Airline codes

[PDTV]

What do the following mean on flight labels - DFW, WLG, YVR?

[woolley]

They are the codes for aiports. DFW Dallas Forth Worth, US WLG Wellington, NZ YVR Vancouver, Canada

[GordonS]

see http://www.airportcitycodes.com/aaa/CCDBFrame.html
or http://www.wajb.freeserve.co.uk/codes.htm (or search GOOGLE with airport codes