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6,035 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 5–6 am 97% arrive on time from DEN
Best single flight UA 2309 DEN 07:43 → SAN 09:05 · 90% on time Avoid UA 540 DEN 19:20 → SAN 20:46 · 65% 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
22
DEN
97
93
93
91
79
79
80
71
84
65
80
53
56
62
61
60
60
72
% 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.
Frontier 704 81% 1.0% 65 min
United 2,074 80% 0.4% 57 min
Alaska (incl. SkyWest) 869 79% 1.4% 51 min
Southwest 2,388 70% 0.5% 55 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 2309 DEN 07:43 SAN 09:05 90%
UA 1302 DEN 13:30 SAN 14:55 87%
UA 1281 DEN 15:55 SAN 17:20 85%
UA 1940 DEN 11:15 SAN 12:41 82%
F9 4989 DEN 22:29 SAN 23:51 77%
· · ·
UA 1835 DEN 21:00 SAN 22:25 68%
UA 540 DEN 19:20 SAN 20:46 65%

All 22 flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
AS 1617 DEN 06:00 SAN 07:34 2h 34m 52 94% 0.0% 41 min
WN 4331 DEN 06:32 SAN 07:58 2h 25m 50 100% 0.0% –
AS 3012flown by SkyWest DEN 06:40 SAN 08:21 2h 41m 81 83% 3.7% 32 min
F9 2421 DEN 07:40 SAN 09:05 2h 29m 101 84% 3.0% 54 min
UA 2309 DEN 07:43 SAN 09:05 2h 22m 343 90% 0.3% 48 min
WN 1699 DEN 08:15 SAN 09:40 2h 25m 58 86% 0.0% 30 min
WN 1700 DEN 10:32 SAN 12:00 2h 25m 68 81% 1.5% 41 min
UA 1940 DEN 11:15 SAN 12:41 2h 26m 347 82% 0.0% 52 min
AS 1618 DEN 11:32 SAN 13:05 2h 33m 52 80% 1.9% 32 min
WN 3503 DEN 12:55 SAN 14:15 2h 20m 58 45% 0.0% 47 min
UA 1302 DEN 13:30 SAN 14:55 2h 25m 345 87% 0.9% 65 min
AS 3017flown by SkyWest DEN 14:19 SAN 15:59 2h 40m 27 85% 0.0% 43 min
UA 1281 DEN 15:55 SAN 17:20 2h 25m 308 85% 0.3% 61 min
WN 4160 DEN 16:55 SAN 18:20 2h 25m 41 41% 0.0% 54 min
WN 1646 DEN 17:20 SAN 18:45 2h 25m 18 28% 0.0% 100 min
WN 1703 DEN 19:15 SAN 20:40 2h 25m 57 19% 0.0% 67 min
UA 540 DEN 19:20 SAN 20:46 2h 26m 364 65% 0.3% 56 min
AS 3217flown by SkyWest DEN 19:51 SAN 21:35 2h 44m 35 54% 0.0% 41 min
AS 3020flown by SkyWest DEN 19:59 SAN 21:40 2h 41m 52 27% 5.8% 57 min
UA 1835 DEN 21:00 SAN 22:25 2h 25m 252 68% 0.8% 56 min
WN 1704 DEN 21:30 SAN 23:00 2h 25m 56 50% 0.0% 71 min
F9 4989 DEN 22:29 SAN 23:51 2h 22m 232 77% 0.9% 54 min

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 SAN 2h 31m 81% 1.0% 704 Flying now
United DEN SAN 2h 25m 80% 0.4% 2,074 Flying now
Alaska DEN SAN 2h 40m 79% 1.4% 869 Flying now
Southwest DEN SAN 2h 25m 70% 0.5% 2,388 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