Update: Some offers mentioned below are no longer available. View the current offers here.You can fly roundtrip from several cities in the United States to Rio de Janeiro or Sao Paulo, Brazil in American or Delta Business class for about $1550. While, not as cheap as the Business Class Washington Dulles- Beijing $462 R/T , these are certainly still cheap prices and it seems like both airlines are hoping to gain control of these markets.Basically, Delta is offering cheap fares from American hubs and American is offering cheap fares from Delta hubs, making the real winner you! American departure cities include Delta hubs of Atlanta, Detroit, and Minneapolis, whereas Delta departure cities include American hubs of Dallas, Los Angeles, Miami, Philadelphia, and Phoenix.The best way to search for dates is to head over to Google Flights where you can get a calendar view of the available dates.As an example, you can head from Detroit to Sao Paulo on American for $1,534 round-trip.Fly from Detroit to Sao Paulo on American for $1,543 r/t in Business Class.If you’re wondering about upgrades with American, since this is booked into business class, if you’re an American Executive Platinum member, you could use your systemwide upgrades to upgrade to First Class. As a reminder, American Airlines is also offering a bonus on purchased premium fares in 2015, which these fares would qualify for.Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.The tickets require a 21 advance purchase with a Tuesday-Saturday departure and return of Saturday-Wednesday, with a minimum of a seven days at the destination. These appear to be around for most of the summer and throughout 2015.You can also score cheap Business Class flights to Rio de Janeiro.If you’re looking to earn even more miles, pay by using a card that maximizes airfare purchases, like 3x on airfare with the American Express Premier Rewards Gold or 2x on the Chase Sapphire Preferred. Check out this post for more on maximizing airfare purchases.Be sure to report back if you have any successes on booking these flights!Hat Tip: View from the Wing[card card-name=‘Citi® / AAdvantage® Platinum Select® MasterCard®’ card-id=‘22144516’ type=‘javascript’ bullet-id=‘1’]