Airfare Codes

Airline Class of Service Codes

A - First Class Discounted
B - Economy/Coach – Usually an upgradable 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 upgradable fare to Business
J - Business Class Premium
K - Economy/Coach Discounted
L - Economy/Coach Discounted
M - Economy/Coach Discounted – Usually an upgradable 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