On JetBlue aircraft, the location of the headphone jack depends on the age and model of the plane, but it is most commonly found in one of three places. On many older A320 and A321 aircraft, the 3.5mm headphone jack is located in the armrest of your seat. On newer "Airspace" cabins and retrofitted planes with the latest seatback screens, the jack is usually located directly on the lower corner of the touchscreen monitor or tucked just below it near the USB charging port. For passengers with modern Bluetooth headphones, JetBlue's newest entertainment systems (especially on the A321LR and A321neo) now offer Bluetooth pairing directly through the screen, allowing you to connect wirelessly without a dongle. If your seat does not have Bluetooth and you forgot your wired headphones, JetBlue flight attendants usually sell basic earbuds for a small fee (around $5) during the initial stages of the flight. Always remember that the jack is a standard single-prong 3.5mm port, so you won't need a dual-prong adapter.