Last night, Southwest reduced airfare on 56 destination going to and from Minneapolis, starting March 9, 2009. Look for this to set off a nice pricewar that will benefit travelers’ pocketbooks. For instance, their new one-way between Minneapolis and Chicago will be $69. Farecompare’s Rick Seaney predicts that the legacy airlines will react by slashing prices, adding flights, and possibly dropping those dread 2 night minimum stay round trip fares in favor of straight one-ways. Rick says he’ll be posting a total airfare schedule rundown later today on his blog, rickseaney.com.