Northwest has never flown 752s to Hawaii with a passenger flight rule. Northwest has yet to achieve their ETOPS certification, and, are the last of the few major airlines to do so. The biggest push to gain certification is to operate their 330s trans-atlantic routes.
Perhaps with the arrival of the 753, and their ETOPS certification, you may very well see a NW -57 in the islands.
Regarding ATA's PHX-OGG loads...it's a very profitable route for them. The flight originates in MDW, and loses about half of its pax to golf-lovers in PHX. The aircraft then continues on, quite full, to OGG, which has very high yields for them as it has a great arrival time (early!).
I flew the MDW-PHX-OGG direct route twice when ATA was selling their passbooks, which allowed for, essentially, four Y-class roundtrips at the last minute for around 2,400$. $600 for a last-minute ticket to OGG from the midwest is a steal! Unfortunately, they were discontinued on September 21, 2001.
I mean, for the right price I’ll fight a lion. - Mike Tyson