I quit wearing flight jackets because of the elastic waist- My wife gently pointed out that they just do not give a flattering profile, especially from behind, they seem to add 10-20 pounds to the midsections of most people who wear them because of way the jacket bulges out above the waist. After seeing some pictures, I had to agree.

Yes they are comfortable, no argument there. I have owned several.

You can get flight/bomber jackets with a straight waist, and they look MUCH better with a kilt (or anything else) than those elastic-waist ones. I plan on getting one of these: