Southwest Airlines WN3670 On Time BOS Boston → STL St. Louis 2h 55m 1,681km / 1,037mi 01. Jun 2025 DEPARTURE 13:17 EDT 17:17 UTC 13:10 +7 minutes TERMINAL: B GATE: B33 ARRIVAL 15:05 CDT 20:05 UTC TERMINAL: 2 GATE: E12 AIRLINE Southwest Airlines WN / SWA FREQUENCY 4x per week DISTANCE 1,681km FLIGHTS/WEEK 34 PUNCTUALITY 84%