ATL's current sale to Rio is available for $698.20 on Dec 3 returning on Dec 4's redeye. Gives you 8:10am - 10:55pm to enjoy the sites of Rio, too. Nets 9488 MQMs and doesn't require any connections. Europe should be easy, too, but I haven't researched it much to see how low it can go. Remember, too, that you can complete your qualification on other SkyTeam partners. Don't limit yourself to Delta -- especially if you're going for an International trip.