Authorities in the Swiss region of Saastal, which has been cut off from road traffic due to storms and a landslide, on Friday offered to fly tourists out by helicopter. Some 2,200 tourists are stranded in Saastal, most of whom are Swiss, according to a spokesman for the regional crisis team. Not all are in a hurry to leave, he said. Tourists can fly in the helicopter, which takes only a few minutes from Saas-Fee to Stalden, for a sum of some €150 ($166). The road to the valley was buried at one point on Thursday following heavy rainfall and is expected to be passable again on Sunday at the ear…