Always wanted to CTB in Grand Canyon or Zion national park, been in the area of both several times, too bad I can't really bring SN on a plane.
Definitely the ultimate place for the final escapade. Somewhere scenic where you can die in view of the beauty of nature in lieu of a boring depressing Hotel room, without any anxiety or probability fearing being found as there won't be a soul around within a 20 mile radius to find you in time let alone ramp an ambulance down the Grand Canyon, and enjoy your last sunset or sunrise instead of being in a dark closet or depressing confined space!
You can bring SN on a plane. Put it in a jar of some powder workout supplement or magnesium or fiber supplement jar. Lots of options if you go to the vitamin shoppe for sure. Pack it in your checked luggage. I'm looking at my cupboard right now and I see a dozen options for candidate containers. I'm opening my cupboards and just having a cursory glance now and I see massive jars of collagen peptide powder, bags of supplements from bulksupplements.com agmatine, arginine and a bunch of powdered amino acids. Hell I even have a 1 pound container of powdered Gatorade!
For domestic flights TSA's primary and only objective is passenger and flight risk security. They have proven to have done a horrible job already in penetration tests were hundreds of guns, knives and other lethal objects including explosives have passed through in secret audits without issue. You think TSA cares about powdered Gatorade or Insotinol supplement powder you bought from the Vitamin Shoppe you have in your checked luggage? They're under fire and pressure now playing catch up after hundreds of fake explosive devices have have passed through the scanners and security in audit tests. The last thing in this world they're going to care about right now is a powdered supplement, and that's not even within the TSA's mandate. It's like the Postal Service doing IRS audits, the TSA's job is detection of flight security risks not detection of powdered supplements, and even if so it would fall outside of their jurisdiction and scope of their mission. Only international flights involve the additional scrutiny in screening for contraband smuggling.
Even so, SN is not a controlled or regulated chemical by any means. What's the difference if you bring sodium nitrate or sodium nitrite? Or sodium chloride?
Even so, you could always get a cheap hotel somewhere in your destination and just mail the SN via first class snail mail before your flight to the hotel, or just order it from the hotel Express once you arrive.
As a very last resort if you find it absolutely necessary, you could always rent a car and just take a final one-way road trip drive. I would go the train route just because it's more scenic. Why not Catch a Bus there!
So many options and beautiful scenic places to die. May as well make your last site a pleasant and peaceful one.
I am going to CTB by the ocean near an abandoned and haunted lighthouse, where I could see my last sunset by the ocean. I lived for the sea, will die by the sea.
There are beautiful tropical islands and beaches in the Florida keys, wide open deserts, snowy white fluffy cozy Christmas scenic mountains in hilltops up north or even Arctic Alaska, beautiful and peaceful grasslands full of flowers roses and daisies a top cozy hilltops, interesting cave top waterfalls.
What are some other candidate scenic settings?