Are there non Stop flights to Sisely? What are the best airlines to take from Newark or JFK?
Do you mean Sicily??
It is best to search in an airline site like Kayak.com or Google Flights to see the routes. You have to spell the destination city though, and only Palermo and Catania in Sicily have airports. You will most likely have to go through Rome or Naples.
And Sicily is in Italy, not Montenegro. If you are questioning a location in Montenegro, I am sorry, I don’t know a Sisly and neither does the internet it seems.