My data source is united.com.

I called MP customer service a few minutes ago to figure out what was going on. It turns out that the united.com group has inaccurate data (apparently), and I was told to e-mail them and ask them to update it.

Once they do this, my tool should pick up the new data. Until it's fixed, at least the numbers are more accurate than geographical calculations. I'll let you know when/if I hear back from them... thanks for letting me know of the inaccuracies!