Bought 2 n/s tickets to LAS last week for 9/11, $550 all in. On WN. The same 2 tickets on CO? $900. Ouch. I haven't flown WN for years. Normally, even if CO was a few bucks more, I chose CO (I live downtown, so airport location not deciding factor). I chose CO for OnePass loyalty. But not this time for $350 savings on a 1222-mile trip.