The Wave washed Staples away 23-4 in the FCIAC semifinals at Norwalk on Monday.
Darien had six goals from Nicole Humphrey, four apiece from Emma Stein and Emma Jaques, three from Christine Fiore.
Katie Ramsay had two goals, Ashley Humphrey, Sarah Jaques, Katie Elders and Charlotte Wittstock scored one apiece.
Darien rushed out to a 13-4 lead at the half over the No. 5 seed.
The top seed Wave plays sixth seed Ridgefield in the final 7pm at Norwalk on Wednesday.
Long-time defending champ Darien beat the Tigers 16-6 during the regular season. Ridgefield will be playing in its first league final.
Darien improves to 14-3 overall, 12-0 FCIAC.
Assists: Stein had three, Emma Jaques, Ramsay two each, Ashley Humphrey one.
Carly Schoudel made eight saves.