At the end of the regular season, the top four teams met in the play-off semi-finals. First placed Leeds beat fourth placed Castleford, while second placed Wigan beat St Helens who finished third. The winners met in the Grand Final at the Manchester Regional Arena on 13 October.
The fixtures are organised into 14 rounds, with each team only having 12 fixtures this means that every team will have a bye in two rounds of the competition.
↑Match abandoned after 62 minutes due to injury to York's Chloe James. There had already been a 50 minute delay due to injury to St Helens' Pippa Birchill.[6][7] As over 60 minutes has been played the result stands.[6]
The Grand Final was played at the Manchester Regional Arena on 13 October 2018. Neither team existed when the inaugural Grand Final was played in 2017. Leeds were seeking to complete the treble (League Leaders Shield, Challenge Cup and Grand Final winners) in their first season while Wigan were seeking their first ever trophy.
Leeds scored first, when Rhiannion Marshall scored a try from close range, Courtney Hill added the conversion. Wigan hit back a few minutes later when (Rachel Thompson scored their first try. The first half remained 6–4 to Leeds until shortly before half-time, when Thompson scored her, and Wigan's second try to make the half-time score 8–6 to Wigan.
In the second half Georgia Wilson extended Wigan's lead to 12–6 and Thompson completed her hat trick to put Wigan further ahead 16–6. Leeds struck back with a Caitlin Beevers solo effort, covering 80 metres from a 20-metre restart, Courtney Hill added the extra two points. With the score at 12–16, Leeds equalised as Suze Hill scored with only three minutes left to play. The conversion attempt was missed, and in stoppage time, Wigan were awarded a penalty which Charlotte Foley kicked to give Wigan victory by 18 points to 16.[24]