We have travelled to Europe, in Canada and throughout the US as well as in Mexico. Friends swear by sites such as Orbitz, Expedia, etc and now for the past month I have been using Yappa to track flights with over five airlines.
Well, after much searching, comparing and recording of information, we just went ahead and booked our flight from Detroit (DTW) to Ft Myers and returning from FLL yesterday. I was shocked and pleasantly surprised to find out that it was cheaper for me to book directly on the airline website than to go with a travel agent or third party website.
Secondly, I was expecting to have to fly with Spirit for the best schedule and deal. Low and behold, Northwest was even less expensive and no dealing with paying for bags (I hope) and not great service (again, I hope). When we told our traveling companions, they were thrilled.
When we have gone anywhere in the US, Canada or Mexico, I have yet to use a third party website or a travel agent for flights. Now, I will say this, we always have to travel at peak times because our traveling friends are in educaiton, and we book ahead to make sure we get the flights, hotels and resorts we want, so this may be why. I do see last minute deals which are really good with those other websites though.