And FT's frontpage article reports nonsense (not for the first time).
According to
the article the passenger bought a ticket from Oslo to Seattle via Frankfurt and did not fly the transatlantic leg of the trip. This is nonsense. The article the author cited correctly (I assume) states like all other articles on this topic that the passengers did not board the last leg (FRA-OSL) on the return trip.
Also the author used a wrong airport code for Oslo.