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2,476 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 3 in 5.

Best time to leave 8–9 am 95% arrive on time from LAS
Best single flight F9 1283 LAS 07:00 → ONT 08:03 · 86% on time Avoid F9 2231 LAS 18:43 → ONT 19:51 · 78% 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).

6
7
8
9
10
11
12
13
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15
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20
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LAS
92
89
91
83
81
77
85
74
70
65
60
64
64
68
64
63
35
% 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 727 82% 1.0% 76 min
Southwest 1,749 74% 0.6% 49 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 1283 LAS 07:00 ONT 08:03 86%
F9 1357 LAS 13:59 ONT 15:09 82%
F9 2231 LAS 18:43 ONT 19:51 78%

All 12 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.
F9 1283 LAS 07:00 ONT 08:03 1h 03m 184 86% 1.1% 71 min
WN 4445 LAS 08:00 ONT 09:05 1h 05m 34 91% 0.0% 35 min
WN 4179 LAS 09:05 ONT 10:10 1h 05m 33 82% 0.0% 38 min
WN 2298 LAS 11:30 ONT 12:32 1h 02m 50 82% 0.0% 41 min
F9 1357 LAS 13:59 ONT 15:09 1h 10m 249 82% 0.4% 85 min
WN 3845 LAS 14:20 ONT 15:25 1h 05m 42 52% 0.0% 72 min
WN 3155 LAS 14:25 ONT 15:30 1h 05m 16 88% 0.0% 22 min
F9 2231 LAS 18:43 ONT 19:51 1h 08m 263 78% 1.5% 74 min
WN 208 LAS 19:10 ONT 20:10 1h 00m 26 56% 3.8% 56 min
WN 2015 LAS 19:20 ONT 20:20 1h 00m 16 94% 0.0% 21 min
WN 2301 LAS 21:45 ONT 22:48 1h 02m 16 38% 0.0% 40 min
WN 2135 LAS 22:25 ONT 23:32 1h 08m 26 23% 0.0% 58 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 LAS ONT 1h 10m 82% 1.0% 727 Flying now
Southwest LAS ONT 1h 05m 74% 0.6% 1,749 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