Air

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

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

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

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/

FlightArrivals.com
Independent arrival, departure, delay and cancellation information for all commercial flights across the U.S. and Canada.
http://www.flightarrivals.com

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

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 summary of all flight travel options. Cannot purchase tickets online at this time. North America flights only.
http://www.itasoftware.com/

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/