We recommend taking a windproof jacket or windbreaker, light trekking pants, a hoodie, a set of ordinary city clothes, a swimsuit / swimming trunks for the sea. From shoes: sneakers.
Charter flights are additional flights, unlike regular ones, they do not have a clear schedule. They are designed to transport a certain group of people. Most often, such flights are organized by tour operators to deliver groups of tourists who have bought a tour. The price of a charter ticket is less.