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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
Denver flights leaving SFO 9–10 pm: 2Close ×
UA 301 SFO 21:00 DEN 00:47 2h 47m 207 86% 0.5% 50 min
F9 3440 SFO 21:39 DEN 01:34 2h 51m 110 61% 0.0% 74 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 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