Kayal signed a one-year contract extension on 28 September 2018 that keeps him at the Sussex club until June 2020. He scored his first Premier League goal in a 1–0 away win against Newcastle United on 20 October. He played in all five games for Brighton to the run up to the 2019 FA Cup Semi Final, which included the narrow quarter final penalty shootout win away at Millwall. However, he did not feature in the 1–0 semi final defeat against Manchester City at Wembley. Kayal appeared in the 1–1 home draw against Newcastle claiming a vital point for "The Seagulls" in their fight for survival. Kayal made 18 league appearances as Brighton retained their Premier League status for a third consecutive season.