One of the rarely reported computed tomography findings of COVID-19 is an air bubble sign. Minimum intensity projection (MinIP) images can increase the prominence of the air bubble appearance, which is one of the low-density findings observed in COVID-19 pneumonia. We present two cases with COVID-19 pneumonia, who were not optimally selected on thoracic tomography images, and air bubble appearance was detected in MinIP images. While air bubbles are not noticed in normal thin-section computed tomography images, they become more easily noticeable after the MinIP technique is applied. This observation needs to be confirmed by radiological studies.