Dual 3.5mm Male to 3.5mm Female AUX Audio Jack Adapter
Amazon.com: Gold Plated Airplane Flight Headphone Adapters (Pack of 2) | Allows you to use your Earphones with all In-Flight Media Systems | This Airline Plane Headset Converter Enables Great Sound on
RHA's Wireless Flight Adapter makes any headphone jack wireless - The Verge
AirFly Bluetooth Headphone Adapter—This TikTok-Famous Gadget Can Connect Your AirPods to the Airplane TV
Wireless Flight Adapter | Bluetooth 5 Audio Transmitter for Headphones