Hidden perils of airline code-sharing

The practice of one airline selling seats on another carrier’s planes with its own flight numbers has been around for years, and many travelers are familiar with the term “code-sharing.” Yet even experienced fliers continue to be surprised by what amounts to false advertising.

It’s holiday time, and I’d love to write columns about how seamless and hassle-free travel is — which is true for me in most cases — but I keep hearing from readers about questionable airline behavior. In the latest example, LACSA, Costa Rica’s national airline, may have misled some customers…