Flight OddsUA1542 IAH → SAT
United Airlines · Houston, TX to San Antonio, TX · 340 flights observed, 2025-07-01 to 2026-06-30 · 191 mi
UA1542 covers more than one route in the data window — the stats below are for IAH → SAT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-5 min
90th percentile
+47 min
Cancellation rate
1%
How often is UA1542 on time?
Across 340 flights on IAH → SAT from 2025-07-01 to 2026-06-30, UA1542 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +47 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 | 263 | 78% |
| 16-30 min | 26 | 8% |
| 31-60 min | 25 | 7% |
| 61-120 min | 18 | 5% |
| 2+ hrs | 5 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 76% | +17 min |
| 2025-08 | 31 | 61% | +16 min |
| 2025-09 | 30 | 93% | -3 min |
| 2025-10 | 31 | 84% | +1 min |
| 2025-11 | 29 | 86% | -3 min |
| 2025-12 | 31 | 71% | +5 min |
| 2026-01 | 30 | 87% | -1 min |
| 2026-02 | 28 | 82% | 0 min |
| 2026-03 | 7 | 100% | -14 min |
| 2026-04 | 30 | 77% | +9 min |
| 2026-05 | 31 | 74% | +10 min |
| 2026-06 | 30 | 63% | +27 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 49 | 73% |
| Tue | 50 | 82% |
| Wed | 48 | 81% |
| Thu | 47 | 72% |
| Fri | 47 | 77% |
| Sat | 47 | 83% |
| Sun | 49 | 78% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…