The low-cost carrier will launch the upgraded service from February 1.
Since starting flights between Perth and Singapore almost a year ago, Scoot has carried almost 150,000 on the service.
Chief Executive Officer, Campbell Wilson, also announced that Perth would be the inaugural destination for Scoot’s 787 Dreamliner from early 2015.
“The 787 us a game-changer for Scoot and will deliver better comfort, a wider selection of amenities – including on-board wifi – while enabling us to maintain great value airfares.
“Our increased frequency gives everyone a greater choice in visiting either Western Australia or Singapore any day of the week.
‘Furthermore, guests travelling from Perth can also enjoy an even greater choice of destinations and seamless connections beyond Singapore on either Scoot or our partner airline Tigerair”.