Flight OddsUA1709 IAD → BOS
United Airlines · Washington, DC to Boston, MA · 109 flights observed, 2025-08-19 to 2026-01-05 · 412 mi
UA1709 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
73%
Median delay
-4 min
90th percentile
+45 min
Cancellation rate
0%
How often is UA1709 on time?
Across 109 flights on IAD → BOS from 2025-08-19 to 2026-01-05, UA1709 arrived within 15 minutes of schedule 73% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +45 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 | 80 | 73% |
| 16-30 min | 10 | 9% |
| 31-60 min | 10 | 9% |
| 61-120 min | 6 | 6% |
| 2+ hrs | 3 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 77% | +3 min |
| 2025-09 | 24 | 58% | +25 min |
| 2025-10 | 6 | 50% | +17 min |
| 2025-11 | 30 | 77% | -1 min |
| 2025-12 | 31 | 81% | +7 min |
| 2026-01 | 5 | 100% | -17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 16 | 75% |
| Tue | 16 | 69% |
| Wed | 16 | 69% |
| Thu | 15 | 67% |
| Fri | 15 | 67% |
| Sat | 15 | 93% |
| Sun | 16 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…