Flight OddsUA1535 IAD → IAH
United Airlines · Washington, DC to Houston, TX · 307 flights observed, 2025-07-01 to 2026-06-30 · 1,190 mi
UA1535 covers more than one route in the data window — the stats below are for IAD → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
-11 min
90th percentile
+39 min
Cancellation rate
1%
How often is UA1535 on time?
Across 307 flights on IAD → IAH from 2025-07-01 to 2026-06-30, UA1535 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +39 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 | 251 | 83% |
| 16-30 min | 13 | 4% |
| 31-60 min | 19 | 6% |
| 61-120 min | 8 | 3% |
| 2+ hrs | 12 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 61% | +27 min |
| 2025-08 | 18 | 72% | +6 min |
| 2025-09 | 6 | 83% | -9 min |
| 2025-10 | 31 | 77% | +16 min |
| 2025-11 | 30 | 90% | -7 min |
| 2025-12 | 31 | 77% | -4 min |
| 2026-01 | 30 | 97% | -15 min |
| 2026-02 | 11 | 100% | -25 min |
| 2026-03 | 26 | 81% | +11 min |
| 2026-04 | 30 | 100% | -7 min |
| 2026-05 | 31 | 87% | -2 min |
| 2026-06 | 28 | 75% | +15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 44 | 86% |
| Tue | 43 | 91% |
| Wed | 42 | 79% |
| Thu | 44 | 73% |
| Fri | 44 | 77% |
| Sat | 44 | 86% |
| Sun | 42 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…