From: "Harris, Tyrone (HA Group)"
Subject: Gateway codes
Date: January 22, 2018 at 3:15:47 PM PST
ZZU is still a valid code for Polar. It is a code that was made up by the business to reflect US booking online without conflicting with any regional promotions. Canada is ZZC
DAIR is the Polar command to see the air codes built in Polar.