Ancillary Revenues Now Vital to Airlines' Financial Health
United Airlines collected $5.2 billion in ancillary revenue in 2011, leading all other airlines, according to IdeaWorks research. (Photo: United Continental Holdings)
United Airlines collected $5.2 billion in ancillary revenue in 2011, leading all other airlines, according to IdeaWorks research. (Photo: United Continental Holdings)

Ancillary revenue collected by airlines for products and services ranging from checked bags and extra legroom to co-branded credit cards continues to grow in size and importance to the industry. Fifty world airlines that disclose proceeds from such activities reported $22 billion in ancillary revenue last year, marking a 66-percent increase over 2009 results, according to a new report.