Yes, you can absolutely bring bras on a plane in 2026, both in your carry-on luggage and your checked bags. There are no restrictions on the number of bras or the style of undergarments you can pack. However, there is a minor "pro" tip regarding underwire bras and airport security. In 2026, as airports move toward more sensitive body scanners and CT luggage X-rays, the metal wire in some bras can occasionally trigger a "yellow" alert on a body scanner, which may result in a quick pat-down by a female TSA or security officer. To avoid this minor inconvenience, many frequent travelers opt to wear wireless bras or sports bras on the day of travel. If you are packing expensive or delicate bras in your carry-on, you might want to place them in a mesh laundry bag so they are easily identifiable if your bag is chosen for a manual search. Overall, bras are treated like any other piece of clothing, and unless they are unusually heavily embellished with large metal studs, they will pass through security without any significant issue.