The availability of meals is based on the time slot the flight is in, and the duration of the flight. If your flight is not in a meal period, there are no meals, and snacks are usually available. If your flight is in a meal period, but the flight time is less than 1.5 hours, you will be given a simple meal such as a burger, or a snack if it is less than 1 hour.
Spring Airlines is a special case, and Spring Airlines does not provide meals or beverages, regardless of whether it is a meal time or not.
Spring Airlines is a special case.