This sounds like a bad idea as commercial air travel is an area where Federal jurisdiction comes into play, and it's still illegal under Federal law:

“Marijuana is illegal under federal law, and federal law governs airplane travel in this country,” he says.

The airspace you’ll be traveling through is considered federal territory; hence, why it can’t come on your flight. That includes flying within states where pot use is legal, or flying between states — even if both allow it for recreation. If you leave a state with marijuana, “you’ve broken the law of the state that you purchased it in, you’ve broken the law of the state that you’re going into, and you’ve broken federal law,” Mishkin says.

Still congratulations on your move out of Washington. I hope to also be a "former Washingtonian" in the near future, though I haven't yet figured out where my new home will be.