Portuguese superstar Cristiano Ronaldo left the pitch in the 25th minute after suffering a knee injury and did not return.
The match remained scoreless but French forward Andre-Pierre Gignac provided some late game drama when he hit the post just moments before the teams headed to extra time.
The additional minutes provided little highlights until Portuguese defender Raphael Guerreiro's free kick in 108th minute hit the crossbar. One minute later, however, Eder scored for Portugal to break the deadlock and secured the victory.
Runners-up in the Euro 2004 final in their home turf, Portugal finally managed to win its first major international trophy in France, making the hosts experience the same feeling twelve years later.
A hobbling Cristiano Ronaldo hoisted the trophy at the Stade de France in Saint-Denis.