I'm planning to visit Ireland, Switzerland, Austria, and southern Germany. Ireland will be first, then we'll fly to either Zurich or Munich. Which of the two airports is generally cheaper to fly into?
Having not flown to either, I suggest you check out Air Ryan's site. They are the cheap airline in, throughout and out of Ireland. Don't expect any frills (they recently questioned whether they should be coin locks on their toilets...) but, they are friendly, safe and cheap...
It is difficult to say that one airport is constantly cheaper than another. Too many factors. What where the discount airlines land? Sometimes it is long ways for where they say that they land.
RyanError doesn't fly to anywhere in Switzerland and to nowhere near Munich.
OK, maybe I should qualify that a little. Ryan does fly to Allgäu Airport, near Memmingen, and to Salzburg Airport, near Salzburg. Both are over two hours by public transportation from Munich, but when you consider other airports Ryan flies to, like Beauvais or Hahn, that's not unusual
DON'T use Ryanair! Aer Lingus is almost as cheap but they fly into real airports - both MUC and ZRH. Check with aerlingus.com for fares. Also you get pre-assigned seats for €20 per route upon booking which is great if you want a first row seat. They operate an all Airbus A320 fleet (like Jet Blue), are not part of any airline alliance but credit miles to many Oneworld accounts and their own program... Food and beverages on bord are reasonably priced (as opposed to Ryanair). In Munich you use the same currency as in Dublin whereas at ZRH airport you'd have to change... Aer Lingus fly into T1 in Munich, which means a bit of a walk to get to either the car rentals or the train station...