Flight OddsUA3521 BUF → EWR
United Airlines · Buffalo, NY to Newark, NJ · 23 flights observed, 2026-03-06 to 2026-03-28 · 282 mi
UA3521 covers more than one route in the data window — the stats below are for BUF → EWR, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
95%
Median delay
-23 min
90th percentile
-2 min
Cancellation rate
4%
How often is UA3521 on time?
Across 23 flights on BUF → EWR from 2026-03-06 to 2026-03-28, UA3521 arrived within 15 minutes of schedule 95% of the time. The median arrival delay was -23 min, and the worst 10% of flights arrived -2 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 21 | 95% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 22 | 95% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 100% |
| Tue | 3 | 100% |
| Wed | 3 | 100% |
| Thu | 2 | 100% |
| Fri | 4 | 100% |
| Sat | 4 | 75% |
| Sun | 3 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…