MONTREAL -- Bombardier's (BBDb.TO) stock price hit a nearly five-year high Wednesday following news it had signed a regional aircraft deal with Delta Air Lines Inc (DAL.N).

The Montreal-based manufacturer's shares closed at $5.33, up 28 cents or 5.54 per cent to reach a level not seen since October 2013.

The company said Delta will buy 20 CRJ900 regional jets and become the launch customer for its regional aircraft's new cabin design.

Bombardier's new Atmosphere cabin features larger overhead bins and washrooms along with mood lighting and increased cabin connectivity options.

The Atlanta-based airline will take delivery of the dual-class aircraft with 70 seats in late 2018, replacing older aircraft models.

The planes will fly under the Delta Connection brand.

Delta has a fleet of more than 450 regional aircraft, including 151 CRJ900s operated under several Delta Connection carriers.

The order has a list price totalling about US$961 million, but airlines typically receive large discounts.

It is the second order for the new CRJ900 cabin in about a month. American Airlines ordered 15 of the regional jets and has options for 15 more planes.

The first aircraft are expected to be delivered starting in the second quarter of 2019.