There is a wide inexpensive network in all towns and cities. In Lisbon, the city of the seven hills, you can choose between bus, subway, elevators, electric trams or railway , within the city or to the suburbs. Do not miss the chance to go by tram or cable car - they are a great way to visit the city in a leisurely fashion.
Students can get around the city by bus or tram, both of which serve the entire city, for as little as 1,35 € per journey . Bus/tram tickets can be purchased, from the driver, or at any ticket vendor. During the rush hours the underground, or Metro, as it is called, is recommended as a faster mode of transport. A single ticket costs only 0,75 €. Subway tickets must be purchased at the subway stops. There are month passes for bus/tram/subway trips valid for 30 days for 35 €-40 € , as well as combined tourist cards that include museums and unlimited travel on the city's tramway, bus, elevator and subway transportation (1, 2 or 3 days).
The public bus and tram company CARRIS covers almost all of Lisbon. Generally, buses and trams run from 6 a.m. to 11 p.m. The subway is operated by a public company - Metropolitano de Lisboa - and runs from 6.30 am to 1 am . The latter is definitely the fastest way to travel around in Lisbon.

If you are in a real hurry, then take a  taxi,  which is also reasonably priced in Portugal. They are usually beige or less commonly black and green, with a sign on the roof. If this has a number (from 1 to 6) lit up this means the taxi is occupied. The green light on means the taxi is free. In the city taximeters are used; outside the city, the service is per kilometer, including the return trip to the pick-up point. Between 10 pm and 6 am there is an extra tariff of 20%. It's advisable to ask for a receipt. Baggage transported in the boot has a fixed rate.

If you're traveling outside Lisbon, then you have the choice of the train or coach service, which enables you to reach any point in the country in a fairly efficient and inexpensive way.