Original: January 14 & ndash ; The Casablanca Conference , where Franklin D. Roosevelt becomes the first President of the United States to travel by airplane while in office ( Miami , Florida to Morocco to meet with Winston Churchill to discuss World War II ) .
Simplified: January 14 -- Franklin D. Roosevelt becomes the first President of the United States to travel by airplane while in office ( Miami , Florida to Morocco to meet with Winston Churchill to discuss World War II ) .