Yes at least some do - I saw one last week - but it will be weather dependent. Cold clear weather with little wind is what's needed. Too much wind/rain/snow and they are grounded.
I believe they can only fly either early in the morning, or late in the afternoon.
Also VERY dependant on the weather.
I went to a balooning festival a few years ago and spent the whole day there. Only ONE baloon took off all day, and that came down again after a few hundred yards.