Originally Posted by gregsfortytwo

OP refers to a DTW-SEA flight, not a proper transcon to New York. I know there aren’t any D1 flights to DTW (apart from seasonal Hawaii, although that might be dead again).

AFAIK all continental-48 D1 flights involve one of JFK, BOS, and I think IAD, right? (And then on the other side LAX, SFO, and a very few on SEA.)