Planning Airfare

We've been thinking that October would be a great month to make our trip, since we figured it was a "shoulder season" time when prices would be more attractive. However, looking at this flight trend tracker from Kayak, it looks like October is the second most expensive month for air travel. Looks like we'll want to look at late October or November to get a better deal on airfare. With 7 people in our family going, the price difference will really add up.