Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Medan to Jerusalem as you normally would.
Medan Kuala Namu Intl (KNO) is the airport you will fly out of if you book a flight from Medan to Jerusalem. You should not have trouble finding flights to Jerusalem from Kuala Namu Intl; the airport handles an average of 0 outbound flights to Jerusalem per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Medan airport to Jerusalem. It is only a 23.8 km journey to Kuala Namu Intl (KNO) from Medan’s city centre.