Thank you for joining the Community and thank you for your interesting question.
To connect to the airplane's in-flight entertainment system, you need a wired connection.
What headphones do you have?
You may need the QuietComfort® headphones airline adapter.
This adapter lets you connect your QuietComfort headphones to inflight entertainment systems equipped with dual or single output 3.5 mm jacks. Simply plug the headphones cord into the adapter and insert it into the airline jacks. Then enjoy powerful, balanced sound for music or movies.
Please click the link or image above for more information.