In reply to Raymondo:
You need a recent-ish iPhone or iPad to set-up a AirTag - ie to link it to your Apple account. Once thats done you can track it on an apple device, or using a reduced functionality Android app. They rely on the ubiquity of Apple mobile devices, though: the tag is sensed by any iThings (irrespective of owner) in the area, which send a location update to Apple. No Apple devices near the tag equals no updates, but an airport is likely to have a high density of iPhones so they ahould work.
Tile devices are for finding your car keys or whatever. Your phone is the only one that can locate the tracker, and you have to be in bluetooth range. Theres no network of receivers, so for tracking a suitcase it wont help you do much more than find it on the carousel.
The other option is the kind of trackers that are used in cars. These use gps to fix their location and the mobile phone network to send it to a service provider. Usually needs a subscription and might not work abroad due to roaming restrictions. And strictly speaking, devices that transmit signals need to be in flight mode while the aircraft is in the air, which makes them useless for this purpose.
Cheaper to get a couple of Danger Biohazard stickers for your case instead...
Post edited at 20:53