The best bet has a stop: Southwest via Kansas City (7h 45m) reaches Las Vegas on time 86% of the time, against 52% on the nonstop.
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).
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.
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 | DCA | LAS | 5h 15m | 52% | 1.1% | 365 | Flying now |
Alternatives with one stop
All connections →| SouthwestDetails → | DCA 06:00 → MCI 07:40WN 358 | 2h 05m Kansas City | MCI 09:45 → LAS 10:45WN 4532 | 7h 45m | 100% | 86% |
| SouthwestDetails → | DCA 07:30 → MDW 08:25WN 1442 | 1h 45m Chicago | MDW 10:10 → LAS 12:00WN 2794 | 7h 30m | 94% | 74% |
| SouthwestDetails → | DCA 12:00 → MDW 13:00WN 1445 | 1h 18m Chicago | MDW 14:18 → LAS 16:12WN 2795 | 7h 13m | 88% | 59% |
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