No clear winner: Delta’s ONT → SLC flights land within a few points of 92% on time whatever the hour.
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.
| DL 2708 | ONT 06:00 | SLC 08:50 | 95% |
All 6 Delta 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.
| DL 2708 | ONT 06:00 | SLC 08:50 | 1h 50m | 365 | 95% | 0.5% | 107 min |
| DL 1302 | ONT 09:40 | SLC 12:28 | 1h 48m | 66 | 98% | 1.5% | 17 min |
| DL 3172 | ONT 13:00 | SLC 15:47 | 1h 47m | 55 | 95% | 0.0% | 55 min |
| DL 1006 | ONT 13:29 | SLC 16:18 | 1h 49m | 31 | 97% | 0.0% | 61 min |
| DL 4443flown by SkyWest | ONT 17:21 | SLC 20:17 | 1h 56m | 55 | 87% | 0.0% | 123 min |
| DL 3762flown by SkyWest | ONT 17:55 | SLC 20:47 | 1h 52m | 31 | 97% | 0.0% | 23 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.
| Delta | ONT | SLC | 1h 50m | 92% | 0.9% | 1,209 | 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