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3,850 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 3 in 5.

Best time to leave 8–9 am 92% arrive on time from DEN
Best single flight UA 2149 DEN 08:00 → SMF 09:35 · 94% on time Avoid UA 2132 DEN 19:37 → SMF 21:12 · 74% 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
22
DEN
92
93
81
80
85
64
76
46
67
76
30
67
50
50
48
% 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
Sacramento flights leaving DEN 4–5 pm: 1Close ×
UA 1208 DEN 16:03 SMF 17:41 2h 38m 363 82% 0.6% 68 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.
Frontier 183 82% 0.0% 66 min
United (incl. SkyWest) 1,794 82% 0.3% 61 min
Southwest 1,873 67% 0.3% 53 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 2149 DEN 08:00 SMF 09:35 94%
UA 1208 DEN 16:03 SMF 17:41 82%
UA 1415 DEN 11:30 SMF 13:05 82%
F9 3665 DEN 09:01 SMF 10:40 82%
UA 2132 DEN 19:37 SMF 21:12 74%
All 16 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.
Frontier DEN SMF 2h 39m 82% 0.0% 183 Flying now
United DEN SMF 2h 35m 82% 0.3% 1,794 Flying now
Southwest DEN SMF 2h 35m 67% 0.3% 1,873 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