Can I use Avios or a flight gift card to pay for extra baggage or a seat?
You can use your Avios to pay for additional baggage or a seat for Finnair flights (flights operated with Finnair aircraft and with flight number starting with “AY" on the ticket) when booking your flights on our website or later via Manage booking.
Unfortunately, it is not currently possible to use a gift card to pay for extra baggage charges or seat reservations.
See Finnair charges for extra baggage.