In his Guidebooks, Rick has always recommends using a Travel Agent to book flights to Europe, and I that's the method I've also used for the past few years.
I'm now in the process of setting up my next trip to Europe in May and June (including of course a RS Tour!), and decided this was a good time to book the flights.
Over the last week or so, I spent days researching various flight combinations on the net. The process doesn't normally take that long, but this year I'm working with a very narrow "window" so it was a bit of a process finding an open-jaw combination that would work.
Finally, I took my findings to the Travel Agent for booking, but her reply was not exactly what I had anticipated. Apparently the flights I had chosen were possible, but the return leg was going to cost $3400! Back to the drawing board.
After several hours of further research, I took my new list of flights to the TA, with the impression that I had it pretty well sorted this time. Once more she proved that it's a good idea to consult the professionals. She took the best price I could find, and reduced that by a further $300+!!! Although I had to pay a small "service charge" I feel it was good value, especially as any airline tickets purchased here are covered by a Travel Assurance Fund. If the airline ends up following Zoom or Canada 3000 down the path to bankruptcy, the tickets are covered.
Needless to say, I'll definitely be using Travel Agents on future trips!