In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
In a large bowl, beat the softened butter, brown sugar, and granulated sugar together until light and fluffy, about 3-4 minutes.
Add the eggs one at a time, beating well after each addition, then mix in the vanilla extract.
Gradually add the flour mixture to the butter mixture, mixing just until combined, then fold in the chocolate chips.
Cover the dough and refrigerate for at least 2 hours or overnight.
Preheat oven to 375°F and line baking sheets with parchment paper.
Scoop 1/4 cup portions of dough and place them 3 inches apart on the prepared baking sheets.
Bake for 12-14 minutes until edges are golden but centers still look slightly underdone.
Remove from oven and immediately sprinkle with flaky sea salt, then let cool on the baking sheet for 5 minutes before transferring to a wire rack.