It's cheaper than you think to fly to Minneapolis! Here are some hints for how to find the best airfare:

Minneapolis is a hub airport for Northwest Airlines. See their current promotions here:
http://www.nwa.com/deals/index.html

Airfare.com has often got rock bottom ticket prices. Check it out here:
http://www.airfare.com

FareCompare will search lots of different engines to allow you to compare lowest-fare pricing:
http://www.farecompare.com

Airfare Watchdog tracks low airfares. Sign up for their email alerts to be notified of the best fares between your city and MSP:
http://airfarewatchdog.com
Today's deals to Minneapolis