Southwest Airlines will next March launch twice-daily service to Newark Liberty International Airport. It's the third time this summer the carrier has added flights from BNA to the Northeast.

Southwest has only 18 daily flights out of Newark Liberty International, and two of them will leave for Nashville. United Express also offers daily flights between Nashville and Newark, but the two cities haven’t been linked by large jet service since 2005.

You are now free to fly to LaGuardia. Early next year, Southwest will cut its flights from the New York area's No. 3 airport to Baltimore and add nonstop connections to Nashville International Airport.

Southwest Airlines will offer one daily nonstop flight from Nashville International Airport to Boston’s Logan International Airport, beginning Aug. 12.

The addition of the flight targets a high-demand market for business travelers, BNA officials said.

“We are excited to add Boston to our nonstop markets,” Raul Regalado, president and CEO of the Metropolitan Nashville Airport Authority, said in a release. “Boston is the largest market with no nonstop service currently from BNA. The community asked for this service, and we worked hard with our strategic partners to make it a reality.”

To mark the new route, Southwest announced a fare sale of $139 one-way between the two cities when purchased by May 11.

Nashville International Airport is served by 10 airlines and offers 370 daily arriving and departing flights. Nashville International provides nonstop air service to 52 markets. 

Local architecture and engineering firm Gresham Smith and Partners has been selected by Southwest Airlines and Los Angeles International Airport officials to study renovation options for LAX's Terminal 1, which was expanded to handle the 1984 Olympics. Gresham, which has played a big part in the overhaul of Nashville International Airport during the past decade, is currently working on about 20 airport projects around the country.

Southwest Airlines, the dominant carrier at Nashville International Airport, has canceled about 100 flights today as it continues to pull dozens of its Boeing jets out of service so federal officials can inspect their fuselages for cracks. The airline's schedule is expected to be back on track by the middle of the week.

Southwest Airlines will add flights to three cities as part of its seasonal fall schedule. Starting Oct. 1 and continuing through Nov. 4, the airline will add one additional flight between Nashville International Airport and Baltimore/Washington, New Orleans and Providence.

For more on Southwest and its local scheduling adjustments, click here.

Shareholders of AirTran Airways have voted to sell to Southwest Airlines for $1.4 billion, giving Southwest a foothold in Atlanta and routes to Mexico and the Caribbean. For more on the deal, see BusinessWeek's coverage here.

Southwest is the largest carrier at Nashville International Airport.

Chicago (Midway) (MDW) – from 8 daily flights to 7 Baltimore (BWI) – from 7 to 6 Orlando (MCO) – from 5 to 4 New Orleans (MSY) – from 3 to 2 Phoenix (PHX) – from 3 to 2 San Diego (SAN) – from 2 to 1 Providence (PVD) – from 1 to 0