If Bitcoin is prohibited, and you have them and you have to change them in the country for Fiat, it is possible to find a person in another country and sell it Bitcoins. Or use the exchanger, the main thing that the bank will not start to wonder where this money.
I don't think doing a trip over a country just to trade a Bitcoin is a good choice unless you're dealing with millions of Bitcoin. Just do P2P on a good platform or find a trusted member from this forum to exchange your fiat with. If you don't want to use a bank account then use services such as Advcash, etc.