OAG - The Official Airline Guide  
   Independent provider of travel information products and services, offering business travelers, corporations and the global travel industry information to make effective travel planning decisions.
   http://www.oag.com/

FlightArrivals.com  
   Comprehensive, independent arrival, departure, delay and cancellation information for all commercial flights across the US and Canada.
   http://www.flightarrivals.com

Airwise  
   News and information source for airlines, airports and air travel. Also includes discussion boards.
   http://www.airwise.com/

Instone Air Services  
   A specialist in the air transport of animals worldwide.
   http://www.instoneusa.com

ITA Software  
   Plan air travel with an advanced shopping tool displaying a comprehensive summary of all your flight travel options. Cannot purchase tickets online at this time. North America flights only.
   http://www.itasoftware.com/

The Budget Traveller's Guide to Sleeping in Airports  
   Reviews including the best and worst around the world. Tips for sleeping comfortably and safely while grounded, articles, news and other strange places to sleep.
   http://www.sleepinginairports.net/

HowStuffWorks: How Airport Security Works  
   Illustrated tour of the current technology used in airport security.
   http://www.howstuffworks.com/airport-security.htm

IAPA - International Airline Passengers Association  
   Offers hotel discounts, car rental savings, flight reservations, travel insurance, airport VIP lounge access, airline safety representation and luggage protection.
   http://www.iapa.com

AirlinesAndAirportLinks.com  
   Database of links to airlines and airports around the world.
   http://www.airlineandairportlinks.com/

Bel Air Travel  
   Offers Canadian low-fare flight reservations.
   http://www.belairtravel.ca