Jetstar Asia has applied for rights to fly between Singapore and Tokyo's Haneda Airport, which will handle international flights in October 2010.
The carrier has applied to Singapore's Air Traffic Rights Committee to do so, and this is under review, says Jetstar.
Jetstar Asia, which uses A320s, will lease two A330-200 planes for the new service.
Jetstar's Australian operations has six A330-200s, which are used on all long haul services from Australia. "Additional services from markets like Singapore will always need to be served by additional aircraft," says a Jetstar spokeswoman, who adds that it would be "premature" to comment on when the leased aircraft will arrive.