@avs It may or may not be. You need to search the actual sources of the fuel and the actual additionality of the action. Does Finnair provide enough information for such an assessment? I know Viking Line doesn't (though I paid the "sustainable" fuel surcharge anyway just for fun).
So what was the additional surcharge you paid for the SAF? I've just tried to look for it and I can't find such an option. #Finnair says 0,2 € for HEL-BRU. This is just the mandatory minimum #SAF share. Greenwashing.