Airbag cushion assemblies comprising tether release functionality. Some embodiments may comprise an airbag housing comprising an airbag housing opening configured to receive a squib. An airbag cushion may be coupled with the airbag housing and a tether comprising a tether opening may be coupled with at least a portion of the airbag cushion. A squib may be positioned to extend through the tether opening and positioned within the airbag housing opening. The squib may be configured to, upon actuation, separate to release the tether.