Can I reuse a myki card from a Melbourne trip eighteen months ago?

Do not assume the balance is enough for an airport or regional journey. Check the current fare and payment rules for the exact route, then carry a backup way to obtain a new myki.

If the card is registered, the online account may help you see the balance. Otherwise use an official myki machine or staffed outlet to check it and top up before your first trip.

Check the card's printed expiry date and balance before travelling. A physical myki does not require the original online account merely to be presented at a reader, but expired cards need replacement.