Preheat your oven to 350°F (175°C). Grease a loaf pan and set aside.
In a large mixing bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
Add the chopped cranberries and orange zest to the dry ingredients and mix well.
In another bowl, combine the orange juice, vegetable oil, and beaten egg.
Pour the wet ingredients into the dry ingredients and stir until just combined. Do not overmix.
Pour the batter into the prepared loaf pan and spread it evenly.
Bake for 55 minutes, or until a toothpick inserted into the center comes out clean.
Let the loaf cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.