This paper studies the impact of a disclosure program for airline on-time performance, which ranks the airlines monthly regarding to the percentage of the flights arriving less than 15 minutes late. Based on the mandated disclosure program airline on-time performance, this paper uses the fraction of airline flights arriving time slightly less and slightly more than 15 minutes as the treatment and control groups, respectively, to implement a regression discontinuity design. We find that firms in this industry are heterogeneous in how they respond to the disclosure program. Our findings are robust to parametric and nonparametric estimates and different model specifications.