Flight cancelation, stranded in an different state?

They will not charge him to rebook the flight as everyone on the flight is in the same situation... He wasn't the only one stuck by fog. Weather is not something an airline can change at the push of a button, So it isn't their fault more a matter of safety that the plane is not flying, so they will not pay for him to have a hotel room, they may offer this to business/ first class passengers.. He may be able to claim through his travel insurance.