There are two bus services to the Milano central station. One is http://www.orioshuttle.com/_eng/# (the service is till 23:30) the oneway ticket price is 6 euro. The schedule is in photos. The second one is Flixbus (the service is available till 23:30) one-way ticket price is about 10 dollars. The booking engine is available by this link http://bit.ly/FlixBus-booking-ru If you miss the buses, there is another opportunity to get Milan till 2:30 AM by GoOpti (the price is about 40 euro one-way ticket) Do not miss the bus! If you miss this chance - enjoy the airport facilities till 5:00 AM.