When is the best time to travel to europe for cheap?

Hi all, I want to traveling to Europe, London exactly. But I don't know when the best time to traveling?. I also want to know how many seasons in Europe and when the season began, like summer or other seasons? Thank you if you want to give me answer.

I want to go to Europre (England, Spain, France, Italy, Grecee, and Morocco,Egypt) when i graduate from high school in 2012. when is the best time to go? concerning : Weather and tourism. i dont want it to be crazy hot or filled with tourist.... i might...

im looking at going to europe at the end of this year or the start of next year for a few months, when would be the best time to go? and can i work in england without a visa if i have my british passport?

I am from Canada and i was thinking of trying to plan a 4-8 week trip to Europe to see many places such as Italy, Ireland, Scotland, Spain, France, and Holland. I was hoping to do it in Jan or Feb and i was wondering what the weather is like in those...

Would like to spend about 1 month travelling through the countries by train but when is the best time to go to experience the best weather, the see their local celebrations?

so, I'm goin 2 be in Europe from Sept. 5th- 24th. I arive in London on the 6th. I hav to stay there 1 or 2 nites, bc I promised my uncle who lives there that I would. that being said, here are the places I realy want to visit:Spain (Barcelona mostly...

I want to travel in New Year,where is the best Country in Europe to pass this time of year?

My family and I are trying to plan a trip to Europe in about a year. It would be 2 adults and 2 kids ages 6 and 8. We are thinking of doing a 6 wk stay and try to hit Spain, France, Londen, Germeny, Italy, and Greece We are trying to find out when would...