Flight OddsUA3991 IAH → TUL
United Airlines · Houston, TX to Tulsa, OK · 27 flights observed, 2026-05-21 to 2026-06-30 · 429 mi
UA3991 covers more than one route in the data window — the stats below are for IAH → TUL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-3 min
90th percentile
+55 min
Cancellation rate
0%
How often is UA3991 on time?
Across 27 flights on IAH → TUL from 2026-05-21 to 2026-06-30, UA3991 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +55 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 21 | 78% |
| 16-30 min | 3 | 11% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 7% |
| 2+ hrs | 1 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 7 | 86% | +15 min |
| 2026-06 | 20 | 75% | +13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 6 | 83% |
| Wed | 5 | 80% |
| Thu | 5 | 80% |
| Fri | No data | — |
| Sat | No data | — |
| Sun | 6 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…