Florie earned eight caps, scoring two goals, with the U.S. national team from 1925 to 1934. His first cap came in a 1-0 loss to Canada on June 27, 1925. His second came a year later, this time a 6-2 win over Canada in which Florie scored. Florie was not called into the national team for the 1928 Olympics, but was called up for the 1930 FIFA World Cup. He was named as the team captain as the U.S. went to the semifinals before falling to Argentina. His last national team game came in the first round loss to Italy in the 1934 FIFA World Cup.