BOM had overnights in EU (AMS or CDG) hence taxes for 2departures/taxes
The domestic portion doesn't matter what arrival city--no mileage costs.
I did NRT/DTW--we have 8 gateway options.
I did all of my flights out of CVG so there were airport facility charges @ gateway cities on return? I don't know. I don't want to redo them all! What would be better comparison destinations? Maybe I'll ck some others like S or C America?