Mexico City and Cancún are distinct starting points
Compare the actual itinerary from Mexico City or Cancún rather than assuming identical routing. A traveller beginning in Monterrey, Guadalajara or another city may need an additional domestic sector. Check whether a through service includes a stop and whether separate tickets change baggage or connection responsibilities.
Understand the arrival and transit points
Use the full Turkish airport name and code; Istanbul Airport and Sabiha Gökçen are not interchangeable. A connection through a US or European hub can have separate transit requirements. The full journey needs to fit the intended first hotel and any onward domestic flight, with time for entry formalities and recovery.
Use the applicable official entry channel
Check current Turkish guidance for your passport and, where applicable, the official e-Visa process. A past article’s validity or exemption statement is not an approval. Verify the travel-document details and intended entry pattern before confirming the local route.