United Airlines’ 10 Longest Nonstop Boeing 737 Flights

United Airlines’ mainline fleet is larger than that of any other passenger carrier. According to ch-aviation, it has 1,023 aircraft, with the ubiquitous Boeing 737 having more than half. It has 543 737s, not all active, comprising the 737-700, 737-800, 737-900, 737-900ER, 737 MAX 8, and 737 MAX 9.