InterJet — a Mexican low-cost airline. It makes both domestic and international flights to the Caribbeans and Central, North, and South America.
Azul Brazilian Airlines — a cheap Brazilian airline with flights all over the world — distant travels are still quite pricey, though. However, there are regular cheap flights from Portugal and Spain to Latin America.
LATAM — one of the largest airlines in South America, based in Chile with flights over Latin America, Australia and Oceania, the USA, and Europe. Also, it’s the only air carrier that makes flights to Easter Island.
Virgin Australia — a little bonus — an Australian low-cost airline. It was founded by an English businessman named Richard Branson, and it arranges flights all over the world.