Originally Posted by jrl767

15. (1995)A thorough perusal of a 1995 OAG checking all the traditional gateways as well as a few that weren’t led to the surprising discovery of a major and longstanding U.S. airline that per that 1995 OAG referenced operated just a single daily nonstop transcontinental U.S. domestic flight. Can you identify the airline, the route and the aircraft type involved?

Since there’s nothing in the phrasing of the question to indicate that the airline of record actually had a long continuous history of nonstop TCON operations, I’m thinking Northwest. I know they had run SEA<>IAD with a 707-351B/C in the mid- to late 1970s, but in the 1995 timeframe I recall they had ventured into SEA<>BOS. I’m not sure of the equipment, but a 757 certainly seems plausible

Good call, J! Northwest it is, on the BOS <> SEA route to boot. However, somewhat surprisingly, the aircraft was not a 757. I'll post the schedule if you wanna fill in the correct aircraft -

Northwest NW 179 Boston (BOS) 630p-940p DS Seattle (SEA) ___________ Daily