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Showing Southwest only (incl. its regional partners)All airlines ×
362 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 2 in 3.

Best time to leave 8–9 am 90% arrive on time from HOU

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).

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% 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 2 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 4391 HOU 07:45 ONT 08:55 3h 10m 26 77% 0.0% 38 min
WN 1967 HOU 21:25 ONT 22:35 3h 10m 16 50% 0.0% 43 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 HOU ONT 3h 25m 80% 0.3% 362 Flying now

Alternatives with one stop

All connections →
SouthwestDetails → HOU 06:20 → PHX 06:55WN 2062 55m Phoenix PHX 07:50 → ONT 09:05WN 759 4h 45m 90% 82%
SouthwestDetails → HOU 12:00 → PHX 12:40WN 2063 1h 15m Phoenix PHX 13:55 → ONT 15:05WN 670 5h 05m 85% 60%
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