I fouhd flights through Cheaptickets.com - we're paying 1355 from Edmonton, through Houston - one day each way - at the end of March. Hope this helps.

I first started to book thru cheaptickets, canadanna, but the "quoted price" went up by a few hundred dollars when I went to book. $1106 became $1400 plus.

Yikes, NS! I think it changes hourly, depending on sales and availability of seats. Our fare went up about $50 overnight, so we decided to book it quickly.