The AA RTW desk tells me that YQ is now identical on IB and BA codes. It used to be much cheaper to book BA flights under IB codes. I tried checking this using
ITA, pricing a dummy OW CPT-MAD in J, and it shows $3,114 in YQ as either BA or IB!
$3k in YQ doesn't make any sense, so I must be reading this wrong, but the fares do seem show that amount as YQ for both.
IB:
Code:
Fare 1: Carrier YY CIFOW CPT to MAD (rules)
Passenger type ADT, ONE-WAY-ONLY fare, booking code J
Covers CPT-LHR (Business), LHR-MAD (Business)
$5,135.89
United Kingdom Passenger Service Charge (UB) 303.00
South Africa Passenger Service Charge (ZA) 328.00
South Africa Air Passenger Tax (WC) 190.00
South Africa Passenger Safety Charge (EV) 16.00
South Africa Passenger Services and Security Charge (UM) 20.00
(YQ) 3,114.00
Subtotal per passenger $5,571.36
Number of passengers x1
TOTAL AIRFARE & TAXES $5,571.36
BA:
Code:
Fare 1: Carrier BA CFFAFROW CPT to MAD (rules)
Passenger type ADT, ONE-WAY-ONLY fare, booking code C, J
Covers CPT-LHR (Business), LHR-MAD (Business)
$4,331.73
United Kingdom Passenger Service Charge (UB) 303.00
(YQ) 3,114.00
South Africa Passenger Service Charge (ZA) 328.00
South Africa Air Passenger Tax (WC) 190.00
South Africa Passenger Safety Charge (EV) 16.00
South Africa Passenger Services and Security Charge (UM) 20.00
Subtotal per passenger $4,766.55
Number of passengers x1
TOTAL AIRFARE & TAXES $4,766.55