Edit: Apple could fix this in the Find My back end infrastructure. Put a block on all Airports.
Ok...I'll have to send that in as a feature request....done.
No!!! Theft at airports happen every minute, often by TSA screeners, baggage handlers, porters etc.
The property is almost never recovered and arrests are basically non-existent.
Airtags are not a risk to Nat'l security or air travel safety. If you're that paranoid, don't fly.