ONT → HOU Southwest Airlines
Southwest Airlines · Ontario, CA to Houston, TX · 362 flights, 2025-07-01 to 2026-06-30 · aggregated across 12 flight numbers
On-time arrival
67%
Median delay
+4 min
90th percentile
+43 min
Cancellation rate
0%
How on-time is Southwest Airlines from ONT to HOU?
Across every Southwest Airlines flight number on ONT → HOU (362 flights, 2025-07-01 to 2026-06-30), 67% arrived within 15 minutes of schedule. Median arrival delay +4 min; the worst 10% ran +43 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 244 | 67% |
| 16-30 min | 56 | 15% |
| 31-60 min | 36 | 10% |
| 61-120 min | 19 | 5% |
| 2+ hrs | 7 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 74% | +14 min |
| 2025-08 | 30 | 93% | +1 min |
| 2025-09 | 30 | 100% | -10 min |
| 2025-10 | 30 | 73% | +21 min |
| 2025-11 | 29 | 69% | +15 min |
| 2025-12 | 31 | 65% | +18 min |
| 2026-01 | 31 | 90% | -1 min |
| 2026-02 | 28 | 75% | +26 min |
| 2026-03 | 31 | 26% | +36 min |
| 2026-04 | 30 | 43% | +18 min |
| 2026-05 | 31 | 48% | +19 min |
| 2026-06 | 30 | 53% | +15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 60% |
| Tue | 53 | 85% |
| Wed | 52 | 75% |
| Thu | 51 | 65% |
| Fri | 51 | 49% |
| Sat | 52 | 75% |
| Sun | 51 | 63% |
WN flight numbers on ONT → HOU
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…