This page provides ETFdb Ratings for all Airlines ETFs that are listed on U.S. exchanges and tracked by ETF Database. The ETFdb Ratings are transparent, quant-based evaluations of ETFs relative to other products in the same ETFdb Category.he table below includes basic holdings data for all U.S. listed Airlines ETFs that are currently tagged by ETF Database. The table below includes the number of holdings for each ETF and the percentage of assets that the top ten assets make up, if applicable.