Trolleybus 10 to the old townorTrolleybus 2 to the Hauptbahnhof?

The short answer

For one traveler they cost the same. That does not change up to 8 travelers.

The Trolleybus 10 to the old town is quicker: 19 min against 21 min.

Trolleybus 10 to the old town: 05:04–00:44. Trolleybus 2 to the Hauptbahnhof: 05:25–23:46.

Priced against each other

Whole-party totals · adult fares

What each costs for the whole party, in EUR. The cheaper of the two is marked on every row.
Travelers	Trolleybus 10 to the old town	Trolleybus 2 to the Hauptbahnhof	Difference
1	€2.60	€2.60	same
2	€5.20	€5.20	same
3	€7.80	€7.80	same
4	€10.40	€10.40	same
5	€13	€13	same
6	€15.60	€15.60	same
7	€18.20	€18.20	same
8	€20.80	€20.80	same

Where each one leaves you

10 · Salzburg Linien (Salzburger Verkehrsverbund)Trolleybus 10 to the old town

From: Airport Terminal stop, in front of the terminal
To: Rathaus, at the edge of the old town by the Salzach, via F.-Hanusch-Platz
Luggage: No luggage rule or rack is stated; it is an ordinary city trolleybus.
Runs: 05:04–00:44
Journey: 19 min

While the Neutor tunnel is closed, line 10 runs round by Mülln and its times differ from the usual timetable.

Get off at F.-Hanusch-Platz or Rathaus for the old town; the bus goes on across the river.

2 · Salzburg Linien (Salzburger Verkehrsverbund)Trolleybus 2 to the Hauptbahnhof

From: Airport Terminal stop, in front of the terminal
To: Salzburg Hauptbahnhof, then on to Mirabellplatz in the new town
Luggage: No luggage rule or rack is stated; it is an ordinary city trolleybus.
Runs: 05:25–23:46
Journey: 21 min

For the old town, line 10 is the direct bus; line 2 reaches Mirabellplatz, across the river from it, 27 minutes out.