Pack weight measures the empty backpack without any gear, airbag cartridge, or back protector inserted. For resort skiing, a pack in the 900–1200g range is plenty. But if you're ski touring, every gram counts on long uphill skin tracks—ultralight touring packs run 500–900g, while standard backcountry packs sit around 900–1400g.
If you want an avalanche airbag system, expect a significant weight jump: those packs typically weigh 1500–2500g. Don't compare an airbag pack's weight to a non-airbag model and assume it's just heavy—the system adds substantial weight by design.
The key is balancing weight against durability and features. The lightest pack might use thinner materials that won't hold up to rugged use or repeated contact with ski edges. Choose based on your typical terrain and how hard you are on your gear.