Florida offers it .
In the UK the Open University.

There is a very good college level Latin course available for free online, in audio, called Latinum

This course, however, has no exams or credit.

I can’t give you a complete list, but only the programs I know. The only one of all that I’m familiar with that offers Classical Studies (but not Latin) via distance learning is U London:

There could be others, but that’s the only one I know for certain.