gemac is on the money here.

Through looking at NW's timetable, by default you must be coming in on NW803 (MSP-LAX-HNL). The LAX-HNL is blocked at 5 hours and 20 minutes for now, unless that changes between now and departure. If the winds-aloft forecast are showing strong headwinds that day, you WILL NOT make it here within the 5:20 block ontime. Headwinds seem to be near their strongest around the winter time. This is something I would look out for.

I concur with the other posters; book the later one.