The currency used in Rethymnon is the Euro. There are numerous ATM machines and foreign exchange facilities located around the city, but for the best deal, we suggest that you buy your travel money before you leave the UK. You can buy Greek currency online or from any Thomas Cook store, which is cheaper than buying it at the airport. If you’re not sure how much money you want to take away with you, then the Thomas Cook Cash Passport might be just the thing for you.