I always start planning my December Vegas trip in early June. I love flying JetBlue for their nonstop flights BOS-LAS. I usually have plenty cc miles for free flights. This year they have hovered between 40k and 60k points. Cash price for tickets ranged between 600 to 950. I finally booked SW for $300 r/t with plane change both ways at Midway. Last night was able to book JetBlue n/s for 18k points plus $19 fees. I should say thanks Southwest for the $300 bank balance for a now planned Oct Florida trip.