Delta Air Lines, continuing its battle against JetBlue and American Airlines for business travelers headed to and from Boston, is adding four new nonstop routes from Logan International Airport in 2019.

The Atlanta-based carrier said Monday that it plans to begin daily service between Boston and Chicago O'Hare; Newark, New Jersey; Washington, D.C. (Reagan) and Cleveland, Ohio.

The Cleveland flights debut April 1, the others on Sept. 9. The new flights will be flown on 76-seat Embraer 175 aircraft, with 12 first class seats, 20 Delta Comfort Plus seats and 44 seats in the main cabin.

With the addition of Chicago, Newark and Washington, the airline will now serve the top five business markets in the country, Delta President Glen Hauenstein said in a statement. The airline already offers nonstop flights between Boston and Los Angeles and San Francisco.

Delta's plans for the new routes:

Boston to Washington, D.C.: 6 daily nonstop flights

Boston to Chicago: 5 daily nonstop flights

Boston to Newark: 4 daily nonstop flights

Boston to Cleveland: 3 daily nonstop flights

The airline will have plenty of competition in its new markets. JetBlue, American and United already offer nonstop service between Boston and Chicago, for example, and JetBlue and United offer nonstop flights between Boston and Newark.