Uh, guy they didn't ship 400 people (who couldn't fit in a C130 because you aren't going to pack them in like Sardines. The usual max passenger rate for a C-130 is 124). They shipped 16. Since you want to do math so bad...
So, the distance between Houston and Guatemala City is 2600 miles. The air speed of a C-130 (slower than a commercial jet) is 400 MPH. That means it takes 6 1/2 hours to get there. Also, 6 1/2 hours to get back. So, 13 hours operating at $26,000 an hour. So that little publicity stunt costs $338,000. Divide that by 16 passengers, that was $21,125 each.
That's not counting the expense of paying guards, having security, and whatever Trump had to pay the Guatemalan government to go along with this little charade.
But I'm sure it was worth it to you to wank off at the site of some brown people being deported.