Flight OddsUA4481 PWM → IAD
United Airlines · Portland, ME to Washington, DC · 113 flights observed, 2026-01-06 to 2026-04-29 · 493 mi
UA4481 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
77%
Median delay
-11 min
90th percentile
+77 min
Cancellation rate
3%
How often is UA4481 on time?
Across 113 flights on PWM → IAD from 2026-01-06 to 2026-04-29, UA4481 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +77 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 85 | 77% |
| 16-30 min | 5 | 5% |
| 31-60 min | 6 | 5% |
| 61-120 min | 8 | 7% |
| 2+ hrs | 6 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 24 | 54% | +27 min |
| 2026-02 | 27 | 78% | +1 min |
| 2026-03 | 31 | 81% | +17 min |
| 2026-04 | 28 | 93% | -20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 14 | 79% |
| Tue | 17 | 94% |
| Wed | 17 | 82% |
| Thu | 16 | 69% |
| Fri | 16 | 81% |
| Sat | 15 | 73% |
| Sun | 15 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…