July 17 to August 1 from Calgary to Glasgow, Scotland has dropped to $699 roundtrip after taxes on Air Transat.
Flights to San Juan, Puerto Rico (SJU) are a fair bit cheaper than usual at the moment ($430 roundtrip after taxes) between August and mid December.
http://www.google.com/flights/#searc...0;r=2012-08-30
Lima, Peru (LIM) is down into the $700s...
http://www.google.com/flights/#searc...0;r=2012-08-30
and Bogota, Colombia (BOG) is down into the $600s...
http://www.google.com/flights/#searc...0;r=2012-08-30