In the first leg, played at Farrar Road, Bangor won 2–0; three weeks later, in front of a crowd of 80,000 in Naples, the result was 3–1 in Napoli's favour.

At the end of 1977–78 when Southport was relegated from the English Football League Fourth Division, Bangor City, Boston United and Wigan Athletic were considered for promotion in its place.

In 1979–80 Bangor City was invited to compete in the Alliance Premier League, which would become the English game's de facto fifth division.

On 12 May 1984 they became the first Welsh club to play at Wembley since Cardiff in 1927, when reaching the FA Trophy final against Northwich Victoria.

The captain of the club during that season was midfielder Mark Palios, who later became chief executive of the English Football Association during 2004–05.

In 1995 the club retained the League of Wales championship and this time drew the Polish runners-up Widzew Łódź in the preliminary round of the UEFA Cup.

The club won back the Welsh Cup in 2008 defeating Llanelli 4–2 after extra time at Latham Park, Newtown.

Bangor ended the 2008–09 season with yet more silverware as they retained the Welsh Cup by defeating Aberystwyth Town 2–0 in a match held at Parc y Scarlets, Llanelli.

The 2008–09 Welsh Cup success meant that Bangor participated in the inaugural Europa League competition at the start of the 2009–10 season.

The 2010–11 season marked a significant change in the set-up of the Welsh Premiership, with Bangor one of the 12 sides (down from 18) contesting the championship.

Bangor finished second in 2011–12's Welsh Premiership, keeping in contention for the title until the final game of the season, a decider against TNS who won the league.

In July 2012 Bangor City forward Les Davies made the 32-man longlist for UEFA's best player in Europe award.

[9][10][11][12] 2012–13 began with a 0–0 home draw against Moldovan side FC Zimbru Chisnau in the first leg of the UEFA Europa League, first qualifying round.

In June 2016 it was announced that a Cheshire-based consortium[13] was to take over, promising large investment in the team, plus ground improvements.

[17] However, with Welsh Premiership licensing rules stating that every club's head coach/manager must have, or be in the process of attaining, the UEFA Pro Coaching Licence[18] and in the absence of such a qualification, Dawes was gone by March 2017.

The Club qualified via the playoffs for the Europa League under Fletcher's guidance with a 1–0 win at Nantporth against Cardiff Met.

[22] The Club qualified automatically for the Europa League for the second successive season, finishing second under Nicholson's guidance[citation needed] as well as being beaten in the semi-final of the Welsh Cup.

[26] On 26 April 2018 the FAW Club Licensing Appeals Body decided to revoke the club's Tier 1 and UEFA license due to not meeting financial criteria [27] meaning that they would automatically drop down to the second level of Welsh football the next season, despite a second-placed finish in the Welsh Premier League, and would not be able to compete for a place in the following season's Europa League.

The BBC reported that "Those concerns relate to the transfer of 25,800 shares to the company Vaughan Sports Management Ltd, a move which gave the firm significant control of the club".

[43] On 16 August 2019, Bangor City won their appeal against the FAW in Birmingham and were reinstated the 21 points that were originally deducted from them in the 2018–19 Cymru Alliance season, a campaign they finished in fourth spot.

[50] In April Serafino made a £5,000 donation to local hospital Ysbyty Gwynedd to help it fight the outbreak of coronavirus.

A temporary suspension of football in Wales over the festive season (due to COVID-19 Welsh government restrictions) saw the club not deducted any more points as all domestic games were postponed.

[71] On 18 February the club announced in an official statement they had informed the FAW that they had withdrawn from the Cymru North for the 2021–22 season.

[72] Later that day, the FAW confirmed that the club's withdrawal had been accepted and its playing record in the league for the season had been expunged.

[74][75] When the club was first founded, Bangor played their home games on a small field called Maes-y-Dref in the Hirael area of the city.

The Farrar Road ground served as home to the club for many years afterwards and has hosted two Welsh Senior Cup Finals, in 1928 and 1953.

Bangor played their last match at Farrar Road, a 5–3 win over Prestatyn Town, on 27 December 2011 before moving to Nantporth.

The club moved to a new stadium, away from the city centre, at the University's former Nantporth playing field near the Menai Strait, completed in January 2012.

The first game took place on 24 January, where Bangor hosted local neighbours Caernarfon Wanderers, the score ended 6–1 to the Citizens.

In April 2019 the Supporters Association voted overwhelmingly to create a breakaway club in order to protect football in the city from the Vaughan's.