Looking at fundamentals, this is still a bad time for airlines all over the world and it might not change anytime soon, but with the vaccine rollout and the airline travel hopefully going slowly back to normal in 2021, it might be a good time to look into undervalued stocks, for a medium to long term investment. Technically, AAL seems to be the best bet, looking at the monthly chart. Medium term target would be $30 and long term target 50-60.