If I should flee as swiftly from try presence as the morning light doth, which in an instant scattereth itself from east to west; for the sea being the western border of Canaan, is oft put for the west in Scripture. And wings are poetically ascribed to the morning or morning light here, as they are elsewhere to the sun, as Zechariah 4:2, and to the winds, as Psalms 18:10, Psalms 104:3, and to other things of eminent swiftness.
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;