Southwest Airlines unveiled its new flight schedule through June 2014 which includes its new services out of New York's LaGuardia airport.
The Dallas-based carrier received 22 new take-off and landing slots at LaGuardia from American Airlines which was required to divest the slots as part of its antitrust settlement with the Justice Department to clear its merger with US Airways.
Starting May 11, Southwest said it will increase flights between Nashville, Houston Hobby, Chicago Midway and Akron-Canton, Ohio with the new slots.
But with the new flight service comes the elimination of other flights in its network.
Southwest said it will permanently discontinue 17 nonstop round trip markets, half of those from its Branson, Key West and Jackson airports. The airline had previously announced it was shutting down operations at those airports.
Also gone is the nonstop service between Harlingen and San Antonio which the airline started flying in 1975.
"This elimination is difficult, but necessary given current market conditions," the company said in a blog post on Monday.