Planes
New baggage restrictions are popping up. United, Delta, and Northwest have lowered their maximum weight from 70 lbs. to 50 lbs. Anyone over the limit will be hit with additional charges. See the selected baggage restrictions table.
Orbitz is the portal for a bunch of the major airlines. I've heard the rates are good, but I haven't tried them myself yet. As always, try a few different resources.
Bestfares.com has some of the lowest prices, updated several times a day. Check out their section on internet only airfare deals. Some deals require you to subscribe to the magazine ($60/year), but it looks like it comes with lots of benefits that make it worth it to a frequent traveler.
The Transportation Security Administration now has a web site where you can search for the Average Wait Times at most airports. Search by state, airport, day of the week, and hour of the day to find out how early you should arrive at the airport.
Airlines of the Web has a bunch of information about flying and traveling, such as links to frequent flyer web sites.
Speaking of frequent flyer miles, MaxMiles can keep track of all your miles. Enter all your information for your frequent flyer accounts and it will keep a running total for you. It will pick up errors, such as getting miles only for one direction of travel. They also keep track of hotel rewards programs and a couple of credit card reward programs. The only drawback is that it is $29.95 per year. If you have a Yahoo! account, they now have a module on your "My Yahoo!" page that will track your mileage for free.
If you have any comments, if you find a link that doesn't work, or you have a link you think I should add, send me an E-Mail at Meckelnburg@prodigy.net
Nearly all of the major airlines can be found on the Full Service Travel Sites. Only Southwest Airlines is not on the central reservation system that everyone else uses. 
