Atlanta-based Delta Air Lines plans to hire at least 1,800 flight attendants as it plans for growth.

The airline began taking applications for the flight attendant positions this week, after opening it up to internal candidates last week.

“We anticipate 2015 to be another big year for flight attendant hiring and pilot hiring due to our expected growth,” said Delta chief executive Richard Anderson in a message to employees this week.

During one round of flight attendant hiring in recent years, Delta received more than 100,000 applications.

“I wouldn’t be surprised if we see at least that level of interest this time,” Anderson said. Delta employees can make referrals for job candidates.