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1,819 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 94% depart on time. After 4 pm it’s 4 in 5.

Best time to leave 8–9 am 96% arrive on time from DEN
Best single flight UA 5975 DEN 07:40 → FSD 10:23 · 94% on time Avoid F9 2108 DEN 16:42 → FSD 19:19 · 76% 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).

7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
DEN
91
97
94
84
87
72
79
67
83
79
% 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
Sioux Falls flights leaving DEN 9–10 am: 1Close ×
UA 4759flown by SkyWest DEN 09:55 FSD 12:35 1h 40m 362 89% 0.8% 54 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
United (incl. SkyWest) 1,669 84% 1.0% 82 min
Frontier 150 76% 0.0% 81 min

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.
UA 5975flown by SkyWest DEN 07:40 FSD 10:23 94%
UA 4759flown by SkyWest DEN 09:55 FSD 12:35 89%
UA 5378flown by SkyWest DEN 13:40 FSD 16:23 86%
UA 5700flown by SkyWest DEN 21:10 FSD 23:53 79%
UA 645 DEN 17:28 FSD 20:08 78%
· · ·
F9 2108 DEN 16:42 FSD 19:19 76%
All 7 flights on this route →

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.
United DEN FSD 1h 43m 84% 1.0% 1,669 Flying now
Frontier DEN FSD 1h 38m 76% 0.0% 150 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