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2,560 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 58%.

Best time to leave 8–9 am 95% arrive on time from DEN
Best single flight UA 670 DEN 11:45 → SJC 13:24 · 89% on time Avoid UA 2745 DEN 19:30 → SJC 21:09 · 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
94
94
84
83
82
80
76
69
62
48
67
45
47
% 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
San Jose flights leaving DEN 9–10 am: 1Close ×
WN 2384 DEN 09:30 SJC 11:00 2h 30m 26 73% 0.0% 45 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 988 81% 0.0% 63 min
Southwest 1,526 70% 0.6% 52 min
Frontier 46 – 0.0% 27 min

Dimmed: fewer than 150 flights in the year, too few to rank.

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 670 DEN 11:45 SJC 13:24 89%
UA 2745 DEN 19:30 SJC 21:09 76%
All 11 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 SJC 2h 39m 81% 0.0% 988 Flying now
Southwest DEN SJC 2h 35m 70% 0.6% 1,526 Flying now
Frontier DEN SJC 2h 40m 83% 0.0% 46 Not 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