SW has fares as low as $94 o/w January & February then $111 March into August. Of course there are restrictions but I would book now and not look back. EWR, BWI & RIC were not as competitive. Though I don't fly out of BWI as it is not my home airport it might be time to look at cobbling a trip to LAS through BWI. As usual good luck and let me know if you snag one of these fantastic fares. Lets start booking !