Book a flight to Buenos Aires.
Check the schedule for the ferry to Colonia del Sacramento, Uruguay. The ride takes under an hour and round trip fares are inexpensive. They even include a sandwich, which is more than you'll get on an airplane. With the U.S. dollar exchange rate currently equal to 19.23 Uruguay Peso's, round trip comes to about $40.
Arrive at the ferry station as early as possible. Remember to bring your passport.
Stroll through the cobblestone streets while you enjoy the cool ocean breezes.
Find a tourist office in Buenos Aires
Book an airfare/ hotel package. It's usually cheaper to book this package while in Buenos Aires than it is from the States. If you are on a tight budget, and don't mind long bus rides, you can take a sleeper bus from Buenos Aires.
Take a boat ride under the falls! The cost is $15. Worth every penny!
Eat at Bufalo Branco Churrascaria, which is considered to be one of the best places for churrasco, a grilled meat. Full dinners cost about $13 US per person.
Stay at the Continental Inn Hotel. rates are as low as $84 US!