In FS2004 I use FSNAVIGATOR unfortunately you can no longer get a license for it. But find a good atlas one that shows airports. I use one myself, Granted every now and then FS does not have the airport. But not that often. 8-)
There is no doubt that FS Navigator is the best thing since the invention of sliced Bread....

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(I purchased it when it was first released, together with its Key).
A zoom-able map of the Globe, with every Airfield shown, and all their details!
If it wasn't for FS Navigator, I don't think I would have been using all the versions MS Flight Simulator since FS '98...and the reason why most Multiplayer Flight Simmers that you regularly see on line, still use FS 2002/2004!...

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...FS Navigator was never developed for FSX...which is one of the many reasons why I don't use my copy of FSX...

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Paul...FS 2004....The Flight of the Navigator... 8-)...!
...My versions of FS Navigator are stored safely on CD's, together with their Keys...

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Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.