>>18991441 for international/commercial
1 for fedex/dhl/ups
1 for private jets and cessnas
sounds about right. My city of 1 million people in the USA has 4 airports. (1 commercial international airport, 1 old airport they still use for cargo and gulfstreams, 2 municipal airports for cessnas and whatnot- recently expanded to accomodate jets.
Also your country is preparing for war. It's prudent to build as many airfields as possible as the key to your defense of an eastern invasion is NATO air superiority.