Loughrey captained Ireland at Under-18 level before making his senior debut in April 2011 during a series of matches against Canada. Loughrey was a member of the Ireland team that won the 2011 Men's Hockey Champions Challenge II. He also represented Ireland at the 2013 Men's EuroHockey Nations Championship, scoring a goal in a 3–3 draw with the Czech Republic. In June 2017 Loughrey was a member of the Ireland team that won the Hamburg Masters, defeating Germany 4–2 in the final. He also represented Ireland at the 2018 Men's Hockey World Cup.