NWA.com shows:

Thur, Mar 27 Northwest Airlines 808 Equipment: A330 View Seat Map »

Depart: 5:12 PM Honolulu/Oahu, HI (HNL) Meal: Food for purchase

Arrive: 5:50 AM Minneapolis/St. Paul, MN (MSP) Approx. flight miles: 3,967
Duration: 7 hr 38 min

NWA.com seat map shows:

Honolulu to Minneapolis/St. Paul
Flight: 808, Airbus Industrie A330-300 Duration: 7 hour(s), 38 minute(s

ITN shows:

Flight: 808
Departs
Honolulu (HNL)
27 March
17:12 Arrives
Minneapolis (MSP)
28 March (Next day)
5:50 Notes
Cabin class: P5 F5 Y9 B9 M9 H9 Q9 V9 L9 T9 K0
Meal:
On time:
Distance: 3972 mi
Stops: non-stop
Flight Time: 7:38
Airbus A330Airbus A330

Skyteam online timetable shows:

Flights: Thursday, March 27, 2008
Honolulu, Hawaii, USA -> Minneapolis, Minnesota, USA



Flight From To Aircraft Duration/Stop

NW 808 Honolulu (HNL) 05:12 PM Minneapolis (MSP) 05:50 AM + 1 day(s) 333 7h38min


All of the above say A330 aircraft
Are the times different, maybe?
Can a 757 make it from HNL to MSP without stopping?
I think you're OK!! I'm sure that the Hawai'i regulars and residents will chime in as to their thoughts.