The Madrid routing
Madrid to Paro is one-stop. We recommend Qatar Airways MAD–DOH–DEL with Drukair DEL–PBH the following morning (Doha hub, Qsuite premium cabin, timed connection); or Turkish Airlines MAD–IST–DEL with Drukair DEL–PBH the next day (Istanbul hub, slightly longer routing). Iberia runs MAD–DEL direct seasonally; the Drukair connection requires a one-night Delhi overnight which adds a transit-visa complication for non-Indian-passport-holders, so we typically advise the Doha or Istanbul hub routing. The hub overnight is your booking on your terms; we recommend, brief the property, coordinate timing for the Drukair morning.