The airline industry is seeing a major consolidation as Frontier and Spirit Airlines have agreed to merge in a deal valued at $6.6 billion dollars. Frontier will control just over 51% of the company, and Spirit will control the other 48%, creating what would become the fifth-largest airline in the U.S. The deal was approved over the weekend, with Spirit CEO Ted Christie saying that the merger aims to create an aggressive, low-fare competitor focused on consumer-friendly pricing. John Grant, Senior Analyst at OAG explains the gravity of the merger, and the wider impact it could have on competition and the airline industry as a whole.