If you are going to buy a Eurail pass, you may want to fly into London, then travel across the continent to Innsbruck, stopping over, perhaps, for a day or two in Paris en route. Frankfurt also often has low airfares. History is something of a guide to what you might expect to pay this year. Of course, you need to make allowances for inflation. Obviously, you need to shop around.
Airlines typically charge more for tickets if trips exceed thirty days in duration.
Since the St. Mary s program lasts five weeks, you will face this obstacle. Consequently, some of the fares that you see advertised will not be available to you since they will be restricted to travel lasting less than 30 days. The fastest way to get a quick figure is to log onto the Council Travel website and do a quick search. Doing a quick search will give you a place to start. A transatlantic flight often involves three flights and two connections.