There are a couple of drop boxes, one or both may be embedded in walls.
- Terminal A: Pre-security. As you enter and approach the security checkpoint, the box is near or in the ticketing area on the left, next to the escalators. (map)
- Terminal B: Pre-security. Head directly to the ticketing area. Go to the far end of the ticketing area (relative to where you head for security). Don’t go outside into the smoking area; instead, turn left right before you head outside; you should see a drop there. (map)
Source (note: probably won’t help much – go get the maps)
Last updated 10 June 2017