Coby CV-E195 Noise Canceling Headphones
At $20, these are going to some of the cheapest noise canceling ear buds you can buy. If you were considering picking up a cheap pair, don't. They do practically nothing for canceling airplane engine noise. In fact, I would argue they make engine noise worse by adding to it a high-pitched hum -- even when there is audio input. They are cheaply made and the control box is unnecessarily large.