They will contest the final of the Ladies Over 35s Masters Shield against Barnes on April 30 after beating Hertford 3-0 in their semi-final yesterday (March 12).
Wisbech were the better side from the off and took a deserved lead on 10 minutes through Laura Overland.
Overland struck again from a short corner soon afterwards and, although the second-half was more even, Tania White converted a penalty flick to complete the scoring.
Goalkeeper Lorraine Wallis played well to ensure a third clean sheet in the competition.
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White and Erika Harvey were named joing players of the match.