Maintain in-flight comfort and cleanliness by wearing breathable fabrics—materials like cotton, silk, or linen. Fabrics that don't allow air to circulate will hold in sweat, likely making you feel dirtier faster and probably necessitating a good spin in the washing machine upon landing.
Should I wear jeans on my flight?
If you decide to wear jeans on a flight and experience any discomfort, go for the old fashioned trick of unbuttoning the top button. Hidden beneath a sweater or a long shirt, no one can tell if your top button is undone and you'll feel just as comfortable as you would in sweatpants or leggings – trust me.