Silahkan dicoba, semoga membantu.
DELETE FROM departure, departure_time
USING departure
INNER JOIN departure_time
WHERE departure_date = '2016-09-30'
AND departure_time.id = departure.id
Atau
DELETE FROM departure, departure_time
USING departure
INNER JOIN departure_time
WHERE departure_date = '2016-09-30'
AND departure_time.departure_id = departure.id
Atau Anda dapat menggunakan ON DELETE CASCADE
yang akan bekerja secara otomatis untuk Anda.