Flight OddsDEN → BOS United Airlines
United Airlines · Denver, CO to Boston, MA · 1,911 flights, 2025-07-01 to 2026-06-30 · aggregated across 30 flight numbers
On-time arrival
78%
Median delay
-8 min
90th percentile
+55 min
Cancellation rate
1%
How on-time is United Airlines from DEN to BOS?
Across every United Airlines flight number on DEN → BOS (1,911 flights, 2025-07-01 to 2026-06-30), 78% arrived within 15 minutes of schedule. Median arrival delay -8 min; the worst 10% ran +55 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,468 | 78% |
| 16-30 min | 124 | 7% |
| 31-60 min | 132 | 7% |
| 61-120 min | 101 | 5% |
| 2+ hrs | 67 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 192 | 71% | +16 min |
| 2025-08 | 184 | 76% | +11 min |
| 2025-09 | 166 | 57% | +30 min |
| 2025-10 | 171 | 68% | +19 min |
| 2025-11 | 157 | 83% | +3 min |
| 2025-12 | 141 | 89% | -8 min |
| 2026-01 | 119 | 90% | -9 min |
| 2026-02 | 114 | 85% | -2 min |
| 2026-03 | 146 | 79% | +4 min |
| 2026-04 | 149 | 79% | -4 min |
| 2026-05 | 174 | 85% | -7 min |
| 2026-06 | 179 | 78% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 279 | 73% |
| Tue | 250 | 78% |
| Wed | 276 | 78% |
| Thu | 287 | 75% |
| Fri | 288 | 79% |
| Sat | 226 | 86% |
| Sun | 286 | 76% |
UA flight numbers on DEN → BOS
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…