the "Blues" to a second-place finish in 2015–16, eight points behind Crusaders. On 7 February 2017, he won his first managerial honour as Linfield beat Crusaders 3–1 in the County Antrim Shield. On 25 February, he was given a six-game general ban after being dismissed from the touchline for the third time of the season. Despite this setback, the "Blues" went on to win the league title in 2016–17, and ended the campaign with a treble after beating Coleraine 3–0 in the final of the Irish Cup. He went on to add the Charity Shield to Linfield's honours with a 3–1 victory over Coleraine at The Oval. They went on to lose to Celtic in the second round of qualification for the UEFA Champions League in the 2017–18 season, and had a disappointing campaign domestically as they finished fourth in the league and exited both cup competitions at the quarter-finals. On 16 February 2018, Healy won his fifth domestic honour with Linfield as they won the Northern Irish League Cup final with a 1–0 over Ballymena United. Healy won his second league title as a manager during the 2018–19 campaign, with Linfield finishing seven points ahead of second-placed Ballymena United and Healy also being named as Manager of the Year. He also added the League Cup to his collection, as Linfield defeated Ballymena United 1–0 in the final. Linfield also reached the 2019 County Antrim Shield final, losing out 4–3 to Crusaders. He stated that he was looking to strengthen the first-team in the summer, saying that "we're not just going to be bringing in players for the sake of making up the numbers, we're going to be bringing in players who will be challenging for a starting berth". The 2019–20 season was ended early due to the COVID-19 pandemic in Northern Ireland and Linfield were crowned champions after finishing ahead of Coleraine on points per game. Healy said that it was unfortunate that they were unable to secure the title on the pitch but was pleased that they were "rightly crowned champions". Linfield retained the league title in the 2020–21 campaign and on 21 May, Healy won his second Irish Cup when his Linfield side defeated Larne 2–1. He was linked with a move to Irish club Dundalk and stated that "I certainly don't want outstay my welcome [at Linfield]". Healy was also named as the NI Football Awards