Leave before 9 am: 92% depart on time. After 4 pm it’s 3 in 5.
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 1109 | BWI 06:25 | STL 07:45 | 2h 20m | 57 | 91% | 1.8% | 22 min |
| WN 1012 | BWI 07:50 | STL 09:05 | 2h 15m | 12 | 100% | 0.0% | – |
| WN 1110 | BWI 09:35 | STL 10:50 | 2h 15m | 41 | 83% | 0.0% | 47 min |
| WN 733 | BWI 10:15 | STL 11:30 | 2h 15m | 16 | 75% | 0.0% | 84 min |
| WN 1111 | BWI 17:55 | STL 19:15 | 2h 20m | 58 | 62% | 3.4% | 63 min |
| WN 1118 | BWI 21:55 | STL 23:10 | 2h 15m | 41 | 50% | 2.4% | 92 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 | STL | 2h 20m | 83% | 1.1% | 1,268 | 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