So I have real flight program already. But I don't have a radio for it. I'm trying to figure out my options. I'm trying to stay semi cheap. I also heard that there is a way to buy a remote that works for your actual RC plane, that has a transmitter cord that you can use on the real flight simulator. Any info is much appreciated. Thanks a bunch.

Ummm...if you bought the Realflight second hand...and did not get the remote....

then it is useless... they have serial numbers that need to match.

is there any programs that compare to real flight that come with a controller?

If you're looking for a simulation that uses an actual R/C transmitter for it's controller, and the sim must be comparable to RealFlight, then no, there isn't one.

There are a number of sims that people consider to be equal to or better than all the others. And none of them are sold with an R/C transmitter as the device used to connect to your pc to operate the model in the simulation.

so if i end up getting the FMS remote or something such as, will it work with real flight?

Yes and No...you NEED the original controller that came with YOUR copy of Realflight so the serial numbers match....

no the FMS controller won't work by itself
Yes, you can use your own TX with just about any sim, but you still need the original cables (at least with the good respectable ones)
with Realflight you set it up like a buddy box
with Aerofly Pro (which I use) it comes either with a TX or a cable... I use just the cable and use my own 14mZ on the sim......