A Southwest Boeing 737-700 departs from Denver International Airport (Photo: AirlineGeeks | Parker Davis)

Deep Dive: The Shortest Routes of the Major US Carriers

With air travel picking back up around the globe, Singapore Airlines has resumed the longest flight in the world from the city-state of Singapore to New York City. Though unlike before the pandemic, the flight now operates into New York's John F. Kennedy International Airport rather than across the Upper New York Bay in Newark, N.J. It's enough to wonder what the opposite is — what the shortest routes are — and with international travel still at a minimum, what…