The guitar's construction will significantly affect how much the instrument weighs. The principal wood used to create the body - as well as the building method - will determine how heavy it is. While guitarists will argue until the cows come home about whether wood type has any auditory benefit, it can't be denied that it has a consequential impact on the guitar's mass.
The Les Paul's sandwich of flame maple and dense solid mahogany makes for a perfect pairing if you are looking for a rich and thunderous sound. Still, it will weigh considerably more than a basswood body singlecut from Gretsch or a fully hollow maple ES-330.
So, if you are looking for clues on how light a guitar is - and you aren't able to get a hold of it - an excellent place to start is the materials used to create it.