I've noticed a number of comments in different postings (generally not good) about the way people dress when flying. I don't travel for business anymore so the only time I fly is on vacation/holiday. I usually wear khakis, woven sport shirt (because it has a pocket), loafers and a sweater or coat because planes can be so cold. I don't own a jogging or running suit and wouldn't be seen in one outside the gym anyway. In everyones sartorial opinion, is this OK or does anyone have recommendations.