Serengeti and Zanzibar pair well when the itinerary protects enough time for each. The Serengeti is vast, and the best wildlife location changes with season; Zanzibar adds Stone Town heritage and coastal time rather than functioning as a simple airport-side beach stop.
Give the safari room
Choose a Serengeti area based on the month and your route. Include time for transfers between the park, airstrip, and lodge, and ask an operator to explain what is and is not included in a fly-in safari.
Use Zanzibar at a slower pace
Allow at least a few nights to experience the island beyond a quick transfer. Stone Town and the beach districts have different characters; account for the extra flight and ground transfers when choosing where to stay.
Check connections before confirming
Flight schedules and luggage limits can change. Confirm current connections, park fees, and accommodation details before making non-refundable bookings.