You can purchase the transport tickets in the various metro stations, in the off-licenses and in any of Milan’s parking meters. From 2020 you'll have to load tickets onto an electronic card, RicaricaMi, of personal use.
Most useful tickets for tourists
A single ticket covers areas Mi1, Mi2, and Mi3 and is valid for 90 minutes since it is first punched into the validating machine. You can change metro lines during this time, but you cannot leave the metro station and then come back and use the same ticket. The price of a single urban ticket costs € 2 (US$ 2.20).
24-hour travel card
The one-day travel card is valid for 24 hours since it's first punched into a validating machine. This means that if you validate your travel pass at 1:30 pm you can use the transport until 1:30 pm the next day. It covers areas Mi1, Mi2, and Mi3 and costs € 7 (US$ 7.60).
72-hour travel card
The two-day travel card permits unlimited travel and is valid for 72 hours since it's first validated, costing € 12 (US$ 12.90).
Ticket for your luggage
You'll sometimes have to buy a separate ticket for your luggage, depending on its size, and note that if you have more than one suitcase, you might not be allowed to get on the metro, tram, or bus.
The suitcases which can be carried onboard are very similar to the dimensions of the ones allowed on an airplane. The small ones (50 centimeters) are allowed on for free and the larger ones (50 x 90 centimeters) must have their own Luggage ticket. Suitcases over 90 cm are not allowed on Milan’s public transport, so you might want to think about taking another means of transport because you could be fined if your luggage is too large.
Other tickets and travel cards
10 standard tickets
The price of 10 standard tickets is € 18 (US$ 19.40), which saves you a little money compared to if you were to purchase 10 separate single tickets. This ticket can only be used by one person.
Weekly 2x6 ticket
This travel card is not very useful for visitors. It allows you to travel twice a day for 6 days during the same week for € 8.40 (US$ 9.10).
This ticket gives you unlimited access from 8 pm until the end of the service. The price of the ticket costs € 3 (US$ 3.20).
Special tickets for the Fiera Milano (Rho Fiera)
A ticket to the Fiera Milano on Milan Metro’s line 1 costs € 2.55 (US$ 2.80) per journey. This ticket will allow you to change lines and take other means of transport for 105 minutes after first validating it.
As well as the already mentioned tickets, Milan’s public transport system also has weekly, monthly, and annual travel cards. These cards are not so useful for tourists unless you're planning on staying in Milan for over a week, as the card itself costs € 10 (US$ 10.80).
For more detailed information on the prices and types of tickets available on the Milan public transport network click here.