Originally Posted by Im a new user

After selecting flights, you should see something like this:

This is the number of points you will get if you credit the flights to IB+. You could then use the IB+ accrual rates for IB flights to determine the booking class. If IB+ earns 25%, then it's Q/O/A. If IB+ earns 50%, then it's K/M/L/F/V/S/Z/N/G. If IB+ earns 100%, then it's Y/B/H. Looking at the AA accrual chart for IB flights, for EQM purposes it looks as if it is enough to identify a group of fare codes like this, you don't need the exact fare code.

My example is for ARN-MAD-ARN. The total distance is 3,234 miles and if the flights earn 1,619 Avios in total to IB+, it means that you would be booked in a fare bucket which earns at 50% to IB+, meaning one of K/M/L/F/V/S/Z/N/G. There may be a small difference in the distance used by gcmap.com and the distance used by IB.