I pack very light when I travel. I no longer check bags, and I have never had to do without. I do, however, travel with a lot of ritual gear. When I saw that there are no shopping areas near the Desert Magic Festival this year and the point after that is "bring offerings!" I started to think about this again.
You can bring one book of "safety" matches on a plane. I didn't find anything (outside the general restrictions on liquids) on the TSA pages about highly flammable liquids (whisky and everclear, anyone?), candles, or other things of that nature. In general, I presume that makes it "okay."
Then again, I have found a new tin for my portable altars, which might just wow the TSA into submission, if they're of the correct generation.
It becomes more complicated, too. While I will (thankfully) be on the ground at sunset on May 8 (that was planned, right druidkirk?), I won't have any way to light a fire, which just makes things ever more inconvenient. Add to this that I will be in the air at sunset on May 12, and I just sort of look at it and sigh. They really frown on open flames on planes.
Stay tuned to your local news about the freak accident involving a strip-search of a fire priest by the TSA and strike-anywhere matches.