Flight OddsUA4238 BTV → IAD
United Airlines · Burlington, VT to Washington, DC · 40 flights observed, 2026-05-21 to 2026-06-30 · 441 mi
UA4238 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
85%
Median delay
-12 min
90th percentile
+114 min
Cancellation rate
0%
How often is UA4238 on time?
Across 40 flights on BTV → IAD from 2026-05-21 to 2026-06-30, UA4238 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +114 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 | 34 | 85% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 3 | 8% |
| 2+ hrs | 3 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 10 | 80% | +21 min |
| 2026-06 | 30 | 87% | +32 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 100% |
| Tue | 6 | 100% |
| Wed | 5 | 80% |
| Thu | 6 | 67% |
| Fri | 6 | 67% |
| Sat | 6 | 100% |
| Sun | 5 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…