Iberia has launched a new Avios promotion for members of its Iberia Plus frequent flyer programme.

Customers booking flights before May 15 and travelling by December 31 will earn double Avios. The offer is valid on all flights operated by Iberia Group carriers, including Iberia Express and Air Nostrum services, but not on codeshare flights.

Note that Iberia Plus members who have held an account for at least 90 days, are able to combine their Avios with those held in the British Airways Executive Club scheme.

This is also currently the case with transfers to the Avios Travel Rewards Programme, although this scheme is set to close later this year.