This Northwest Airlines, PK223, give you $50 off of fare that is at least $100, before taxes and fees.
This E-cert works for Roundtrip fare ONLY fare.
Qualifying tickets must be issued by June 30, 2009.
Travel must be complete by June 30, 2009
This E-Cert entitles one passenger to a $50 discount on qualifying published fares of $100 USD* [...]