What is the best Flight Simulator for a pc?

I don’t want to spend a whole lot of money but I want one that is very realistic. Any suggestions?

One of the best simulator games out there is Microsoft Flight Simulator X. it older by a couple years but till this day its still popular. I think they just came out with an expansion pack to make it even better. Its 30 bucks i believe but you can get it even cheaper on amazon.

Pro Flight Simulator downloads free – Best Airplane Games