I want to change my flight.
'Volo' — 'VO-lo'. Two syllables; stress on first. Literally 'flight' in Italian.
Say at an airline counter or when calling customer service when your plans have changed and you need a different flight date or time.
'Voglio cambiare' means 'I want to change'. 'Il mio volo' is 'my flight'. Airline change fees in Italy vary by fare class — 'basic' fares on Ryanair and Wizz Air are typically non-changeable for free.
Posso cambiare la data di partenza?
Can I change the departure date?
Specifically asks about changing the outbound date.
C'è una penale per il cambio volo?
Is there a fee for changing the flight?
Checks the change fee upfront.
Voglio anticipare il volo di un giorno.
I want to bring the flight forward by one day.
'Anticipare' means to bring earlier; 'posticipare' means to move later.
ITA Airways (Italy's current national carrier) allows free flight changes on fully flexible fares. Low-cost carriers are stricter. Travel insurance that covers 'cambio di programma' (change of plans) is strongly recommended for non-flexible Italian domestic bookings.