Preheat your oven to 350°F (175°C). Grease a loaf pan.
In a large bowl, whisk together the flour, sugar, baking powder, and salt.
In another bowl, beat the eggs, then add milk, oil, lemon zest, and vanilla extract. Mix well.
Pour the wet ingredients into the dry ingredients and stir until just combined. Do not overmix.
Gently fold in the blueberries.
Pour the batter into the prepared loaf pan.
Bake for 60 minutes or until a toothpick inserted into the center comes out clean.
Let the bread cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.