Using BA’s own API data sources, he created a website that showed Avios availability across an entire year in one glance. – plug in your dates and it will tell where there are Avios seats. How the new Avios reward flight search worksIAG has, finally, introduced a native version of this search. Crucially, it is visible to all customers, regardless of whether you have a Companion Voucher sitting in your account or not. You can see Aer Lingus and Iberia availabilityThe real breakthrough for many people will be seeing Aer Lingus and Iberia reward availability.