Always fly BA to / from Finland (in fact most of Europe) especially as I travel mainly hand baggage, as BA allow you 23kg. 1 gm over 8kg Finnair will make you place it in the hold.
BA Staff always friendly and willing to assist, and if it all goes wrong they do try to sort thing out.
Oh for the good old days with wine and food included, now its M&S!!
Just book another Helsinki trip in Oct - £83 rtn and at good times.