Flight OddsIAD → PWM United Airlines
United Airlines · Washington, DC to Portland, ME · 1,156 flights, 2025-07-01 to 2026-06-30 · aggregated across 37 flight numbers
On-time arrival
84%
Median delay
-11 min
90th percentile
+37 min
Cancellation rate
2%
How on-time is United Airlines from IAD to PWM?
Across every United Airlines flight number on IAD → PWM (1,156 flights, 2025-07-01 to 2026-06-30), 84% arrived within 15 minutes of schedule. Median arrival delay -11 min; the worst 10% ran +37 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 944 | 84% |
| 16-30 min | 62 | 5% |
| 31-60 min | 43 | 4% |
| 61-120 min | 28 | 2% |
| 2+ hrs | 52 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 112 | 75% | +30 min |
| 2025-08 | 109 | 92% | -8 min |
| 2025-09 | 94 | 93% | -11 min |
| 2025-10 | 113 | 85% | +6 min |
| 2025-11 | 106 | 79% | +16 min |
| 2025-12 | 88 | 60% | +26 min |
| 2026-01 | 68 | 68% | +31 min |
| 2026-02 | 53 | 94% | -6 min |
| 2026-03 | 64 | 86% | +6 min |
| 2026-04 | 90 | 83% | +0 min |
| 2026-05 | 117 | 93% | -1 min |
| 2026-06 | 115 | 91% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 157 | 81% |
| Tue | 157 | 89% |
| Wed | 162 | 82% |
| Thu | 166 | 80% |
| Fri | 169 | 85% |
| Sat | 151 | 86% |
| Sun | 167 | 83% |
UA flight numbers on IAD → PWM
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…