Flight OddsUA3997 BTV → IAD
United Airlines · Burlington, VT to Washington, DC · 31 flights observed, 2026-03-30 to 2026-04-29 · 441 mi
UA3997 covers more than one route in the data window — the stats below are for BTV → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
90%
Median delay
-12 min
90th percentile
+14 min
Cancellation rate
0%
How often is UA3997 on time?
Across 31 flights on BTV → IAD from 2026-03-30 to 2026-04-29, UA3997 arrived within 15 minutes of schedule 90% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +14 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 | 28 | 90% |
| 16-30 min | 2 | 6% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 2 | 100% | -15 min |
| 2026-04 | 29 | 90% | -1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | 5 | 100% |
| Wed | 5 | 100% |
| Thu | 4 | 75% |
| Fri | 4 | 100% |
| Sat | 4 | 100% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…