Flight OddsIAH → SEA United Airlines
United Airlines · Houston, TX to Seattle, WA · 1,243 flights, 2025-07-01 to 2026-06-30 · aggregated across 32 flight numbers
On-time arrival
78%
Median delay
-3 min
90th percentile
+46 min
Cancellation rate
0%
How on-time is United Airlines from IAH to SEA?
Across every United Airlines flight number on IAH → SEA (1,243 flights, 2025-07-01 to 2026-06-30), 78% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +46 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 963 | 78% |
| 16-30 min | 99 | 8% |
| 31-60 min | 82 | 7% |
| 61-120 min | 63 | 5% |
| 2+ hrs | 29 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 142 | 66% | +18 min |
| 2025-08 | 136 | 68% | +14 min |
| 2025-09 | 118 | 85% | +4 min |
| 2025-10 | 110 | 85% | +3 min |
| 2025-11 | 89 | 81% | -1 min |
| 2025-12 | 105 | 76% | +2 min |
| 2026-01 | 72 | 79% | +3 min |
| 2026-02 | 56 | 82% | -4 min |
| 2026-03 | 81 | 79% | +9 min |
| 2026-04 | 90 | 90% | -3 min |
| 2026-05 | 107 | 86% | +2 min |
| 2026-06 | 130 | 70% | +18 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 180 | 78% |
| Tue | 171 | 86% |
| Wed | 166 | 79% |
| Thu | 185 | 78% |
| Fri | 184 | 76% |
| Sat | 170 | 76% |
| Sun | 180 | 73% |
UA flight numbers on IAH → SEA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…