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Showing Delta only (incl. its regional partners)All airlines ×
981 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s SLC → STL flights land within a few points of 85% on time whatever the hour.

Best time to leave 9–10 am 91% arrive on time from SLC
Best single flight DL 2455 SLC 09:41 → STL 13:36 · 92% on time Avoid DL 1492 SLC 15:10 → STL 19:03 · 81% on time

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).

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SLC
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% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

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 2455 SLC 09:41 STL 13:36 92%
DL 2666 SLC 20:50 STL 00:43 81%
DL 1492 SLC 15:10 STL 19:03 81%

All 3 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 2455 SLC 09:41 STL 13:36 2h 55m 295 92% 0.0% 51 min
DL 1492 SLC 15:10 STL 19:03 2h 53m 217 81% 0.9% 74 min
DL 2666 SLC 20:50 STL 00:43 2h 53m 355 81% 0.6% 67 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 SLC STL 2h 53m 85% 0.6% 981 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

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