A number of years ago I flew Iberia to Havana, Cuba. As a Canadian there is no issue in doing that.

I am interested in going again. BA shows no flights to Cuba, but they show up using a Matrix search - but those flights are on Finnair (out of HEL) and Iberia (MAD) metal. I did find plenty of IB flights to Havana, out of MAD.

Why does Finnair and IB fly to Cuba, but BA does not? Are UK citizens barred - like US citizens are - or is there another reason? Thanks for any info.