Why would you check your cutter? Cutters are allowed as a carry on.
http://www.tsa.gov/assets/pdf/prohib...s_10-24-07.pdf
For the hassle of shipping a lighter (which can be lost-after all, this is the USPS we're talking about), why not stop in a convenience store gas station and pick up a $5 or less torch lighter and leave the nice one at home?