Atlas gives 10% only on Traveledge or direct airline website but Infinia gives you 5 x 3.33 on Smartbuy, which is 16.66% (Note: prices on Smartbuy may be inflated)
However only 70% of these Infinia points can be used for the next flight booking on Smartbuy, so the real return rate of Infinia for flights on Smartbuy is around 13.46%.
If you cross 3 lacs/year on Atlas you will get an 2500 bonus Atlas edge miles (after 60 days), which is 5000 airmiles (which is an extra 1.66% return on 3 lacs spend in 1 year) so Atlas return will then become 11.66%, still less than Infinia 13.46%
If you cross 7.5 lacs/year on Atlas you will get both 2500 + 5000 Atlas edge miles (after 60 days), which is 15000 airmiles (which is an extra 2% return on 7.5 lacs spend in 1 year) so Atlas return will then become 12%, still less than Infinia 13.46%
If you cross 15 lacs/year on Atlas you will get 2500 + 5000 + 10000 Atlas edge miles (after 60 days), which is 35000 airmiles (which is an extra 2.33% return on 15 lacs spend in 1 year) so Atlas return will then become 12.33%, still less than Infinia 13.46%.
However, Magnus Burgundy LTF beats Infinia 2250 for flights (and almost everything else)
24% return (up to 2 lacs spend per calendar month) on booking flights on TRAVELEDGE (usually a 10% price markup on international flights and/or booking more than one seat in the same PNR), which is more than Infinia 13.46%.
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