How do customer loyalty programs create switching costs? We estimate the demand effects of tier levels within a frequent flier program by exploiting discrete tier thresholds. We have two main results. First, members increase demand to reach a higher tier level just before the end of the calendar...

We examine the impact of airline codesharing on consumer choice behavior in non-stop international route markets. Using stated preference data, we document that consumer valuation of flights by alien foreign carriers is significantly higher if these flights are offered as codeshare products by...