[phgn]

Take an empty, open water bottle through security and then fill it up at the free water fountains!

[angry_octet]

There is often no free water.

[weberer]

I've been all over the USA, continental Europe, and Japan, and there have always been water fountains. Granted, I've never been to one of the "don't drink the tap water" countries.

[CGMthrowaway]

Correct, I pay for it for you, every April 15th.

[smugma]

Which airports?