | 15 | 100% | -10 min |
| 2026-01 | 31 | 90% | -11 min |
| 2026-02 | 27 | 96% | -12 min |
| 2026-03 | 4 | 100% | -15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 33 | 79% |
| Tue | 33 | 94% |
| Wed | 32 | 97% |
| Thu | 31 | 87% |
| Fri | 33 | 94% |
| Sat | 32 | 91% |
| Sun | 33 | 79% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…