4. Southwest – $1.65 Billion
Having too many bags, flying with a pet and even sending your child alone on a plane will cost you when you fly with Southwest. The airline made $219 million in 2012 for these kinds of services. And, their rewards program might be rewarding them more than you. Southwest racked in $180 million from their Rapid Rewards program. Southwest earned more than $17 billion dollars, with more than one billion in ancillary revenue.
Southwest has built its reputation on not charging for checked bags but it’s starting to change, if only slightly. As of February 2013, on AirTran flights, a customer’s first checked bag fee was increased to $25, and second checked bag is now $35. Your first two bags remain free on Southwest, but overweight and additional bags now cost $75.