Sibu (SBW) — Miri (MYY): how long is the flight?
SBW — MYY: scheduled duration in the saved data is 1 hr, the median of available flights.
SBW — MYY: what is the distance?
The straight-line distance between airports SBW and MYY is about 319 km, not the actual flight path.
Airlines on this route
The saved board for SBW — MYY lists these airlines: AirBorneo.