I work for 9E and we get the same flight benefits as our mother airline-NW.

Adria Airways-ZED Medium
Aer Lingus-ZED Medium
Aeroflot-ZED Medium
Aeromexico-ZED Medium
Aegean-ZED Medium
Air Astana-ZED Medium
Air Berlin-ZED Medium
Air Calin-ZED Medium
Air Canada-ZED Medium
Air Europa-ZED Medium
Air France-ZED Medium
Air India-ZED Medium
Air Jamaica-ZED Medium
Air Malta-ZED Medium
Air New Zealand-ID90
Air One-ZED Medium
Air Pacific-ID90
Air Tahiti-ZED Medium
Air Tahiti Nui-ZED Medium
Air Wisconsin-ZED Medium
Air Zimbabwe-ZED Medium
Alaska-$15 flat fee
Alitalia-ZED Low
All Nippon-ZED Medium
American-ZED Medium
Asiana-ID90
Austrian-ZED Medium
Avianca-ZED Medium
Bearskin-ZED Medium
Braathens-ID90
British Airways-ZED Medium
British Midland-ZED Medium
Brussels Airlines-ZED Medium
BWIA-ID90
Cape Air-ZED Medium
Cathay Pacific-ZED Medium
Cayman Airways-ZED Medium
China Airlines-ZED Medium
Colgan-ID90
Continental-ZED Medium
Copa-ZED Medium
Croatia Airlines-ZED Medium
Czech Airlines-ZED Low
Delta-ZED Medium
Dragonair-ZED Medium
Egypt Air-ID90
El Al-ZED Medium
Emirates-ZED Medium
ERA Aviation-$10 flat fee
Eritrean-ZED Medium
Estonian-ZED Medium
EthiopiaZED Medium
Etihad-ZED Medium
Eurowings-ID90
Eva Air-ZED Medium
Finnair-ZED Medium
Fly Be-ZED Medium
Frontier-ZED Medium
GB Airways-ZED Medium
Great Lakes-ZED Medium
Gulf Air-ZED Medium
Gulfstream-ZED Medium
Hageland-ZED Medium
Hawaiian-ZED Medium
Horizon-$15 flat fee
Iberia-ZED Medium
Icelandair-ZED Medium
Japan Airlines-ID75
JAT Airways-ZED Medium
Jet Airways-ZED Medium
Jetblue-ZED Medium
Kenya Airways-ZED Medium
KLM-ZED Medium
Korean-ZED Low
Kuwait Airways-ZED Medium
LACSA-ZED Medium
LAN Airlines-ZED Medium
Lithuanian-ZED Medium
LOT Polish-ZED Medium
LTU-ZED Medium
Lufthansa-ZED Medium
Macedonian-ZED Medium
Maersk-ZED Medium
Malaysia-ZED Medium
Malev-ZED Medium
Martinair-ZED Medium
Meridiana-ZED Medium
Mesa-ZED Medium
Mesaba-Free
Mexicana-ZED Medium
Middle East-ZED Medium
Midwest-ZED Medium
Northwest-Free
Olympic-ZED Medium
Oman Air-ZED Medium
Pacific Wings-ID90
Pakistan-ID90
Pen Air-ZED Medium
Philippine-ZED Medium
Qantas-ZED Medium
Qatar-ZED Medium
Royal Jordanian-ZED Medium
Saudi Arabian-ZED Medium
SAS-ZED Medium
Singapore-ID75
Skywest-ZED Medium
South African-ZED Medium
Southwest-ZED Medium
Sri Lankan-ZED Medium
Swiss-ZED Medium
Taca-ZED Medium
TAP Air Portugal-ZED Medium
Tarom-ZED Medium
Thai-ZED Medium
Turkish-ZED Medium
USAirways-ZED Medium
Virgin Atlantic-ZED Medium
West Jet-$25 flat fee
Yemen Airways-ZED Medium