Jetstar is ramping up its low fare domestic services by adding more than 44 extra return flights a week.

By April, Jetstar will offer over 12,000 extra seats a week for travel between Melbourne and destinations including Cairns, Perth, Sydney, Adelaide, the Gold Coast, Brisbane and Launceston.

In addition, Jetstar will introduce a 12th daily Sydney-Gold Coast service and an extra three weekly Adelaide-Perth services, for a total of up to 15,800 extra domestic seats a week.

The new routes will be made possible by the arrival of new Airbus A320 aircraft - one to be based in Victoria, the other at the Gold Coast.

Jetstar Group CEO Bruce Buchanan said the additional capacity was part of the airline's commitment to affordable domestic and overseas travel choice.

"Jetstar is now the largest low cost carrier in the Asia Pacific region, which gives us the scale we need to offer people affordable travel options across our network and support local tourism."

Jetstar Australia & New Zealand CEO, David Hall, said consumer demand for budget travel remained strong, especially at the right price points.

"This extra capacity is great news for travellers wanting to visit Victoria from other states, as well as the Australian tourism industry generally."

Melbourne-Sydney travel will be boosted by two extra daily return flights, while an extra three flights a week to Launceston, in addition to the record capacity Jetstar is currently running into Hobart.

Holidaymakers will be offered more flights to Queensland, including four new return services to each of the Gold Coast, Brisbane and Cairns. Return flights to Adelaide and Perth services will be increased by three a week.

The ramping up of domestic services sits alongside Jetstar's recent increase of international flights during the peak summer period.