Website:Book directly on the Merpati Nusantara website
Wikipedia:See Merpati Nusantara's Wikipedia page

Do not ever choose to fly with this airlines even though they offer a real cheap price! Trust me, this is the worst airlines ever! They changed my flight time like 4 times and the last change, they did not even inform me! When i complained, they did not response well and even hung up the phone!
I decided to just take a full refund of it, so I sent them a request by email. They never replied it!
I went straight away to the office head to take the full refund, the service really sucks! They made me waiting and waiting!
Verify delays online: Usually, if one low-cost flight is late, it causes all the subsequent flights made with that particular airplane to be delayed. This is due to the fact that low-cost airlines prefer to have short waiting times (between 25 minutes and 2 hours) between flights. So if the flight before yours is late, your flight may even have a 1 or 2-hour delay. You can check the estimated departure/arrival time online, either on the website of the airport (for most airports) or on the website of the airline (for all major airlines).