A week for eight people, lodging and food, before flights. Each page breaks the figure down by group size and month, and shows whether driving beats flying from eight major cities.
Across the 40 destinations priced here, a week for eight — lodging and food, before anyone travels — runs from $7,270 in Scottsdale to $24,800 in Jackson Hole, 3.4× apart. The middle of the library is $11,400.
How much the month matters depends on the kind of trip. Parks swing a median 94% between their cheapest and dearest month; cities only 32%. GSA rates one of them at one price all year.
Fares are where your group's own geography comes in, so they are not in these figures. Each destination page prices flying and driving from eight major cities. The Department of Transportation publishes an average fare from at least one of those cities for 26 of the 40; the rest are modelled from distance, and the page says which is which.
Typical means the median member. The swing is between a place’s cheapest and most expensive month for the same property.