[UPDATE, April 8, 2016: We published new information related to this article here.]

Despite significant consolidation among major U.S. airlines during the past decade, contracting with corporations is no less complex. Why?

For one thing, published pricing is getting ever-more intricate. Some would say convoluted. That's because airlines continue to apply more sophisticated revenue management techniques. They use more booking classes and constantly play around with inventories and fare rules, oftentimes market by market. In turn, many contracts — especially for bigger companies — get . . .

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