Compass Airlines and the Association of Flight Attendants-CWA (AFA) reached a tentative labour agreement on 28 March.
The nearly 450 flight attendants will vote on the new contract from 10 April to 1 May. The US National Mediation Board mediated the negotiations.
"This is a good first contract and a good first step in recognising the substantial contributions flight attendants provide for the Delta network," says Catriona Bagley, president of AFA at Compass, in a statement. "We will be working hard over the ratification period to get flight attendants all of the information they need to cast an informed vote for our future."
Compass flight attendants requested a 30-day cooling off period in December 2012 after voting to strike that October. The airline and the union have been in negotiations since 2009.
Trans States subsidiary Compass did not respond by press time.