That is very true. I didn't mean to imply that any dirt-track could receive that designation. It is however a 'checkbox' for those airports that do infact mee

That is very true. I didn't mean to imply that any dirt-track could receive that designation. It is however a 'checkbox' for those airports that do infact meet those requirements. {thus my "checkbox" statement} Before I ever heard of such designation, I had a very glamorous opinion of what was required to be an 'international airport'. Things like regular flights from all over the world landing and taking off. Huge passenger gateways & terminals, and thousands/millions of people being served every day. The airport in my town has 3 runways. is serviced by 2 carriers. has under 20 (closer to 10) arrivals on average per day. Is only open part-time. (weekends + holidays) It has 'international airport' status. A tremendously HUGE Russian Cargo plane landed here to deliver a factory for a major automaker. My point in the OP was that even 'minor' airports could be affected by that international border.