Indonesian carrier Sriwijaya Air has tentatively agreed to acquire up to 30 Embraer 190 regional jets, a deal disclosed during the Paris air show.
Embraer said the agreement - which is "subject to final documentation" - comprised the acquisition of 20 E-190s with purchase rights for another 10.
The airframer values the deal at $856 million at list prices but added that it could reach $1.28 billion if all rights for the aircraft are exercised.
Jakarta-based Sriwijaya Air will fit the aircraft with 100 seats in a single-class layout.
"The airline identified a need for a dedicated fleet of 100-seat aircraft to replace some of its narrowbodies and to achieve its expansion objectives," said Embraer.
These include adding new frequencies on domestic routes and opening new non-stop services.
Sriwijaya Air chief executive Chandra Lie said the airline chose the Brazilian-built jet "because it best fits our strategy of developing new non-stop markets that are not economically viable with larger aircraft".
He added: "The new aircraft type also lets us redeploy our bigger jets elsewhere in the network, where their size is more compatible with demand."
In addition to flights from Jakarta, Sriwijaya will use the aircraft for services from Balikpapan, Makassar, Surabaya and Medan.