Bratu played four games and scored one goal in a 4–0 victory against Luxembourg at the Euro 2004 qualifiers. He also played in one game at the 2006 World Cup qualifiers, one at the Euro 2008 qualifiers and two at the 2010 World Cup qualifiers.
Bratu played a total of four games, scoring once as Romania won 4–0 against Luxembourg in Euro 2004 qualifying. He also participated in one game at the 2006 World Cup qualifiers, one more at the Euro 2008 qualifiers, and two at the 2010 World Cup qualifiers.