I can't answer anything about distance traveled for funerals, but there are definitely occasions when cadavers were transported long distances for burial. The occurrences I am familiar with involve individuals of significant importance or prestige, though I'm not aware of any reason wealth alone wouldn't be sufficient to have such a treatment, if desired. The difficulty was in the preservation of the body for the amount of time needed to transport it to the desired destination.

Lord Admiral Horatio Nelson is an excellent example - killed in action in the Battle of Trafalgar off Spain, his body was placed in a large container of drinking alcohol to preserve it for the trip home. The funeral was something over two months after his death.

General James Wolfe (of the famous painting "The Death of General Wolfe) was killed on the Plains of Abraham during his assault on Quebec City, which proved successful as he died. He was transported home aboard ship, and had a funeral that was also a bit over two months after his death.