Cmb ione3 6038<br />cmb done3 6938<br /><br />I am not sure if a 15% reduction is base fare is worth it.<br />after YQ and tax, the saving is evening less.<br /><br />however, D class earns a lot more miles in many programs.<br /><br />AY D class earns COS 100 on AA and 40% EQD<br />BA D class earns COS150 on AS.<br />if one try to get a few segemetns in AY and BA, it can negate the saving