Prague Airport is divided into Terminal 1 (where flights to countries outside the Schengen area are checked-in) and Terminal 2 (where flights to countries in the Schengen area are checked-in). Therefore, the necessary travel documents are required based on your final destination. Before each travel, we recommend that you carefully read the conditions for entry to the territory of the given state to find out if you require a visa or other permits. You might also check the required passport validity requirement because certain countries require you to have a minimum of six months validity on your passport. You might be denied boarding if you fail to show the necessary visa during check-in.
Flights to the Schengen Area
The Schengen area includes all member states of the European Union (and their overseas territories), excluding Bulgaria, Romania, Ireland, Cyprus and Croatia. In addition, the Schengen area also includes Iceland and Norway, which are not EU members. The Schengen regime guarantees the free movement of persons. Therefore it is necessary to have an ID card with you, and no other visas or permits are required.
The Schengen area does not automatically extend to all the overseas territories of member states. The Portuguese Azores, Spanish Canary Islands and Ceuta and Melilla exclaves in Africa are included. On the other hand, not all overseas territories of France, Norwegian Svalbard, the Danish autonomous territory of Greenland and the Faroe Islands (they are not even part of the EU), or the overseas Dutch autonomous regions of Aruba, Curacao, Sint Maarten, Bonaire, Saba and Sint Eustatius are included.
For more detailed information about the countries which are part of the Schengen area, check this link https://en.wikipedia.org/wiki/Schengen_Area.
Flights Outside the Schengen Area
For flights outside the Schengen area (which are checked in from Terminal 1), you must also have a valid passport with you (except for states that allow entry to their territory with an ID card only). After check-in and boarding pass control by the validator, passport control follows, with the security check being performed directly at the gate.
When travelling to certain countries, you must also have a visa that varies by the length and purpose of stay in the given state. Always check the detailed conditions for entry to the territory of the given state before your departure at the local embassy or with the Ministry of Foreign Affairs of the Czech Republic.