Flight OddsUA800 BOS → DEN
United Airlines · Boston, MA to Denver, CO · 275 flights observed, 2025-07-01 to 2026-06-30 · 1,754 mi
UA800 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
73%
Median delay
-2 min
90th percentile
+57 min
Cancellation rate
1%
How often is UA800 on time?
Across 275 flights on BOS → DEN from 2025-07-01 to 2026-06-30, UA800 arrived within 15 minutes of schedule 73% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +57 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 199 | 73% |
| 16-30 min | 24 | 9% |
| 31-60 min | 24 | 9% |
| 61-120 min | 17 | 6% |
| 2+ hrs | 8 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 48% | +34 min |
| 2025-08 | 18 | 56% | +15 min |
| 2025-10 | 5 | 80% | +20 min |
| 2025-11 | 24 | 79% | +21 min |
| 2025-12 | 27 | 74% | +15 min |
| 2026-01 | 21 | 81% | +1 min |
| 2026-02 | 24 | 88% | 0 min |
| 2026-03 | 31 | 81% | +7 min |
| 2026-04 | 30 | 80% | -1 min |
| 2026-05 | 31 | 71% | +6 min |
| 2026-06 | 30 | 73% | +6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 41 | 83% |
| Tue | 37 | 78% |
| Wed | 40 | 75% |
| Thu | 41 | 59% |
| Fri | 41 | 71% |
| Sat | 30 | 83% |
| Sun | 42 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…