Really, fares do not go down when the business cycle picks up in September after the July and August doldrums. That's why there are $2K biz fares to many European locations during the peak summer months...business travelers don't so much business in Europe during the summer (the French take all of August off) and J/C cabins go begging, thus the deep discounts. Come September the world returns to normal and fares jump up in premium cabins...though it's the opposite for economy fares which rise during the summer since there's great demand for flights in that cabin, and they drop in the fall and winter to Europe.