Business Class upgrade availability check for EU flights
I am trying to find out, if it is possible to upgrade 2 flights for 3 people with avios, without calling the iberia hotline (they could not help - only told me to call a few days in advance). It is IB 3843 on the 18th of April from SPC to MAD and IB 3674 on the same day from MAD to BER.
Many thanks!