I doubt it.
For Chicago-Montreal there were just $39 in taxes, less than the $45 AA charges.
Well, I called yesterday, and since I don't have a account with Lan, I had to pull tooth and nail, to have the guy look up sample dates in March, and he seemed quite confident that the tax is always around $60. Since you do have an account would you mind giving them sample dates and finding out. After giving up over 10k starwood points, that you can easily get $200 for, I find a additional $60, not quite worth it. Thanks