No clear winner: Delta’s IAD → SLC flights land within a few points of 85% 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 432 | IAD 07:15 | SLC 09:52 | 85% |
All 1 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 432 | IAD 07:15 | SLC 09:52 | 4h 37m | 364 | 85% | 1.6% | 105 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 | IAD | SLC | 4h 37m | 85% | 1.6% | 364 | Flying now |
Alternatives with one stop
All connections →| DeltaDetails → | IAD 11:44 → MSP 13:39DL 3699 · flown by SkyWest | 46m Minneapolis | MSP 14:25 → SLC 16:16DL 2658 | 6h 36m | 77% | 62% |
| DeltaDetails → | IAD 12:37 → ATL 14:34DL 1444 | 50m Atlanta | ATL 15:24 → SLC 17:24DL 526 | 6h 47m | 75% | 59% |
| DeltaDetails → | IAD 17:29 → DTW 19:07DL 1787 | 1h 08m Detroit | DTW 20:15 → SLC 22:13DL 2117 | 6h 44m | 77% | 47% |
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