Southwest Airlines WN5596 Landed BOS Boston → DEN Denver 4h 11m 0km / 0mi 29. Sep 2017 DEPARTURE 13:05 EDT 17:05 UTC 12:50 +15 minutes ARRIVAL 15:17 MDT 21:17 UTC 15:20 -3 minutes Boeing B737-800 N8620H AIRLINE Southwest Airlines WN / SWA FLIGHTS/WEEK 77 PUNCTUALITY 80%