When you choose to leave the sure path of God's will you begin a long downward trail that leads to disaster. He went farther down when he called for her. He went deeper yet when he went into adultery. He went farther down when he had her husband Uriah killed. Down, Down, Down into sin.
Sin is costly.
Jonah paid the ticket. The voyage often took 6 months or even longer. It probably took all the money he had. Sin is like that. We pay our own way when we flee from God.