Flight OddsUA4566 PWM → IAD
United Airlines · Portland, ME to Washington, DC · 19 flights observed, 2025-12-18 to 2026-01-05 · 493 mi
UA4566 covers more than one route in the data window — the stats below are for PWM → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
47%
Median delay
+31 min
90th percentile
+252 min
Cancellation rate
0%
How often is UA4566 on time?
Across 19 flights on PWM → IAD from 2025-12-18 to 2026-01-05, UA4566 arrived within 15 minutes of schedule 47% of the time. The median arrival delay was +31 min, and the worst 10% of flights arrived +252 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 9 | 47% |
| 16-30 min | 0 | 0% |
| 31-60 min | 4 | 21% |
| 61-120 min | 2 | 11% |
| 2+ hrs | 4 | 21% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 14 | 50% | +45 min |
| 2026-01 | 5 | 40% | +122 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 67% |
| Tue | 2 | 50% |
| Wed | 2 | 0% |
| Thu | 3 | 67% |
| Fri | 3 | 67% |
| Sat | 3 | 67% |
| Sun | 3 | 0% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…