It will be 50 sq. km by the time the extension is finished [1].
[1] https://twitter.com/TaylorOgan/status/1859149340897628545
[1] https://twitter.com/TaylorOgan/status/1859149340897628545
https://en.wikipedia.org/wiki/Dallas_Fort_Worth_Internationa....
While that is a ton of activity (and empty space, if you have ever seen those airports), the Big Apple might not be the best reference for scale.