Calgary to Buenos Aires, Argentina - $714 roundtrip after tax
There's apparently a flight to Buenos Aires, Argentina for $714 roundtrip after tax.
Try March 23 to April 4 on Kayak.com
and then click on the price, and and choose the result for Airfare.com
screenshot:
It's pretty rare to see fares much below $1100 from Canada at the moment.
Argentina is probably the most amazing country I've ever visited. It would be worth flying there just to see Iguazu Falls!