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2,476 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 64%.

Best time to leave 5–6 am 98% arrive on time from ONT
Best single flight F9 2232 ONT 11:58 → LAS 13:06 · 84% on time Avoid F9 4758 ONT 15:34 → LAS 16:46 · 70% 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
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15
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20
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ONT
96
94
93
92
84
80
81
70
66
70
76
63
62
58
66
67
62
75
% 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 728 78% 1.5% 91 min
Southwest 1,748 78% 0.7% 51 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.
F9 2232 ONT 11:58 LAS 13:06 84%
F9 4758 ONT 15:34 LAS 16:46 70%

All 10 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.
WN 3150 ONT 05:30 LAS 06:35 1h 05m 58 97% 0.0% 34 min
WN 3580 ONT 08:30 LAS 09:35 1h 05m 16 94% 0.0% 19 min
WN 2333 ONT 08:35 LAS 09:40 1h 05m 41 85% 2.4% 33 min
F9 2232 ONT 11:58 LAS 13:06 1h 10m 294 84% 1.0% 100 min
WN 3151 ONT 12:40 LAS 13:45 1h 05m 26 64% 3.8% 32 min
WN 2126 ONT 15:00 LAS 16:05 1h 05m 26 85% 0.0% 34 min
F9 4758 ONT 15:34 LAS 16:46 1h 12m 204 70% 3.4% 88 min
WN 873 ONT 16:10 LAS 17:20 1h 10m 16 81% 0.0% 38 min
WN 2213 ONT 16:40 LAS 17:45 1h 05m 50 34% 0.0% 48 min
WN 372 ONT 21:40 LAS 22:45 1h 08m 42 64% 0.0% 70 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 ONT LAS 1h 12m 78% 1.5% 728 Flying now
Southwest ONT LAS 1h 05m 78% 0.7% 1,748 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