The cheapest way to the airport. Nothing listed is quicker.
Trolleybus 10 to the old town
10 · Salzburg Linien (Salzburger Verkehrsverbund)Pickup, hours & luggage
Boards at. F.-Hanusch-Platz, by the Salzach at the old town, towards Walserfeld
EUR 2.60 for the 1h ticket, valid for any number of rides within 60 minutes. Buy it at the stop machine or in the apps; nothing is sold on board. Children under six ride free.
Luggage. No luggage rule or rack is stated; it is an ordinary city trolleybus.
Hours. Every 10 minutes on weekdays by day, 15 on Saturdays, 20 on Sundays. Saturday from 05:30 to 00:29, Sunday from 06:10 to 00:10.