US raises legal age to buy cigarettes, vapes to 21 A majority of surveyed parents didn't know a person must be 21 to purchase tobacco products in the United States. The federal age limit for buying cigarettes, vapes, nicotine pouches and other US raises legal age to buy cigarettes, vapes to 21 East Idaho News How Old Do You Have to Be to Buy a Vape in 2023? How Old Do You Have to Be to Vape? Smart vapes could be sold which prevent underage teens from using them.