Thanks for the tips, ThunderRoad. I'll definitely keep checking the website, and expertflyer sounds interesting.

I was a NW flyer before the merger with DL, but switched to UA when I needed more non-stops and for the E+. I'm just a little bummed, because while lots of people complained about the old UA (for various reasons), it worked very well for me out of Denver and I was always treated great. Flying 35k-45k miles/year, I'm not a big revenue customer, but a steady enough flyer that I appreciated the main E+ benefit. Now, it will be a lot more Frontier for me, and I'll fly whoever is cheapest (or timeliest) internationally.