>>1044696For the full trip? Unless you want to go full hobo mode, no.
Airfare will be in the 3-4k region at least even if you get all flights as super saver specials.
SEA about $25 per day (2250), Australia $50 per day (1500), South America $35 per day (2100) is what you need for hostel, mostly cook your own meals, no/tiny amounts of alcohol, non smoker, minimal public transport/taxi use and maybe going out every other week once.
so
3000
+2250
+1500
+2100
= 8850
add some other stuff you will need like:
a taxi, long train rides, travel insurance, visa fees, doing some crazy stuff, entrance fees, replacement of lost damaged gear/cloths you want about$100 per week.
A healthy reserve of at least $1500 cash for emergencies (just to get home if needed, get a passport replaced, if you get robbed not be fully fucked till your insurance sends some money, and banks can shut down in SEA and South America without notice, so you want cash)