Had another thought, and the amount of BTC would also matter, but what about a trusted friend / relative.
Before the flight send the BTC / other crypto to a trusted person.
Remove all BTC / crypto apps from phone. (you do have a backup right???)
That goes against everything Bitcoin stands for: self-custody, be your own bank, "trust, don't verify", everything!
After flight contact trusted person and have them send it to the new address that you just generated with the wallet you just reinstalled.
And this is how you lose your money through a man in the middle attack.
I would send multiple emails to multiple email accounts that I control
in each email i would have two or three of the seed words.
~
certainly not perfectly safe.
There are so many ways this can go wrong.