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5,461 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 7 in 10.

Best time to leave 5–6 am 96% arrive on time from SFO
Best single flight UA 2436 SFO 18:56 → DEN 22:44 · 88% on time Avoid F9 1094 SFO 12:38 → DEN 16:25 · 43% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
SFO
96
94
94
88
68
54
68
63
51
61
40
69
65
81
61
80
66
% 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.

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 3,410 83% 0.2% 59 min
Frontier 638 71% 0.8% 62 min
Southwest 1,413 61% 0.8% 60 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 2436 SFO 18:56 DEN 22:44 88%
F9 1230 SFO 06:00 DEN 09:49 88%
UA 301 SFO 21:00 DEN 00:47 86%
UA 2348 SFO 08:31 DEN 12:22 84%
UA 1430 SFO 16:10 DEN 20:01 79%
· · ·
UA 1596 SFO 14:20 DEN 18:11 71%
F9 1094 SFO 12:38 DEN 16:25 43%
All 21 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 SFO DEN 2h 40m 83% 0.2% 3,410 Flying now
Frontier SFO DEN 2h 49m 71% 0.8% 638 Flying now
Southwest SFO DEN 2h 30m 61% 0.8% 1,413 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