Flight OddsUA333 BOS → LAX
United Airlines · Boston, MA to Los Angeles, CA · 198 flights observed, 2025-07-01 to 2026-03-02 · 2,611 mi
UA333 covers more than one route in the data window — the stats below are for BOS → LAX, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
66%
Median delay
+1 min
90th percentile
+88 min
Cancellation rate
2%
How often is UA333 on time?
Across 198 flights on BOS → LAX from 2025-07-01 to 2026-03-02, UA333 arrived within 15 minutes of schedule 66% of the time. The median arrival delay was +1 min, and the worst 10% of flights arrived +88 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 128 | 66% |
| 16-30 min | 24 | 12% |
| 31-60 min | 14 | 7% |
| 61-120 min | 13 | 7% |
| 2+ hrs | 15 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 58% | +21 min |
| 2025-08 | 18 | 78% | +5 min |
| 2025-09 | 6 | 50% | +51 min |
| 2025-10 | 31 | 58% | +39 min |
| 2025-11 | 30 | 67% | +15 min |
| 2025-12 | 30 | 67% | +27 min |
| 2026-01 | 26 | 69% | +10 min |
| 2026-02 | 20 | 75% | 0 min |
| 2026-03 | 2 | 100% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 28 | 64% |
| Tue | 21 | 81% |
| Wed | 27 | 70% |
| Thu | 30 | 50% |
| Fri | 29 | 72% |
| Sat | 30 | 70% |
| Sun | 29 | 59% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…