I might try this, but the last time I used miles on AV, I was charged $328 for taxes on BOG-JFK-BOG. I know the taxes are a little higher from CO out. Most of the taxes are probably the set fees, BOG facilities, Customs, Plant inspection, and 911 fees and JFK fees. I am wondering if any of the fees bump with the J. I think the taxes would be about 70 less if it was a JFK-BOG-JFK run. right?