Distinguish a technical stop from a connection
For a journey beginning in Santiago, distinguish an intermediate stop from a connection that requires changing flights. A service described as direct may still have a technical stop. If your ticket lists São Paulo as an intermediate point, confirm whether you remain on the same service or transfer to another flight, and check boarding arrangements and the total journey time with the airline.
Compare the complete alternatives
A route through a South American or European hub can create different transit needs. Evaluate the full itinerary, not a historic announcement or an isolated segment. Check whether a connection changes the calendar date of arrival, and leave recovery time before the first substantial Istanbul visit.
Documents and the regional programme
Use official Turkish guidance for the passport and travel purpose. Any Greek-island or other international extension needs its own document review. Share confirmed flight details when discussing a city stay followed by Cappadocia or another region; a past airline launch does not establish today’s flight, transfer or included service.