Strictly speaking, you weren't wrong. The 747 is often referred to as the first "jumbo jet," although that's not quite a term of art to the extent that "widebody" is. Your response might not have been considered specific enough by the judges. (However, given the wording of the clue, I think there's a strong argument they would have had to accept something along the lines of "widebody passenger jet.")
BTW, why was the question even raised above as to whether "Boeing 747" was acceptable? That's the make and model of the plane.
It used to be much more common for widebodies like DC-10's and 747's to be deployed on domestic routes in the U.S., and not just those of transcontinental length (and you still see that a lot in some other countries). Now, even when you fly from one of NYC's airports to LAX for example, you'll usually get a single-aisle Boeing 737 or 757, or an Airbus 320, depending on the airline. Some airlines these days even use single-aisle Boeing 757's, or the new 737 MAX, for shorter transatlantic routes such as Newark to London. As mentioned by other commenters above, sometimes you'll still end up on a widebody for an intra-U.S. flight -- like when I was on a 777 from Atlanta to JFK one time last year. But the trend has long been towards smaller planes which allow for the airlines to operate more flights per day on a given route and/or fly with higher "load factors" (percentage of the seats that are full; operating with higher load factors is generally more profitable for the airlines. Flights in 2017 are much more likely to be completely full than was the case 2 or 3 decades ago.). And on many routes of about 3 hours flying time or less, you're stuck on even tinier "regional" jets which are single aisle, with the economy class seats in either a 1-2 or 2-2 configuration in each row, and a relatively small number of rows.Cat Hammarskjold wrote: ↑Tue Jul 04, 2017 8:49 pmSo are 747's and other two-aisle aircraft only for international flights these days, or do they do some domestic runs? I've flown from some fairly busy airports to others, like from Denver to LAX or Philadelphia to Miami or Washington National to Miami, but the fact that these planes are real fascinates me, and I was just curious what airports I'd have to fly to and from to be on one of these things. I don't have a passport.