Given its island nature, your arrival options of boat or plane shouldn’t come as a surprise. The less likely option, you can actually take a ferry across from Sicily, with up to 15 ferry crossings a week. It’s far more likely though that you’ll fly in to Malta’s
Luqa Airport. Services by the national airline, Air Malta as well budget carriers like Ryanair, finding flights from Europe shouldn’t be too tough. Flying from Italy is particularly easy and cheap.