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Showing Frontier only (incl. its regional partners)All airlines ×
1,023 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 92% depart on time. After 4 pm it’s 77%.

Best time to leave 12–1 pm 91% arrive on time from SLC
Best single flight F9 3862 SLC 08:16 → DEN 10:01 · 81% on time Avoid F9 3982 SLC 15:41 → DEN 17:21 · 78% 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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81
% 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.
F9 3862 SLC 08:16 DEN 10:01 81%
F9 4252 SLC 22:50 DEN 00:38 80%
F9 3982 SLC 15:41 DEN 17:21 78%

All 5 Frontier 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.
F9 3220 SLC 06:05 DEN 07:43 1h 38m 134 84% 0.7% 77 min
F9 3862 SLC 08:16 DEN 10:01 1h 39m 360 81% 0.3% 49 min
F9 3982 SLC 15:41 DEN 17:21 1h 40m 243 78% 0.8% 92 min
F9 4236 SLC 17:32 DEN 19:06 1h 34m 121 77% 1.7% 106 min
F9 4252 SLC 22:50 DEN 00:38 1h 48m 165 80% 1.2% 97 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.
Frontier SLC DEN 1h 39m 80% 0.8% 1,023 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