Jetstar and Melbourne Airport have advised that from November 10, 2015, Jetstar will be moving its domestic operations to Melbourne Terminal 4. At present, Jetstar largely operates out of Terminal 1, which it shares with big brother Qantas.
Note that this change only affects domestic operations. All international flights, and any domestic segment of an international flight, will continue to operated from Terminal 2. These flights can be identified through their flight number, and are the flights numbered from JQ1 through to JQ241 At the time of writing, the specific international flights that will not be moving are JQ15 Melbourne-Cairns, JQ27 Melbourne-Sydney and JQ28 Sydney-Melbourne flights, which will remain at Terminal 2.
The move to Terminal 4, is part of the staged opening of the new terminal, with Tiger Airways having moved its operations there on 18 August. The new terminal itself is located to the south of the existing Terminal 3, which houses the operations of Virgin Australia.
Qantas Club Access
While access to the Qantas Club will remain for eligible passengers, it needs to be noted that the loung will remain in Terminal 1, with the domestic operations of Qantas. It is approximately a 10-15 minute walk between the two terminals. Jetstar and Qantas have also advised that there will be no boarding announcements made in the Qantas Club. In addition the display monitors in the lounge will not include any Jetstar flight information.
Jetstar have set up a dedicated page describing the changes.