I am sorry to hear this sad news. When I first had tinnitus I visited ten or more different Doctors and ENTs with no success. I understand your commitment to find answers however please keep in mind your brain is in fright not flight. You will have multiple diagnosis and stress traveling. That would confuse me and the stress may increase the tinnitus and especially if your not wearing noise cancelling device on the plane. May I suggest you find one experienced tinnitus audiologist. They may suggest a brain scan to rule out any tumor activity which I have found rare but necessary. Based on your audiogram it should be decided if you require hearing aids and if so please make sure they have both sound and amplification. I used white noise with my hearing aids and you could also use an ipod or your phone by finding noise that is simply delightful as the brain will pick up the new noise and disconnect from the noise your hearing. This takes time and a good attitude. You might also try cognitive behavioral therapy and a phycologist can help you learn about how to control the reaction to the noise. In regard to ENTs they cannot help you unless you have somatic tinnitus or tinnitus outside the brain. That would include having ear wax, estucian tube infections or misaligned jaws. Tinnitus from damaged hair cells in the cochlear nerves are in the brain so basically you hear with your brain. I barely touched on such a vast and complicated disorder as helping you is not just a simple question and answer on a support site. You can look me up under peer support at week.ata.org in Florida under my name Sal Gentile or message me I will be glad to have an on line conversation with you.