There is a network of ferries that conveniently runs between all of these top islands in Croatia to visit. These ships are certainly not glamorous sailboats, to say the least, but they do get you to the islands at a very affordable rate, allowing you more time (and money) to actually to explore the islands! It is not easy to see them all (like we said), but here is one idea for a week-long vacay.

Unlike its luxurious Caribbean neighbors, here you’ll only find more budget-friendly hotels and guesthouses. Everything needs to come by ship or airplane, so it’s not super cheap. However, since no non-natives can own property there is no influx of overdevelopment, keeping the island simple but beautiful. For a more rustic, non-touristy getaway, this might be the island for you!
I think that’s a great plan. Santorini is a must and Milos and Naxos are two islands that have both great beaches and lots to do and see away from the beach. Renting a car and exploring the interior villages of Naxos is a must-do and so is a boat tour around Milos. If you’re willing to cut Athens to 2 days, I would recommend Santorini 5 days, Milos 3 days, Naxos 3 days, and Athens 2 days.

By the end of the 1930s Aeroflot had become the world's largest airline, employing more than 4,000 pilots and 60,000 other service personnel and operating around 3,000 aircraft (of which 75% were considered obsolete by its own standards). During the Soviet era Aeroflot was synonymous with Russian civil aviation, as it was the only air carrier. It became the first airline in the world to operate sustained regular jet services on 15 September 1956 with the Tupolev Tu-104.
A complicating factor is that of origin-destination control ("O&D control"). Someone purchasing a ticket from Melbourne to Sydney (as an example) for A$200 is competing with someone else who wants to fly Melbourne to Los Angeles through Sydney on the same flight, and who is willing to pay A$1400. Should the airline prefer the $1400 passenger, or the $200 passenger plus a possible Sydney-Los Angeles passenger willing to pay $1300? Airlines have to make hundreds of thousands of similar pricing decisions daily.
The Greek islands have beautiful weather in the months just before and after peak season. It’s a great time to see the islands, save money, avoid the crowds, and still have great weather (though not as hot as July and August). If you want to see the super-popular islands of Santorini, Rhodes, Corfu, and Crete without the tourists then this is a great time to visit.