Flight OddsUA1047 IAD → BOS
United Airlines · Washington, DC to Boston, MA · 21 flights observed, 2025-09-02 to 2025-09-22 · 412 mi
UA1047 covers more than one route in the data window — the stats below are for IAD → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
5%
Median delay
+48 min
90th percentile
+159 min
Cancellation rate
5%
How often is UA1047 on time?
Across 21 flights on IAD → BOS from 2025-09-02 to 2025-09-22, UA1047 arrived within 15 minutes of schedule 5% of the time. The median arrival delay was +48 min, and the worst 10% of flights arrived +159 min or later. 5% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1 | 5% |
| 16-30 min | 6 | 30% |
| 31-60 min | 7 | 35% |
| 61-120 min | 3 | 15% |
| 2+ hrs | 3 | 15% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 20 | 5% | +59 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 0% |
| Tue | 3 | 0% |
| Wed | 3 | 0% |
| Thu | 3 | 0% |
| Fri | 3 | 0% |
| Sat | 2 | 50% |
| 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…