Southwest Airlines WN3670 On Time BOS Boston → STL St. Louis 2h 55m 1,681km / 1,037mi 25. May 2025 DEPARTURE 15:20 EDT 19:20 UTC TERMINAL: B ARRIVAL 17:15 CDT 22:15 UTC TERMINAL: 2 AIRLINE Southwest Airlines WN / SWA FREQUENCY 4x per week DISTANCE 1,681km FLIGHTS/WEEK 34 PUNCTUALITY 83%