You can arrive by plane in one of the three main airports serving the North East of Italy:
Trieste (Ronchi dei Legionari airport),
Treviso.
The best international connections are through the Venice airport (IATA code VCE). From this airport you may easily reach Udine by train using the close railway station of Mestre . The nearest airport to Udine is at Ronchi dei Legionari also known as Trieste airport (IATA code TRS). From Trieste airport there is a bus services connecting Udine run by APT Gorizia (line number 51). Schedules and fares are available at aptGorizia or calling the bus operator (+39–0481–593511). The following low cost companies fly from/to Venezia airport (Marco Polo):