Should I invest in airline stocks in 2021?

The best airlines to invest in are Southwest Airlines, Delta Airlines, United Continental Holdings Inc., and American Airlines Group.

Airlines stocks are subject to several factors like competition, fuel price, regulations on domestic flights, foreign currency fluctuations. That's why it is advised that you study individual airline companies before investing in them.

It's not a very smart idea to invest in airlines while we're amid this pandemic. There are so many factors that come into play when investing in an airline, and we don't know how those will turn out. The price of fuel and the volume of flights are just two factors that we cannot account for when trying to decide if an airline is a good investment or not. You throw in all the variables about this new disease into the mix, and it's even riskier than normal to invest in airlines.