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Showing Southwest only (incl. its regional partners)All airlines ×
2,264 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am from Ontario or Burbank: 96% depart on time. After 4 pm it’s 3 in 4.

Best time to leave 7–8 am 95% arrive on time from BUR
Best airport pair ONT → MDW 91% on time, fewest cancelled (0.3%), 360 flights

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
23
LAX
87
92
73
44
37
41
56
77
BUR
95
96
83
79
LGB
90
85
81
71
ONT
97
83
% 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.

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.

No Southwest flight on this route ran 150+ times in the year.

All 9 Southwest 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 2464 LAX 05:05 MDW 11:05 4h 00m 16 81% 0.0% 34 min
WN 4398 LAX 05:10 MDW 11:10 4h 00m 41 90% 0.0% 24 min
WN 3156 BUR 07:25 MDW 13:20 3h 55m 42 98% 0.0% 19 min
WN 4542 LGB 08:15 MDW 14:05 3h 50m 26 83% 0.0% 42 min
WN 3292 LGB 11:00 MDW 16:50 3h 50m 16 100% 6.2% –
WN 734 LAX 11:45 MDW 17:40 3h 55m 49 55% 0.0% 54 min
WN 4541 LAX 18:20 MDW 00:20 3h 58m 42 37% 0.0% 46 min
WN 2413 LAX 23:55 MDW 05:55 4h 00m 58 86% 1.7% 35 min
WN 3153 ONT 23:55 MDW 05:40 3h 45m 58 83% 0.0% 32 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.
Southwest ONT MDW 3h 45m 91% 0.3% 360 Flying now
Southwest BUR MDW 4h 00m 88% 0.6% 322 Flying now
Southwest LGB MDW 3h 50m 84% 1.1% 284 Flying now
Southwest LAX MDW 3h 55m 79% 0.6% 1,298 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