Best I could find is $1125 before taxes and fees, but thats out of NYC. Probably the best airport to fly out of driving from Montreal.
AeroSvit


Turkish Airlines will also do $1295 before taxes and shit it seems too.


Call this number: (800) 313-1963
And use this reference code: 52-33-79-6

Departure city: New York, NY

Destination city: Karachi [PK]

Departure Date: 01 Nov 2008

Return Date: 20 Nov 2008