Airfare codes
Airline Class of Service Codes
A – First Class Discounted
B – Economy/Coach – Usually an upgradeable fare to Business
C – Business Class
D – Business Class Discounted
E – Shuttle Service (no reservation allowed) or Economy/Coach Discounted
F – First Class
G – Conditional Reservation
H – Economy/Coach Discounted – Usually an upgradeable fare to Business
J – Business Class Premium
K – Economy/Coach Discounted
L – Economy/Coach Discounted
M – Economy/Coach Discounted – Usually an upgradeable fare to Business
N – Economy/Coach Discounted
P – First Class Premium
Q – Economy/Coach Discounted
R – First Class Suite or Supersonic (discontinued)
S – Economy/Coach
T – Economy/Coach Discounted
U – Shuttle Service (no reservation needed/seat guaranteed)
V – Economy/Coach Discounted
W – Economy/Coach Premium
X – Economy/Coach Discounted
Y – Economy/Coach
Z – Business Class Discounted
| Airline | First | Restricted First | Business | Restricted Business | Coach |
| Delta | F | A | J,C | D,I | Y,B,M,H,Q,K,L,U,T |
| US Airways | F | P,A | C | D,Z | Y,B,M,H,Q,N,V,W,U,S,T,G,K,U,E,R |
| Northwest | F | F,P | J | C,Z | Y,H,Q,V,K,L,T,V,W |
| Continental | A | C,D | J | Z | Y,H,I,K,L,N,O,Q,S,T,U,V,W,X |
| American | F | P,A | J,D | I | Y,B,C,G,H,K,L,M,N,Q,S,V,W |
| United | F | P,A | C,D | Z | Y,B,M,H,K,L,Q,V,W,U,T,S |
