Around 450,000 tickets will be available until June 16 for purchase via the official website - Euro2004.com.
Prices start at EUR35 for group matches and rise to EUR270 for the final itself.
UEFA confirmed 38 percent of all tickets will be sold directly to the general public and a further 39 percent will be sold to fans through their national associations.
In addition, 13 percent will be reserved for the tournament’s sponsors and partners, whilst 5 percent will be allocated to the media and 5 percent for corporate hospitality.
Said Dr Gilberto MadaC-l, president of the Portuguese Football Association and chairman of the board of Euro 2004: “One of the main objectives is to have the stadiums full.
"The launch of the ticket sales today, is a significant moment in order to reach this objective."
