Detroit (YIP) → Springfield (SGF)
Willow Run Airport → Springfield Branson National Airport
Departure times are local to airport YIP.
Detroit (YIP) — Springfield (SGF): how long is the flight?
YIP — SGF: scheduled duration in the saved data is 2 hr 38 min, the median of available flights.
YIP — SGF: what is the distance?
The straight-line distance between airports YIP and SGF is about 1,008 km, not the actual flight path.