The wings — If I should flee from east to west: for the sea being the western border of Canaan, is often put for the west in scripture. And wings are poetically ascribed to the morning here, as they are elsewhere to the sun, and to the winds.
Related Commentaries of Psalms 139:9
Psalms 139:9
9 If I take the wings of the morning, and dwell in the uttermost parts of the sea;