Southwest Airlines has created a huge amount of buzz among low-fare junkies this morning with the announcement of a two-day sale where all tickets cost either $30, $60 or $90 one-way.

As the Dallas Morning News‘ aviation blog puts it:

Southwest calls it “one of the biggest fare sales in the company’s history.”

Rick Seaney of FareCompare.com called it “one of the most unusual system-wide airfare sales we have tracked in [the] past five years.”

“For those who have been waiting for the cheapest fare sale of the year, I can’t think of anything better,” said Tom Parsons of BestFares.com.

The sale is simple — flights up to 400 miles are $30 each way; up to 750 miles is $60, and over that is $90. The low prices aren’t available on Friday or Saturday.

The other caveat : The sale ends tomorrow.

Flights have to be between September 9 — November 18, 2009.

So get clicking, fools.

This article appears in Jul 2-8, 2009.