TAP Portugal has lofty expansion goals, including increasing their footprint in North America. Over the summer TAP launched flights from Lisbon to Boston and New York JFK. However, they have a limited longhaul fleet as of now, so the airline leased two planes from Brazilian carrier AZUL to operate the new routes.
TAP’s own planes feature angled business class seats, which are less than ideal for transatlantic flights.
However, one of the good things about these flights operated by AZUL planes is that they feature fully flat, staggered business class seats, which are a huge improvement over TAP’s own product. The problem is that TAP has been swapping planes last minute all the time, so there’s no way to reliably book flights operated by AZUL planes, even if they have their “usual” routes.