Note to Congress: You Can Learn From Bag Fees

WASHINGTON (TheStreet) -- Bag fees are unpopular and anti-airline hysteria consumes our country, so it is not surprising that some in Congress want to force airlines to stop charging fees to check a bag.

This is the wrong approach. Bag fees represent a learning opportunity.

In the past few years, the airline industry, which has lost money since the Wright Brothers first flew, has sought to create a profitable business model. It has done this by reducing capacity and adding fees -- primarily bag fees. A plus is that bag fees are paid only by people who use the service.

According to the Bureau of Transportation Statistics, the top three airlines in terms of bag fee revenue in 2011 were Delta (DAL) with $864 million, American (AAMRQ.PK) with $593 million and US Airways (LCC) with $506 million. During the same year, Delta's net income was $854 million while US Airways made $111 million and American, which declared bankruptcy in November, lost $2 billion.

While the airlines believe the BTS numbers might be a bit on the high side, the fact remains that eliminating the revenue from bag fees could push at least two airlines into or close to a loss position.

Speaking of a loss position, isn't that what the U.S. government is in? Yet now Congress wants to bring its financial model to the airline industry. Perhaps it should be the other way around. Since 2003, airlines have moved to reduce costs and raise revenue, a comprehensive approach that seems to be working.