http://eurotrip.com/…

I went to www.itasoftware.com selected month-long search, guessed your stay at 20-21 nights, entered from YUL to BCN;AMS;VIERG;WAW;KRK (just like that, no space, separated by semicolon) and it found 2 things that I think are important. First, departures after June 15 are at least $250 more. Second, the cheapest it found is Air Transat to Vienna, departing June 7 and back June 29, at $752 USD.

Another strategy to consider… take the cheapest roundtrip to London, then add flight hop to your first city, then back to London from your final city. Or, look at Air Transat’s route map and choose a return from another city—all of this to save you backtrack time and expense. (June 7, YUL-LGW $589USD return, for example).

Also check out www.canadian-affair….

I am grateful to you for your help. I’ll be going then before June 15.
Thank’s

I suggest you look at: http://www.FlyLowBud… or a similar site…
i’m sure it will get you in the right direction….