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

Leave before 9 am: 86% depart on time. After 4 pm it’s barely half.

Best time to leave 5–6 am 94% arrive on time from SFO
Best single flight F9 1850 SFO 15:51 → LAS 17:39 · 69% on time Avoid F9 4156 SFO 22:50 → LAS 00:44 · 55% 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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SFO
90
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34
47
77
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27
% 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 1850 SFO 15:51 LAS 17:39 69%
F9 4158 SFO 11:20 LAS 13:10 67%
F9 4156 SFO 22:50 LAS 00:44 55%

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 4158 SFO 11:20 LAS 13:10 1h 50m 281 67% 1.1% 67 min
F9 1850 SFO 15:51 LAS 17:39 1h 49m 191 69% 1.6% 83 min
F9 2486 SFO 17:41 LAS 19:34 1h 53m 97 68% 0.0% 100 min
F9 4402 SFO 21:00 LAS 22:28 1h 46m 105 65% 1.0% 101 min
F9 4156 SFO 22:50 LAS 00:44 1h 47m 204 55% 3.9% 107 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 SFO LAS 1h 49m 64% 1.7% 895 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