Born in Toronto, Canada to Rangers supporting, Glaswegian parents Aird eventually signed pro for his boyhood club five days after his 16th birthday.
Within a year he had moved from under-17 level to under-19 level and made his first-team debut on September 23 2012, in a 4-1 win over Montrose in Division Three. He scored his first Rangers goal in December of that year against Queens Park.
He netted seven goals in his second season with the first-team, plying his trade on the right wing. Since the arrival of Mark Warburton as manager he has been moulded into a right-back to cover James Tavernier.
He has been capped at under-17 and under-19 level for Scotland but in 2013 he was called up to the Canadian national side. He has since played for Canada and Scotland but made the decision to represent the country where he was born in 2014.