Baltimore (MTN) → Bedford (BED)
Martin State Airport → Laurence G Hanscom Field
Departure times are local to airport MTN.
Baltimore (MTN) — Bedford (BED): how long is the flight?
MTN — BED: scheduled duration in the saved data is 4 hr 8 min, the median of available flights.
MTN — BED: what is the distance?
The straight-line distance between airports MTN and BED is about 555 km, not the actual flight path.