Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s barely half.
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 10 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 4436 | BWI 06:05 | DEN 07:50 | 3h 45m | 42 | 76% | 0.0% | 29 min |
| WN 935 | BWI 07:25 | DEN 09:15 | 3h 50m | 47 | 83% | 0.0% | 43 min |
| WN 1080 | BWI 08:20 | DEN 10:15 | 3h 55m | 16 | 75% | 0.0% | 37 min |
| WN 275 | BWI 09:40 | DEN 11:25 | 3h 45m | 50 | 84% | 0.0% | 48 min |
| WN 937 | BWI 12:50 | DEN 14:35 | 3h 45m | 34 | 47% | 0.0% | 33 min |
| WN 924 | BWI 13:10 | DEN 15:00 | 3h 50m | 16 | 71% | 6.2% | 44 min |
| WN 938 | BWI 15:10 | DEN 17:05 | 3h 55m | 42 | 65% | 0.0% | 74 min |
| WN 939 | BWI 16:55 | DEN 18:55 | 4h 00m | 57 | 56% | 7.0% | 74 min |
| WN 1178 | BWI 18:40 | DEN 20:40 | 4h 00m | 16 | 43% | 12.5% | 86 min |
| WN 4214 | BWI 20:00 | DEN 22:00 | 4h 00m | 34 | 71% | 8.8% | 72 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 | BWI | DEN | 4h 00m | 74% | 1.5% | 1,900 | 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