If you are travelling in the next six months, these are a good companion for your international flights.
You could pick them up on the way out from Departure. They are open from 04:30 in the morning.
$289 in either color (Black or Smoke White). Link is for the black ones.
Bose Noise Canceling Headphones 700, if you prefer them, are also at a good price for $349 (just look in the Bose section).
Both the QC45 and the 700 are Limited Offers, meaning there is no guaranteed end time or date.