The best bet has a stop: Southwest via Denver (7h 20m) reaches Phoenix on time 87% of the time, against 74% 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 | RDU | PHX | 4h 55m | 75% | 1.2% | 321 | Flying now |
Alternatives with one stop
All connections →| SouthwestDetails → | RDU 05:15 → DEN 06:50WN 4083 | 1h 50m Denver | DEN 08:40 → PHX 09:35WN 431 | 7h 20m | 98% | 87% |
| SouthwestDetails → | RDU 06:38 → BNA 07:08WN 3418 | 54m Nashville | BNA 08:02 → PHX 09:38WN 3770 | 5h 59m | 89% | 69% |
| SouthwestDetails → | RDU 13:20 → BWI 14:35WN 297 | 1h 10m Baltimore | BWI 15:45 → PHX 17:35WN 1050 | 7h 15m | 88% | 53% |
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