Originally Posted by patwoz
I think it now takes 8...thanks for your replies
If you book online you get an extra credit, for a total of 3 credits per round trip. 16/3 = 5.33, or 6 round trips for a free ticket. Add in 1/2 credit for rental car and/or hotel stays and you can easily get a free trip after 4 or 5 trips. I earn 2 free southwest tickets a year just on car rentals and hotel stays.