Flight OddsWN4099 PHX → ONT
Southwest Airlines · Phoenix, AZ to Ontario, CA · 42 flights observed, 2025-11-02 to 2026-01-05 · 325 mi
WN4099 covers more than one route in the data window — the stats below are for PHX → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-7 min
90th percentile
+27 min
Cancellation rate
0%
How often is WN4099 on time?
Across 42 flights on PHX → ONT from 2025-11-02 to 2026-01-05, WN4099 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +27 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 | 36 | 86% |
| 16-30 min | 2 | 5% |
| 31-60 min | 4 | 10% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 22 | 91% | -4 min |
| 2025-12 | 18 | 89% | -5 min |
| 2026-01 | 2 | 0% | +37 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 86% |
| Tue | 6 | 83% |
| Wed | 8 | 88% |
| Thu | 8 | 75% |
| Fri | 6 | 83% |
| Sat | No data | — |
| Sun | 7 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…