Here you'll find out if you need one or both of these documents to
enter Portugal.
If you're coming from the European
Union (EU) then you probably already know that you don't
need a passport or visa since we have our frontiers openned to travel
inside the EU.
You only need your national
identification card to enter Portugal.
If you are under
the age
of 18, you will also need a written travel authorization
from your parents.
The same aplies to the following countries:
Andorra
Iceland
Liechtenstein
Malta
Norway
Switzerland
Great news, right?
But, if you're not coming from one of these countries, keep reading.
If you are going to stay in our country for less than 91 days
and you come from one of these countries:
Argentina
Australia
Bolivia
Brasil
Brunei
Bulgaria
Canada
Chile
South
Corea
Costa
Rica
Croatia
El
Salvador
United
States of America
Guatemala
Honduras
Israel
Japan
Malaysia
Mexico
Monaco
Nicaragua
New
Zealand
Panama
Paraguay
Romania
San
Marino
Singapore
Uruguay
Vatican
Venezuela
Hong
Kong
Macau
Then you only need your passport. Remember that the passport must
remain valid for a period of three
months after the departure date (from Portugal).
If
you're coming from any
other country then you will need your passport and a visa
to enter Portugal.
You can get the Visa in the Portuguese
Embassy or Consulate present in your country.
Accordingly
with the principles of the Schengen
Convention the passengers flying from or to another
Schengen State don't need a new visa.
If
you're coming from 
