Blaming a global recession and weaker demand for air travel, Delta Air Lines said today it will make additional cuts to domestic and international seat capacity and trim more jobs next year.

Domestic capacity will be down 8 percent to 10 percent, and international capacity will fall 3 percent to 5 percent, compared with 2008, the airline said in a letter to employees.

Together, domestic and international capacity will be pared as much as 8 percent, the airline said. The cuts will be atop a 13 percent capacity reduction that Delta said last June it would implement by the end of this year.

"Once again, Delta must take the necessary steps to adjust our business and make certain seat capacity meets customer demand," the letter said, in a statement attributed to CEO Richard Anderson and President Ed Bastian.

The airline is analyzing the impact on Delta's 75,000 employees and will offer "voluntary programs" to reduce its payroll, the letter said. The impact on Salt Lake City International Airport, where Delta has its westernmost hub and employs about 3,900 people, wasn't immediately revealed.

Earlier this year, Delta shed 4,000 people from its payroll by offering optional severance packages.