Llanfair took a shock early lead when Sian Evans scored an own goal after only 2 minutes.
Llanfair almost doubled their lead moments later but the Aberystwyth keeper denied Tonicha Lloyd who had latched on to a through ball.
Llanfair continued to make it difficult for Aber, but the seasiders scored after 36 minutes to equalise through Gweliann Jones.
Llanfair came close to taking the lead again but Dottie Evans' effort went just wide.
The second half was a different story. The Welsh Premier side dominated the play and a barrage of goals ensued. An impressive 6 goals sealed the cup win for Aber.
An unfortunate end to what has been a challenging season with a small squad. The Ladies can be proud of their efforts as they enjoy a break, ready to again in Tier 2 next season.
Player of the Match: Nia Ellis