Can anyone tell me the approximate cost of a cab from Miami international airport to South Beach?

It's been a couple of years, but I saw another poster say that this is a flat rate-- $24, I think. That sounds about right. Shuttle services, although they might make a few stops on the way, will probably be cheaper.

I think I paid about 25 last year....so plan 25 to 30

Is it $24 one way per person?

one way 2 in a cab with bags s/b safe

Flat rate per cab not per person.

How much are the shuttles?

It's been a long time since I've tried to get a shuttle to MIA from South Beach. It's got to be no more than $10-12 per person. It's a short trip, but they tend to make several stops. If you can purchase a round trip pass, you might save a buck or two. But convenience and the time value of money favor grabbing a cab, frankly.