Flight OddsWN4540 ONT → SJC
Southwest Airlines · Ontario, CA to San Jose, CA · 40 flights observed, 2025-11-02 to 2026-01-05 · 333 mi
WN4540 covers more than one route in the data window — the stats below are for ONT → SJC, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
+2 min
90th percentile
+45 min
Cancellation rate
0%
How often is WN4540 on time?
Across 40 flights on ONT → SJC from 2025-11-02 to 2026-01-05, WN4540 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +45 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 | 31 | 78% |
| 16-30 min | 2 | 5% |
| 31-60 min | 4 | 10% |
| 61-120 min | 2 | 5% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 19 | 74% | +27 min |
| 2025-12 | 17 | 82% | +6 min |
| 2026-01 | 4 | 75% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 83% |
| Tue | 3 | 100% |
| Wed | 1 | 100% |
| Thu | 3 | 100% |
| Fri | 8 | 75% |
| Sat | 9 | 67% |
| Sun | 10 | 70% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…