Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s barely half.
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
Pick an hour to see this route’s flights leaving then.
Flights, best and worst
Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
No Southwest flight on this route ran 150+ times in the year.
All 9 Southwest flights in the current schedule
Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
| WN 4445 | LAS 08:00 | ONT 09:05 | 1h 05m | 34 | 91% | 0.0% | 35 min |
| WN 4179 | LAS 09:05 | ONT 10:10 | 1h 05m | 33 | 82% | 0.0% | 38 min |
| WN 2298 | LAS 11:30 | ONT 12:32 | 1h 02m | 50 | 82% | 0.0% | 41 min |
| WN 3845 | LAS 14:20 | ONT 15:25 | 1h 05m | 42 | 52% | 0.0% | 72 min |
| WN 3155 | LAS 14:25 | ONT 15:30 | 1h 05m | 16 | 88% | 0.0% | 22 min |
| WN 208 | LAS 19:10 | ONT 20:10 | 1h 00m | 26 | 56% | 3.8% | 56 min |
| WN 2015 | LAS 19:20 | ONT 20:20 | 1h 00m | 16 | 94% | 0.0% | 21 min |
| WN 2301 | LAS 21:45 | ONT 22:48 | 1h 02m | 16 | 38% | 0.0% | 40 min |
| WN 2135 | LAS 22:25 | ONT 23:32 | 1h 08m | 26 | 23% | 0.0% | 58 min |
Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| Southwest | LAS | ONT | 1h 05m | 74% | 0.6% | 1,749 | Flying now |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON