The plane, carrying 189 people, crashed soon after taking off from Jakarta, the Indonesian capital, on Monday.
It plummeted into the Java Sea - no survivors have been found, nor has the body of the Boeing 737.
There is as yet no indication of what caused the crash, though there are reports the aircraft had experienced technical problems on earlier flights.
The plane was making a one-hour journey to the western city of Pangkal Pinang when it went down.
The pilot had asked air traffic control for permission to turn back to the airport, but then contact was lost.