Upvote:2
Upvote:2
Singapore has two civilian Airports - Changi and Seletar airport.
Both serves international destinations only.
Upvote:8
You will have plenty of examples. Any country big (or populous) enough for more than one airport, but small enough so that domestic flights make no sense will be fine.
Just one example: Belgium.
There are five airports with regular passenger flights: Brussels, Charleroi, Ostend, Antwerp and Liège. Non of them offer domestic flights. Simply because it makes no sense at all. Just take the train and it will be faster and more convenient.