Flight OddsUA4597 BTV → IAD
United Airlines · Burlington, VT to Washington, DC · 76 flights observed, 2026-03-05 to 2026-05-20 · 441 mi
UA4597 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
75%
Median delay
-5 min
90th percentile
+70 min
Cancellation rate
1%
How often is UA4597 on time?
Across 76 flights on BTV → IAD from 2026-03-05 to 2026-05-20, UA4597 arrived within 15 minutes of schedule 75% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +70 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 | 56 | 75% |
| 16-30 min | 9 | 12% |
| 31-60 min | 1 | 1% |
| 61-120 min | 8 | 11% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 27 | 67% | +58 min |
| 2026-04 | 29 | 76% | +4 min |
| 2026-05 | 19 | 84% | -9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 11 | 64% |
| Tue | 11 | 64% |
| Wed | 10 | 60% |
| Thu | 11 | 73% |
| Fri | 11 | 82% |
| Sat | 10 | 90% |
| Sun | 11 | 91% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…