What to expect
Not every northern trip needs to be one long bus route. Flying from Lima lets you give Cajamarca a stay of its own. Search LIM–CJA and compare the whole offer: baggage, changes and arrival arrangements do not automatically fit the lowest fare.
How it fits into a journey
Fly to Cajamarca, settle in and start with the city. Give Belén and Cumbemayo their own visit blocks afterwards, booking the return or next leg separately.