Leave before 9 am: 88% depart on time. After 4 pm it’s 56%.
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 6 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 4142 | PHX 07:45 | COS 10:30 | 1h 45m | 42 | 79% | 0.0% | 37 min |
| WN 554 | PHX 08:50 | COS 11:35 | 1h 45m | 16 | 75% | 0.0% | 25 min |
| WN 3064 | PHX 16:40 | COS 19:20 | 1h 40m | 34 | 47% | 0.0% | 64 min |
| WN 3335 | PHX 20:15 | COS 22:55 | 1h 42m | 24 | 46% | 0.0% | 56 min |
| WN 4878 | PHX 22:40 | COS 01:25 | 1h 45m | 12 | 50% | 0.0% | 66 min |
| WN 425 | PHX 22:40 | COS 01:20 | 1h 40m | 13 | 54% | 0.0% | 47 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 | PHX | COS | 1h 40m | 75% | 0.1% | 1,001 | Flying now |
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