I lost my charging case at an airport. What are my options now?

The article you came here from provides you with what you need to do to attempt to locate your lost Powerbeats Pro. That included finding your Powerbeats serial number and contact Apple Support directly. Have you done that?

Replacement instructions for lost items are provided at the bottom of this support article "If your AirPods are lost: --> https://support.apple.com/HT207581 Neither the warranty nor AppleCare+ covers the cost of Airpods that are lost.

1. If you can't find your AirPod or Charging Case, or if something is damaged, get the serial number. Click on this link to discover how to find it --> https://support.apple.com/HT209371

2. Contact Apple Support for a replacement. Click here --> https://getsupport.apple.com/?caller=kbase&PGF=PGF32003&category_id=SC0298

(You may have to go to the support article in my first link for the special Airpod replacement service link if that one doesn't work.)

3. Learn how to set up your replacement.

Set up your replacement AirPods or charging case - "When you get your replacement, follow these steps to use your AirPods again." --> https://support.apple.com/HT207827