Okay Mike, it's important to remember that an internet forum should never be relied up for diagnostic value. I will, however, tell you that several things are possible here and all of them should be determined under evaluation by your primary care physician.  

One possibility is Superior Canal Dehiscence syndrome. Patients with SCD syndrome often present with dizziness that is worsened with pressure changes in the middle ear (due to lifting or straining), or with loud noises. Unlike benign positional vertigo, which presents with rotatory vertigo in the horizontal plane, patients with SCD will describe a sensation of oscillopsia, or eyes "jumping up and down," which is senses as vertigo in the "vertical plane." The horizon will move up and down during the episode. However, there is a great deal of variability with how SCD patients present to their otolaryngologist or otologist.

Post Traumatic Vertigo is a second possibility and presents with similar symptoms following an insult of either viral, bacterial, neurological or mechanical origin, the latter two causes being the most common.

Remember that these are conditions that often have an insidious rather than acute onset and without knowing your history, it's difficult to assess. Regardless, your condition requires direct evaluation by your primary care doctor.  

Best regards and Good Health

I don't see an issue with commercial flight but again, advice about flying is more directly associated with an evaluation by your local physician and the outcome of any diagnostic tests.

The fact that your problem appears to be self-resolving in your estimation is somewhat indicative that it is transient in nature, but does not indicate resolution is imperative. It's important to have the symptoms formally evalauted.

Best regards and Good Health