I would like to check in for the flight to London.
vor-REI — the 'ei' is a diphthong, stress on second syllable. 'Volo' is VOH-lo.
When you approach the check-in desk and need to announce your intention to the agent.
'Vorrei' is the conditional of 'volere' (to want), making it more polite than 'voglio' (I want). This is the standard polite form for making requests in Italian airports, shops, and restaurants. 'Per il volo per' (for the flight to) is the natural phrase to specify your destination.
Ho già fatto il check-in online.
I already checked in online.
Say this to go straight to bag drop
Posso fare il check-in qui?
Can I check in here?
Useful if you are unsure you are at the right desk
Il check-in è già chiuso?
Is check-in already closed?
For when you are running late
Italy's main carriers include ITA Airways (formerly Alitalia), Ryanair, and easyJet for budget travel. Always carry a valid ID — Italians can travel within the EU with just their carta d'identità (national ID card) without a passport.