Originally Posted by
newsmanhoss
I have done this exact thing with no problems at all. Find any fare within the Southwest system for $399.99 (I actually found one of these recently), and then, after it's ticketed, call Southwest to have them change it to the itinerary you actually want.
I just did this as well. Although, I was able to skip calling SW by (i) adding my RR # to the SW confirmation # online; and then (ii) viewing the confirmation # of an "existing reservation" not shown; and (iii) canceling. Took me 5-10 minutes before I figured that out. Now that you know, should take you 5.
Datapoints on hitting the $399.99: