If you're like me and don't have every airport code memorized, you can use firefox to lookup the airports.

I found this extension which is a dictionary lookup. Simply highlight the airport letters and firefox will open a new tab that lists the airport.

Instructions:
Download and install the extension.
Restart firefox, go to tools-extensions-defineword-options.
Then click on add and enter this in to Action and whatever you want into engine name (I named it airport lookup): http://www.loglink.com/airports.asp?query={search}&x=0&y=0&mode=smart
And there you go, you can look up airports without opening a new screen.

Screen shots:
Lookup airport


And look in the new tab and it says what airport it is and where it's located.


I find it to be a pretty handy tool, because I can't remember every airport, and it's very simple to find out and all I have to do is just highlight the airport code and it'll look it up for me, without having to open a new window.