Delta said this week it has seen a 25%-30% decline in bookings.
It plans to reduce domestic flights by 10%-15%, with reductions focused on markets with frequent flights.
With the World Health Organization declaring the coronavirus crisis a global pandemic, Delta said it "has and will continue to quickly make adjustments to service, if needed, in response to government travel directives and where our customers tell us they want to fly."
Hartsfield-Jackson general manager John Selden said traffic has declined significantly at the world's busiest airport. On Tuesday, for example, roughly 46,000 passengers went through security checkpoints at the airport, down from 63,000 a year ago, he said. That's a decline of nearly 27%.
Selden said Atlanta airport concessionaires have seen a 15% decline in foot traffic.
Delta international flight cuts from Atlanta
- Service between Atlanta and Brussels reduced from five times weekly to four times weekly starting March 29 through May 20.
- A second daily service between Atlanta and Paris-Charles De Gaulle reduced from daily to four times weekly starting March 18 through April 30.
- Daily service between Atlanta and Munich reduced to five times weekly starting March 18 through May 20.
- Daily service between Atlanta to Dusseldorf reduced to five times weekly starting March 23 through May 20.
- Daily service between Atlanta and New York-JFK to Rome suspended starting March 11 through April 30.
- A second seasonal service between Atlanta and Rome postponed from May 1 to May 21.
- Daily service between Atlanta and Madrid reduced to five times weekly starting in April through May 20.
- Previously announced suspension of all U.S. to China flying extended through May 31.
- Extension of five times weekly between Atlanta and Tokyo.
- Suspension of service between Atlanta and Seoul Incheon.
For details on international flight cuts from cities other than Atlanta, see Delta's list of reductions for trans-Atlantic and trans-Pacific flights.