Even after landing you can continue the pressure equalizing techniques, and you may find the decongestants and nose sprays to be helpful. (However, avoid making a habit of nose sprays. After a few days they may cause more congestion than they relieve.) If your ears fail to open, or if pain persists, you will need to seek the help of a physician who has experience in the care of ear disorders. He may need to release the pressure or fluid with a small incision in the ear drum.