Once you add up accomodations, ski rentals, ski equipment and travelling to the ski hill, skiing holidays can be an expensive holiday. Here are some tips to help keep the costs down,

Look for deals
Check out the websites for nearby ski hills. They often have unadvertised specials you may be able to take advantage of for both ski passes as well as accomodations. Also contact the chamber of commerce where the ski hill is located, as they often offer discounts for local attractions and hotels.

Bring your own food
It can be expensive to feed your family, so if possible, choose a place with kitchen facilities to use. It may cost an extra $10, but you can save hundreds of dollars by not eating out. Bring your own food if possible, and if you need to shop for food, try and find the grocery store that locals use, rather than the nearby convenience store which will be much more expensive.

Bring your own entertainment
Bring board games, game boys, books and toys, otherwise your kids will ask for money for the arcade or any other activities that usually aren't free.

Borrow equipment if possible
Ask to borrow ski suits. Rent equipment rather than buying. Unless you plan on skiiing multiple trips per year, it is more cost expensive to borrow and rent than to buy.