He run out of luck too. Today he was supposed to visit the Borobudur and Prambanan temples around Yokyakarta. They just shut them down. But that's details. He is running out of options for flights back home. One after the other companies stop international flights. He just grabbed the first ticket he fount (Wednesday the 18th) for Greece.All the Best to your friend.
Obviously he has to cancel the LoB too. I don't know how they'll handle his case.