If your ears remain clogged for more than a few days, or if you experience sharp pain, fluid drainage, or significant hearing loss, it is important to consult a doctor. This could indicate a middle ear infection or a more serious case of barotrauma that requires professional treatment. In most instances, however, a combination of swallowing, gentle pressure maneuvers, and time will return your hearing to normal.
To avoid ear clogging during a flight, try the following: how to unclog your ears after a flight