Airport Codes Manual II - A hardcopy manual intended for use with Data Base Products software. Helpful to anyone who needs to find a three letter code for an airport or find the airport, city, state or province, country, and World Area Code from the airport code. Over 4,000 airports are referenced. Free to our customers. Contact us at info@airlinedata.com for more details.

Airport Search Engine - from totavia.com

Directory of Airports on the Internet -a service of Air Travel Network

Great Circle Flight Path Display - enter two airport codes, and the flight path between them is displayed on a generated map. This program also returns the latitude and longitude of each airport in degrees, minutes, and seconds.

USabc - airports list