第 15 季 共 28 集
播出时间：2018年9月2日
第 1 集 Episode 1
播出时间：2018年9月2日
Simon Cowell, Louis Tomlinson, Robbie Williams and Ayda Williams return for an exciting fifteenth season of the UK's biggest singing competition, starting with arena auditions at SSE Wembley Arena; with Dermot O'Leary.
第 2 集 Episode 2
播出时间：2018年9月3日
The search for a new music superstar continues with the second of the Auditions shows
第 3 集 Episode 3
播出时间：2018年9月9日
The search for a new music superstar continues as The X Factor returns to ITV. Heralding the start of a new era for the nation’s most talked about entertainment show, is a brand-new panel with Robbie Williams, Ayda Williams and Louis Tomlinson joining music mogul Simon Cowell as judges.
第 4 集 Episode 4
播出时间：2018年9月10日
The search for a new music superstar continues as The X Factor returns to ITV. Heralding the start of a new era for the nation’s most talked about entertainment show, is a brand-new panel with Robbie Williams, Ayda Williams and Louis Tomlinson joining music mogul Simon Cowell as judges.
第 5 集 Episode 5
播出时间：2018年9月16日
The SSE Arena Wembley is the location as the audition rounds continue in the talent contest, hosted by Dermot O’Leary. Judges Robbie Williams, Ayda Williams, Louis Tomlinson and Simon Cowell decide who goes through to the Six Chair Challenge, before the competition really heats up later in the year with the live shows.
第 6 集 Episode 6
播出时间：2018年9月17日
The search for a new music superstar heats up as the auditions continue at the SSE Arena.
第 7 集 Episode 7
播出时间：2018年9月23日
The search for a new music superstar heats up as the auditions continue. Judges Robbie Williams, Ayda Williams, Louis Tomlinson and Simon Cowell audition more hopefuls at the SSE Arena in Wembley. They are joined by Dermot O’Leary, who will be on hand to guide viewers and contestants alike through their X Factor journey, providing them with a word of advice or a much-needed hug as the contestants perform in front of the judging panel.
第 8 集 Episode 8
播出时间：2018年9月24日
The search for a new music superstar heats up as the auditions continue. Joining music mogul Simon Cowell as judges are Robbie Williams, Ayda Williams and Louis Tomlinson.
第 9 集 Six Chair Challenge 1
播出时间：2018年9月30日
The Six Chair Challenge returns, promising amazing performances alongside agonising decisions for judges Robbie Williams, Ayda Williams, Louis Tomlinson and Simon Cowell, as they must each decide on the acts they will take through to their Judges' House. However, this year each judge has a golden button, which guarantees one act in their line-up a place in the final six, meaning that once they have a seat, they cannot be swapped out. Presented by Dermot O'Leary.
第 10 集 Six Chair Challenge 2
播出时间：2018年10月1日
Dermot O'Leary hosts the second of the three Six Chair Challenge episodes, in which the acts perform individually before the judges choose who will be selected for the next stage. However, even if a contender is selected to go through to the next stage, the judges are free to change their minds and ditch them if a more promising alternative comes along later in the show.
第 11 集 Six Chair Challenge 3
播出时间：2018年10月7日
The final Six Chair Challenge episodes, in which the acts perform individually before the judges choose who will be selected for the next stage.
第 12 集 Judges' Houses 1
播出时间：2018年10月8日
The remaining 24 acts jet off to the Judges' Houses stage. Offering a glimpse into the jetset lifestyle that the winner could have, the contestants travel to glamorous destinations across the world, and with just one more chance to impress their mentor, each act will be hoping to convince them that they have the star quality required to reach the live shows.
第 13 集 Judges' Houses 2
播出时间：2018年10月14日
The competition reaches its next stage as the remaining acts jet off to the Judges' Houses, where they have a final chance to make a good impression.
第 14 集 Judges Houses 3
播出时间：2018年10月15日
第 15 集 Live Show 1
播出时间：2018年10月21日
第 16 集 Results Show 1
播出时间：2018年10月22日
第 17 集 Live Show 2
播出时间：2018年10月28日
Each of the acts will need to show their adaptability as well as singing talent in order to survive another week in the competition.
第 18 集 Results Show 2
播出时间：2018年10月29日
Each of the acts will need to show its adaptability as well as singing talent in order to survive another week in the competition; Dermot O'Leary hosts.
第 19 集 Live Show 3
播出时间：2018年11月4日
Each of the acts will need to show its adaptability as well as singing talent in order to survive another week in the competition; Dermot O'Leary hosts.
第 20 集 Live Show 3 Results
播出时间：2018年11月5日
Dermot O'Leary hosts as the nerve-racking live shows continue; each of the acts will need to show their adaptability as well as singing talent in order to survive another week in the competition.
第 21 集 Live Show 4
播出时间：2018年11月11日
Dermot O'Leary hosts as the nerve-racking live shows continue.
第 22 集 Results Show 4
播出时间：2018年11月12日
第 23 集 Live show 5
播出时间：2018年11月18日
Each of the acts will need to show its adaptability as well as singing talent in order to survive another week in the competition; Dermot O'Leary hosts.
第 24 集 Live results 5
播出时间：2018年11月19日
Each of the acts will need to show its adaptability as well as singing talent in order to survive another week in the competition; Dermot O'Leary hosts.
第 25 集 Live Show 6
播出时间：2018年11月25日
Each of the acts will need to show its adaptability as well as singing talent in order to survive another week in the competition; Dermot O'Leary hosts.
第 26 集 Results Show 6
播出时间：2018年11月26日
Each of the acts will need to show its adaptability as well as singing talent in order to survive another week in the competition; Dermot O'Leary hosts.
第 27 集 Final Saturday
播出时间：2018年12月2日
The final acts perform in the hope of impressing the judges and the audience at home, while a lineup of guest performers takes to the stage.
第 28 集 Final Sunday
播出时间：2018年12月3日
Dermot O'Leary hosts the tension-packed season finale as the X Factor 2018 winner is crowned.
