Hi Bob,
I am pleased to hear that you think the tour is fabulous.. I can tell you that you will be flying from La Paz to Salta
Regarding the Uyuni flats, these were initially my intended flats to visit. However, they do have issues, Uyuni as a town is very rural, therefore the hotels in the area are often basic, with a relatively small selection to use. There are salt hotels, but these are often lacking heating which is less than ideal as the flats become exceptionally cold at night. However, in Argentina the area surrounding the flats, whilst being incredibly beautiful and mountainous has plenty of hotels and importantly diverse excursions, helping to depict the ‘contrasts of South America’! The flats visited are called the Salinas Grandes and are similar to the Uyuni flats – You will still be able to take incredible pictures (thanks to the varsity of the flats!)
I hope this helps,
Kind Regards,
Mildred.