If your departure flight does not originate on the East Coast, specifically, Atlanta, Philadelphia, Newark, New York or Boston, it is likely that you will have a layover at a US airport.
Unless your group has a designated extension (e.g. Egypt, Turkey, Greece, Rome, England, or possibly Jordan), Discipleship Travel LLC uses non-stop transatlantic flights only. This means the flight from one of the gateway cities listed above to Israel and back will be direct with no stops. This leg of your flight will be approximately 9-12 hours, depending on your specific city of departure and the direction you are flying.