My mom her cousin are going on a European vacation and will start their journey in Austria, basing i

My mom her cousin are going on a European vacation and will start their journey in Austria, basing in Salzburg. The question: Do they fly into Vienna and pick up rental car at airport-drive to Salzburg or take the connecting flight from Vienna into Salzburg and pick up car there? I see it's about 3.5 hours to drive the distance between the two towns. I'm not quite clear if both airports have the rental car agencies on site or if they are off site. If either place is offsite-are there shuttles to take them to their car?
If they want to visit other places after Salzburg and need the car, why not take a taxi from Salzburg airport to the hotel (not really disney cruise reviews a distance to the Old Town from AP), and pick-up rental car once they leave Salzburg?
Finally: disney cruise reviews If money is an issue they could check rates for rental cars from nearby Freilassing, Germany. Often it is much cheaper to rent in Germany than in Austria. Unless this would mean a drop-off in another country as mentioned before. Though the penalty charge for cross-border rentals between Germany and Austria or v.v. is often not as steep as elsewhere..
If they haven't decided about the actual flight and aren't going to do anything IN Vienna then they should look at the possibility of flying into Munich disney cruise reviews as well. Easy to take a train to Salzburg disney cruise reviews which takes only 1.5 hours. Lots of possibilities here.
At Salzburg airport there are several rental agencies in a garage disney cruise reviews connected by a walkway to the terminal. disney cruise reviews The Salzburg airport is quite compact and the reply to the original posting would be that it is better to fly to Salzburg and rent there, as the drive between Vienna and Salzburg is longer than you think and not particulary interesting. Check rental disney cruise reviews conditions about bringing the car to other countries, as from the airport in Salzburg you risk going over the border with Germany without even noticing.
How many nights/days are they basing in Salzburg? Where else are they taking the car? Will they return the car where they pick it up, or at least in the same country? Where do they plan (or would like to) to fly home from?