Flight OddsUA4574 IAD → PWM
United Airlines · Washington, DC to Portland, ME · 77 flights observed, 2026-01-06 to 2026-04-29 · 493 mi
UA4574 covers more than one route in the data window — the stats below are for IAD → PWM, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
80%
Median delay
-6 min
90th percentile
+47 min
Cancellation rate
4%
How often is UA4574 on time?
Across 77 flights on IAD → PWM from 2026-01-06 to 2026-04-29, UA4574 arrived within 15 minutes of schedule 80% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +47 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 59 | 80% |
| 16-30 min | 6 | 8% |
| 31-60 min | 3 | 4% |
| 61-120 min | 3 | 4% |
| 2+ hrs | 3 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 21 | 62% | +34 min |
| 2026-02 | 25 | 96% | -6 min |
| 2026-03 | 7 | 86% | -8 min |
| 2026-04 | 21 | 76% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 60% |
| Tue | 14 | 93% |
| Wed | 14 | 79% |
| Thu | 11 | 82% |
| Fri | 11 | 82% |
| Sat | 5 | 80% |
| Sun | 9 | 78% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…