Portugal 
Greece
Portugal citizens enjoy freedom of movement in Greece — no visa is needed and there is no fixed limit on the length of stay.
EU Directive 2004/38/EC says that, without prejudice to national border-control rules on travel documents, Member States shall let Union citizens enter with a valid identity card or passport, and family members who are not nationals of a Member State with a valid passport.
“Without prejudice to the provisions on travel documents applicable to national border controls, Member States shall grant Union citizens leave to enter their territory with a valid identity card or passport and shall grant family members who are not nationals of a Member State leave to enter their territory with a valid passport.”
Source: Directive 2004/38/EC on the right of citizens of the Union and their family members to move and reside freely — EUR-Lex · checked 13 Oct 2026
Portugal citizens can enter Greece without a visa and live there under freedom of movement. You only need a valid Portugal passport at the border; immigration officers may still ask for a return or onward ticket, proof of accommodation and enough money for your stay.
Whatever your visa status, Greece applies the same entry conditions to every traveller:
Greece lets 93 passports in without a visa and requires an embassy visa from 105. Portugal citizens are treated the same way as Albania, Andorra, Austria, Belgium and Bosnia and Herzegovina. Overall the Portugal passport ranks #13 in the world with 124 visa-free destinations.
Planning a longer trip in Europe? With a Portugal passport you can also visit 44 countries in the region without a visa, including Andorra, Albania, Armenia, Austria, Bosnia and Herzegovina, Belgium, Bulgaria and Belarus.
In the other direction, Greece citizens can visit Portugal visa-free.
Entry requirements for GreeceUnder the Schengen Borders Code, a third-country national's travel document must be valid for at least three months after the intended date of departure from the territory of the Member States and must have been issued within the previous 10 years.
Schengen Borders Code — Regulation (EU) 2016/399 (consolidated 10 July 2024)✓ Checked 13 Oct 2026
Your passport needs at least 2 blank pages.
EU Visa Code — Regulation (EC) No 810/2009 (consolidated)✓ Checked 13 Oct 2026
The Visa Code requires applicants for a uniform visa for one or two entries to prove that they hold adequate and valid travel medical insurance, valid throughout the territory of the Member States for the entire intended stay, with minimum coverage of €30,000.
Visa Code (Regulation (EC) No 810/2009), consolidated text — EUR-Lex✓ Checked 13 Oct 2026
No official source we could read states that a return or onward ticket is required to enter. The Schengen Borders Code lists a return or round-trip ticket among the supporting documents as regards return.
Schengen Borders Code — Regulation (EU) 2016/399 (consolidated 10 July 2024)✓ Checked 13 Oct 2026
The European Commission's table of reference amounts gives Greece's as EUR 50, EUR 25 for minors, and EUR 300 for a stay of up to 5 days.
European Commission — Reference amounts required for the crossing of the external border, fixed by national authorities✓ Checked 13 Oct 2026
The EU's Travel to Europe site says that the first time you arrive at a border crossing point since the EES started, passport control officers will take a photo of your face and/or scan your fingerprints, and your passport will not be stamped; this can be quicker if you register some of your data in advance using a self-service system or a mobile application, where available. The UK government's travel advice says there is no cost for EES registration.
UK Foreign, Commonwealth & Development Office — Greece travel advice: entry requirements✓ Checked 13 Oct 2026
ETIAS is the new travel authorisation for visa-exempt travellers to enter 30 European countries, Greece among them. It is currently not in operation and no applications are being collected; the EU will announce the start date several months before launch.
European Union — ETIAS: frequently asked questions✓ Checked 13 Oct 2026
A third-country national who breaches the voluntary-departure deadline, or otherwise stays unlawfully for up to 30 days, must pay on departure a fine of four times the fee for a one-year residence permit. For an unlawful stay longer than 30 days, the fine is eight times that fee. Exempt from fines: minors; ethnic Greeks; spouses or parents of Greek nationals, ethnic Greeks or EU citizens; people in voluntary return procedures and programmes; and people who exceed their lawful stay because of force majeure, if they leave within 30 days after the cause ends.
Government Gazette ΦΕΚ Α' 81/2023 (copy on a gov.gr Syzefxis host) — Law 5038/2023 Migration Code, Article 20✓ Checked 13 Oct 2026
If you enter or leave the EU with €10,000 in cash (or its equivalent in other currencies), you must declare it to the customs authorities in the EU country you are entering or leaving, using the EU cash declaration form.
Your Europe (EU) — travelling with cash✓ Checked 13 Oct 2026
Data: TravelRequirements.info — Entry Requirements Dataset, AXG Sp. z o.o. (CC BY 4.0). Entry rules can change — confirm with official sources before travel.
Greece
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