If you want to travel to the island by plane there flights from Athens International Airport Eleftherios Venizelos, from Macedonia airport in Thessaloniki and during the high season there are charter flights departing from many major cities of Europe to (and from) the National Airport of Kos Hippocrates. See the information below.
International Airport of Kos Hippocrates: Tel. +30 22420 56000
Olympic Airways: Tel. +30 210 9666666
Aegean Airlines: Tel. +30 801 1120000
If you want to travel by boat to Kos Island you must know that you will enjoy one of the best trips through the Aegean islands. Daily routs are linking the port of Piraeus with Kos and from Kos Island also is also connected by ferry boats with the Dodecanese Islands (Kos and Rhodes), the Islands of the Northeastern Aegean (Ikaria and Samos) and Turkey. For information on the routes of the Ferries for the period that you are visiting the island, see the information below.
Piraeus Port: Tel. +30 210 414-7800
Kos Island Port: Tel. +30 22420 26594-6
Blue Star Ferries: Tel. +30 22420 28914