Bigger fees are compensating for shorter flight manifests. For the first half of 2009, airlines in the United States have raked in $3.8 billion from cancellation, re-booking, checked bag and other fees. Data from the U.S. Department of Transportation puts this result up from the $2.3 billion airlines generated from these fees in the first half of 2008.

While passengers haven't been thrilled with these additional charges, the airlines have had to compensate for a significant drop in passenger traffic, as the industry copes with the worst travel session since the terror attacks of September 11, 2001.

These are tough economic times for the nation, most would agree, and one hard-hit sector has been the airline sector, specifically the major carriers.

Surging fuel costs, the increased precautions and reviews required for the post-September 11 era, and intensifying competition for international routes has led to large losses among many major carriers - - a condition that has forced them to raise fares and implement other cost-cutting changes.

Most have also instituted a baggage fee for a passenger's second bag, with some carriers charging for all bags. Still, for the most part travelers have taken the baggage fees in stride. Although viewed as a nuisance by many travelers, the reality is a second bag, in particular, is optional weight that increases flying costs per mile. And with aviation fuel zooming past latte-price levels, that's no significant expense.

Still, US Airways Inc. may have gone one too far with the fee system. Effective today, US Airways will start charging for water on flights by coach passengers, The Wall Street Journal reported Friday (subscription required). Bottled water will be $2. Passengers flying first class are exempt from the extra fee.