American Airlines has placed a firm order for 15 additional Embraer E175s valued at $705 million at list prices.

The aircraft, to be delivered in 2020, will be operated by Irving, Texas-based Envoy Air, an American wholly owned regional subsidiary, under the American Eagle brand.

Dallas/Fort Worth-based American has been pulling more feeder flying back into the carrier’s regional subsidiaries—which also include Dayton, Ohio-based PSA Airlines and Salisbury, Maryland-based Piedmont Airlines—as contracts with partners ExpressJet Airlines and Trans States Airlines are set to expire in 2019.

The new aircraft will be configured with 76 seats: 12 in first class and 64 in economy.

Since 2013, American has ordered 104 E175s from the Brazilian manufacturer.

With this latest contract, Embraer said it has sold more than 435 E175s in North America since January 2013.

Jack Wittman, wittmanj@gmail.com