Is a traveler permitted to complete fasting until the Maghrib Adhan in his home country if his plane departs before Iftar in Ramadan, and when is he entitled to break his fast?

A fasting person is permitted to break their fast if they travel during the day in Ramadan, and they are not obligated to complete the fast. Completing it is better if they are able. Breaking the fast is not permissible until after one has commenced the journey. If she wishes to complete the fast, she should not break it until the sun sets while on the plane.