Flight OddsUA3999 BDL → IAD
United Airlines · Hartford, CT to Washington, DC · 35 flights observed, 2026-05-21 to 2026-06-30 · 325 mi
UA3999 covers more than one route in the data window — the stats below are for BDL → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
70%
Median delay
-11 min
90th percentile
+100 min
Cancellation rate
6%
How often is UA3999 on time?
Across 35 flights on BDL → IAD from 2026-05-21 to 2026-06-30, UA3999 arrived within 15 minutes of schedule 70% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +100 min or later. 6% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 23 | 70% |
| 16-30 min | 5 | 15% |
| 31-60 min | 1 | 3% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 3 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 8 | 75% | +8 min |
| 2026-06 | 25 | 68% | +50 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 67% |
| Tue | 6 | 67% |
| Wed | 4 | 75% |
| Thu | 6 | 67% |
| Fri | 5 | 80% |
| Sat | No data | — |
| Sun | 6 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…