Showing Southwest only (incl. its regional partners)All airlines ×

1,444 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: almost all depart on time. After 4 pm it’s 57%.

Best time to leave 6–7 am 98% arrive on time from SLC

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).

SLC

% 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 5 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 4205	SLC 06:25	LAS 06:50	1h 25m	42	100%	0.0%	–
WN 2408	SLC 10:20	LAS 10:45	1h 25m	16	75%	0.0%	43 min
WN 1242	SLC 11:05	LAS 11:30	1h 25m	41	80%	0.0%	46 min
WN 4338	SLC 14:50	LAS 15:15	1h 25m	42	52%	0.0%	35 min
WN 3745	SLC 20:30	LAS 20:55	1h 25m	50	58%	0.0%	79 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	SLC	LAS	1h 30m	78%	0.4%	1,444	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