How about adding World’s biggest airport, İstanbul İnternational Airport [IST]. It was opened 1 year ago and the transfer point of Turkish Airlines(The airline flying to the most countries.). The Airport has 6 runways (only 2 of 6 in use. Others in constraction). It has well over 5.2m passenger a month. Aiport can handle L planes and has a cargo compartmant that mostly used by Turkish Cargo. Can’t handle A380 and Boing 747-8 because they are abonded in Turkihs Republic but The airport handled 1 A380 because of an emergency landing of Thai Airlines. I know that seeing this Airport in game while playing right now because it is soo big but it can be added as an destination.
A380 in İstanbul Airport.
The beatiful control Tower of airport. Looks like a Tulip
Thanks for reading. 
If there is a mistake gramaticly I am sory for that. My english isn’t very good.