American Airlines is currently offering cheap flights to Rio de Janeiro and New York in one trip for just 492 EUR. Rio Carnival 2015 starts on Friday, February 13th and ends on February 17th.
Barcelona / Madrid – Carnaval in Rio de Janeiro – New York City – Barcelona / Madrid
How to book:
Visit American Airlines site and choose mutli city search and put every leg separately.
One cabin bag and one piece of checked in baggage per passenger.