Flight OddsHOU → ONT Southwest Airlines
Southwest Airlines · Houston, TX to Ontario, CA · 362 flights, 2025-07-01 to 2026-06-30 · aggregated across 17 flight numbers
On-time arrival
82%
Median delay
-3 min
90th percentile
+30 min
Cancellation rate
0%
How on-time is Southwest Airlines from HOU to ONT?
Across every Southwest Airlines flight number on HOU → ONT (362 flights, 2025-07-01 to 2026-06-30), 82% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +30 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 296 | 82% |
| 16-30 min | 28 | 8% |
| 31-60 min | 10 | 3% |
| 61-120 min | 15 | 4% |
| 2+ hrs | 10 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 97% | -3 min |
| 2025-08 | 30 | 83% | +8 min |
| 2025-09 | 30 | 93% | +1 min |
| 2025-10 | 30 | 77% | +13 min |
| 2025-11 | 29 | 76% | +9 min |
| 2025-12 | 31 | 84% | +1 min |
| 2026-01 | 30 | 93% | -10 min |
| 2026-02 | 27 | 89% | +7 min |
| 2026-03 | 31 | 81% | +9 min |
| 2026-04 | 30 | 80% | +8 min |
| 2026-05 | 30 | 80% | +4 min |
| 2026-06 | 30 | 57% | +27 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 80% |
| Tue | 52 | 85% |
| Wed | 52 | 87% |
| Thu | 51 | 90% |
| Fri | 51 | 82% |
| Sat | 52 | 75% |
| Sun | 50 | 78% |
WN flight numbers on HOU → ONT
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…