A little off topic, but:

Tier Points awarded to BAC (percentage of miles flown)

From 1 April 2025 (international flights):

• Economy Lowest (G, N, T, V): 2%
• Economy Low (K, L, M, S, O, Q, W): 3.5%
• Economy Flexible (Y, B, H): 7.5%
• Business Low (I, Z): 12.5%
• Business Flexible (J, C, D): 25%

From 1 April 2025 (domestic flights):

• Economy Lowest (H, L, Q, Y): 2%