Southwest Airlines WN3670 On Time BOS Boston → STL St. Louis 2h 55m 1,681km / 1,037mi 03. Jun 2025 DEPARTURE 07:05 EDT 11:05 UTC 0 minutes TERMINAL: B GATE: B34 ARRIVAL 09:00 CDT 14:00 UTC TERMINAL: 2 GATE: E10 AIRLINE Southwest Airlines WN / SWA FREQUENCY 4x per week DISTANCE 1,681km FLIGHTS/WEEK 34 PUNCTUALITY 86%