Flight OddsUA647 BOS → DEN
United Airlines · Boston, MA to Denver, CO · 364 flights observed, 2025-07-01 to 2026-06-30 · 1,754 mi
UA647 covers more than one route in the data window — the stats below are for BOS → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
91%
Median delay
-9 min
90th percentile
+13 min
Cancellation rate
2%
How often is UA647 on time?
Across 364 flights on BOS → DEN from 2025-07-01 to 2026-06-30, UA647 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +13 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 327 | 91% |
| 16-30 min | 11 | 3% |
| 31-60 min | 13 | 4% |
| 61-120 min | 6 | 2% |
| 2+ hrs | 1 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 97% | -6 min |
| 2025-08 | 31 | 90% | -1 min |
| 2025-09 | 30 | 90% | -2 min |
| 2025-10 | 31 | 94% | -8 min |
| 2025-11 | 29 | 93% | -6 min |
| 2025-12 | 31 | 84% | +4 min |
| 2026-01 | 30 | 83% | +2 min |
| 2026-02 | 24 | 88% | -11 min |
| 2026-03 | 30 | 87% | -9 min |
| 2026-04 | 30 | 97% | -15 min |
| 2026-05 | 31 | 97% | -12 min |
| 2026-06 | 30 | 97% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 50 | 90% |
| Tue | 52 | 92% |
| Wed | 49 | 94% |
| Thu | 52 | 92% |
| Fri | 51 | 92% |
| Sat | 52 | 88% |
| Sun | 52 | 90% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…