Flight OddsUA3991 HDN → IAH
United Airlines · Hayden, CO to Houston, TX · 24 flights observed, 2026-03-05 to 2026-03-28 · 985 mi
UA3991 covers more than one route in the data window — the stats below are for HDN → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
71%
Median delay
-17 min
90th percentile
+54 min
Cancellation rate
8%
How often is UA3991 on time?
Across 24 flights on HDN → IAH from 2026-03-05 to 2026-03-28, UA3991 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -17 min, and the worst 10% of flights arrived +54 min or later. 8% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 15 | 71% |
| 16-30 min | 1 | 5% |
| 31-60 min | 3 | 14% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 2 | 10% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 21 | 71% | +17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 2 | 100% |
| Tue | 3 | 100% |
| Wed | 3 | 33% |
| Thu | 4 | 75% |
| Fri | 4 | 75% |
| Sat | 3 | 67% |
| Sun | 2 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…