Instructions:To use: click the orange link when you land on the zoom web page and pop this code in the space provided.
I saw this when I was browsing the Zoom Airlines web page just now. I think it would make a great deal for any families planning on travelling - as kids usually have to pay the full adult fare - but zoom are offering this for free - up to 2 free kids under 18, if there are 2 paying adults. You do have to pay the taxes though, but even so this still might be handy.
Be sure to check in the HUKD vouchers to see if there are any other codes that might save you more than this. Here are the full T&Cs:
Valid on New bookings only, Limited availability. Taxes, fees & charges apply. Valid on all routes when booked before 31 July 2008. Credit and debit card charges are not included. Must be a round trip flight, Minimum of 2 Adults/full fare paying customers per booking, max of 2 children/discount receiving passengers per booking. Child is subject to the discount in the seating class selected by the accompanying adults. Child must be 17 years old or younger on the return departure flight date.