Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Fickle

Fickle as friends.
—Anonymous

Fickle as the lightning.
—Anonymous

Fickle as the weather.
—Anonymous

Fickle as love.
—Honoré de Balzac

Fickle as the flying air.
—Beaumont and Fletcher

Fickle … as the winds.
—Aphra Behn

Fickle as a feather.
—Alexander Brome

Fickle as the sea.
—William Cullen Bryant

Fickle and bright as a fairy throng.
—Eliza Cook

Fickle as the sky.
—James Grahame

Fickle as a female in hysterics.
—Oliver Wendell Holmes

Fickle as the flood.
—William King

Fickle as the breezes blow.
—Joseph B. Ladd

Fickle as a changeful dream.
—Walter Scott