Airline Award/Upgrade Classes supported by ExpertFlyer.com®
Airline Class Description
Aer Lingus (EI) U Business - Awards and Upgrades
  T Economy - Awards
     
Aeroflot (SU) O Business - Award
  X Economy - Award
     
Air Canada (AC) I Exec First - Award
  R Exec First - Upgrade
     
Air China International (CA) O First - Award
  I Business - Award
  X Coach - Award
     
Air Europa Lineas Aereas (UX) P Business - Classic Award
  I Business - Flex Award
  A Economy - Classic Award
  B Economy - Flex Award
     
Air France (AF) A First - Award
  O Business - Award
  E On transatlantic flights, E class is a Business Award booking class reserved for Flying Blue members with elite status. On all other flights, E class is a regular paid Economy fare.
  X Economy - Award
  W Coach - Awards reserved for Flying Blue members with elite status
     
Air New Zealand (NZ) I Business - Awards using Airpoints & Complimentary upgrades for Golds
  R Business - Complimentary Upgrades for Gold Elites
  Z Business - Upgrade
  O Premium Economy & Complimentary upgrades into Premium Economy
  X Economy - Award
     
Air Tahiti Nui (TN) A First - Award
  I Business - Award
  Z Business Upgrade only using Air Tahiti Miles, not miles of other airlines
  W Coach - Award
     
Alaska Airlines (AS) A First - Saver Award
  U First - Upgrade
  V Coach Bonus Travel Ticket (i.e. Bumps Ticket)
  W Coach - Saver Award
     
Alitalia (AZ) Z Business - Award
  U Economy - Award
     
American Airlines (AA) F First - AAnytime Award
  Z First - MileSAAver Award
  X First - Domestic upgrade from Coach using 500 mile Stickers/EXP Status/Y-B tickets for elites on 2 class flights. (Only viewable on EF 24 hrs before the departure of the flight.) Also used for certain promotional upgrades by travel and corporate agents for international flights.
  A First - upgrade using Miles/VIP or restricted purchase of First on all 2 class Domestic flights
  J Business - AAnytime Award
  U Business - MileSAAver Award
  R Business - Domestic upgrade from Coach using 500 mile Stickers/EXP Status/or Y-B tickets for elites on 3 class flights and on flights between the U.S., Canada, Mexico, The Bahamas, Bermuda, the Caribbean and between the U.S. and Central America. (Only viewable on EF 24 hrs before the departure of the flight.) Also used for certain promotional upgrades by travel and corporate agents, and paid business class inventory, on international flights.
  C Business - Upgrade from Coach using Miles/eVIP on all 3-class and Int'l 2-class flights
  Y Coach - AAnytime Award
  T Coach - MileSAAver Award
     
British Midland Airways (BMI) (BD) I Business Award
  X Coach Award
     
Brussels Airlines (SN) I Business - Award
  X Economy - Award
     
China Southern Airlines (CZ) P First - Award
  I Business - Award
  O Economy - Award
     
CSA Czech Airlines (OK) Z Business - Award
  E Economy - Award
     
Delta Air Lines (DL) V First - Domestic complimentary upgrades for elites from published coach fares within or between the continental U.S., Alaska, Canada, Mexico and the Caribbean
  G First - Domestic upgrades using Miles or PMU (Platinum Medallion Upgrade)/SWU (System Wide Upgrade) certificates from Y,B,M,H,Q,K fares within or between the 50 United States, Canada, the Caribbean, Bermuda, and Mexico
  X Business - Complimentary upgrades for elites from published coach fares within or between the continental U.S., Alaska, Canada, Mexico and the Caribbean
  Z Business - Upgrades using Miles or PMU (Platinum Medallion Upgrade)/SWU (System Wide Upgrade) certificates from Y,B,M,H,Q,K fares within or between the 50 United States, Canada, the Caribbean, Bermuda, and Mexico and Y,B,M fares for all other international travel
  E Coach - Promotional Award
     
El Al (LY) P First - Awards
  A First - Points Upgrades
  X Business - Awards
  R Business - Points Upgrades
  J Economy - Awards
     
Emirates (EK) Z First - Award & Upgrade
  A First - Peak Award
  D Business - Award
  C Business - Peak Award
  I Business - Upgrade
  N Economy - Award
  X Economy award used when using frequent flyer miles of Emirates partner airlines.
  W Economy - Peak Award
     
Finnair (AY) X Economy - Award
     
Gol Transportes Aereos (G3) I Business - Award
  X Economy - Award
     
Hawaiian Airlines (HA) P First - Flex Award/Upgrade
  T Economy - Award
  Q Economy - Flex Award
     
Kingfisher (IT) Z Business - Award
  R Economy - Award
     
Korean Air (KE) A First - Award
     
Malaysia Airlines (MH) T Economy - Award
     
Qantas Airways (QF) P First - Award
  U Business - Award
  Z Premium Economy - Award
  X Economy - Award
     
Shanghai Airlines (FM) O First - Award
  I Business - Award
  X Coach - Award
     
SWISS (LX) O First - Awards & Upgrades
  I Business - Awards & Upgrades
  X Coach - Award
     
TAM Linhas Aereas (JJ) L Domestic Economy Award