Tip #2: Reduce waste and save some money by bringing a reusable water bottle. So you can't bring H20 or any other liquids more than 3.4 oz. (well there are some exceptions) through security, but you CAN bring an empty bottle. Just fill it up on your way to boarding your flight after screening.
Can I take a Yeti Cup on an airplane?
Can you take a Yeti on an airplane? Yes. The drinkware is treated the same as any bottle or thermos by TSA. You just can't fill it until after you've passed security.
Can I bring an empty Yeti water bottle through TSA?
Yes, you can bring an empty water bottle on a plane. According to TSA, you can bring an empty water bottle on a plane by packing it in your checked bag or by stowing it in your carry-on.