On 21 July 2021, he joined Scottish League One club Airdrieonians on loan until May 2022. McGill scored on his debut for Airdrieonians in a 2–0 win in the League Cup against their Lanarkshire derby rivals Motherwell. He went on to play 41 times and score 1 league cup goal and 4 league goals for Airdrieonians during the 2021–22 Scottish League One season.
