Flight OddsUA2135 SEA → IAH
United Airlines · Seattle, WA to Houston, TX · 359 flights observed, 2025-07-01 to 2026-06-30 · 1,874 mi
UA2135 covers more than one route in the data window — the stats below are for SEA → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
92%
Median delay
-14 min
90th percentile
+13 min
Cancellation rate
1%
How often is UA2135 on time?
Across 359 flights on SEA → IAH from 2025-07-01 to 2026-06-30, UA2135 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -14 min, and the worst 10% of flights arrived +13 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 | 326 | 92% |
| 16-30 min | 14 | 4% |
| 31-60 min | 6 | 2% |
| 61-120 min | 4 | 1% |
| 2+ hrs | 5 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 26 | 88% | +1 min |
| 2025-08 | 28 | 79% | +2 min |
| 2025-09 | 30 | 100% | -13 min |
| 2025-10 | 31 | 97% | -12 min |
| 2025-11 | 30 | 87% | +2 min |
| 2025-12 | 31 | 90% | +1 min |
| 2026-01 | 31 | 97% | -16 min |
| 2026-02 | 28 | 100% | -20 min |
| 2026-03 | 29 | 93% | -16 min |
| 2026-04 | 30 | 90% | -14 min |
| 2026-05 | 31 | 90% | -8 min |
| 2026-06 | 30 | 90% | +12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 88% |
| Tue | 52 | 92% |
| Wed | 51 | 96% |
| Thu | 52 | 94% |
| Fri | 52 | 87% |
| Sat | 46 | 87% |
| Sun | 51 | 98% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…