Investors looking for stocks in the Transportation - Airline sector might want to consider either International Consolidated Airlines Group SA (ICAGY) or Frontier Group Holdings (ULCC) . But which of these two stocks offers value investors a better bang for their buck right now? We'll need to take a closer look.Everyone has their own methods for finding great value opportunities, but our model includes pairing an impressive grade in the Value category of our Style Scores system with a strong Zacks Rank. The ...