Daly's form for Munster during the 2019–20 season was rewarded with his first senior call-up in October 2020 to the Ireland squad for the two delayed remaining fixtures of the 2020 Six Nations Championship. He made his debut for Ireland in their final Autumn Nations Cup pool fixture against Georgia on 29 November 2020, coming on as a replacement for provincial teammate Keith Earls in Ireland's 23–10 win.