| 1 | NWA | Northwest Airlines, Inc. | IATA: NW, Callsign: Northwest, IATA Prefix: 012, Merged into Delta Air Lines DL/DAL | USA | AVCODES |
| 2 | NWA | Northwest Orient Airlines, Inc. | IATA: NW, Callsign: Northwest, IATA Prefix: 012, Name change to Northwest Airlines | USA | AVCODES |
| 3 | NWA | Northwest Airlines | IATA: NW | | ICAO1 |
| 4 | NWA | | | | TRAFFIC |
| 5 | NWAB | NWA TRANSPORTATION | | | SCAC4 |
| 6 | NWAE | NORTHWEST ARKANSAS TRUCK AND EQUIPM | | | SCAC3 |
| 7 | NWAG | NORTHWEST AGRIGULTURAL COOPERATIVE | | | SCAC3 |
| 8 | NWAI | NICKELS BOAT WORKS INC | | | SCAC4 |
| 9 | NWAJ | NU-WAY TRANSPORTATION SERVICE INC | | | SCAC3 |
| 10 | NWAK | NEW-ARK TRUCKING INC | | | SCAC3 |
| 11 | NWAK | NORTHWEST FORWARDERS INC | | | SCAC4 |
| 12 | NWAM | NOW AMERICA | | | SCAC3 |
| 13 | NWAM | NINE ONE FIVE TWO-ZERO ZERO TWO THR | | | SCAC4 |
| 14 | NWAP | NORTHWEST ARKANSAS TRANSPORTATION I | | | SCAC3 |
| 15 | NWAP | NEWELL TRANSPORTATION LLC | | | SCAC4 |
| 16 | NWAS | NEWTON & SONS, INC | | | SCAC3 |
| 17 | NWAW | NORTHWEST AIRLINES (AGENT AIT WORLD | | | SCAC4 |
| 18 | NWAX | BP Global Special Products (America) Inc. | added 1/2002; eliminated 1/2004; 7/2005 (not listed) | | NAKINA |
| 19 | NWAX | Dussek Campbell, Inc. | added 7/2000; 7/2000; eliminated 1/2002 | | NAKINA |
| 20 | NWAX | National Wax Co. | added 4/1962; 7/1965-1/1994; eliminated 7/2000 | | NAKINA |
| 21 | NWAX | National Wax Co. | added 4/62; 7/65-1/94; eliminated 7/2000 | | NRHS |
| 22 | NWAX | Dussek Campbell, Inc. | added 7/2000; 7/2000 | | NRHS |
| 23 | NWAX | BP GLOBAL SPECIAL PRODUCTS (AMERICA), INC. [DUSSEK CAMPBELL, INC.; NATIONAL WAX COMPANY] | | | PWRC |
| 24 | NWAX | National Wax (BP Global Special Products) | | | RSRV |
| 25 | NWAX | NATIONAL WAX CO | | | SCAC3 |
| 26 | NWAY | NEWAY-LOVE DISTRIBUTION INC | | | SCAC3 |
