For every three roundtrips on United, United Express or Ted flown between September 7, 2004 and January 31, 2005, United will give you a free coach domestic roundtrip ticket.

Tickets must cost a minimum of $250, and discount economy tickets can’t include a Saturday stay. Registration is required by November 30th.

The free tickets will be valid through June 10, 2005 for travel within the 48 contiguous US states (though residents of Hawaii and Alaska can fly from their home state to the US mainland). The free tickets are not upgradeable, require 14-day advance ticketing and a Saturday night stayover, and certain travel dates are blacked out. On the plus side, they are booked in “S or T class” meaning deeply discounted coach rather than coming out of award inventory.

Hey, I won’t want to fly on one of these free coach tickets but they make for a perfect giveaway or stocking stuffer!

And it wouldn’t surprise me if other airlines matched the offer shortly.