Where will the 18 flights per day go to from Newark? Southwest likes to offer a number of convenient flights throughout the day to select destinations, so I'd imagine they would only serve 3 or perhaps 4 locations non-stop. From LaGuardia it's only to Baltimore and Chicago. AirTran adds Milwaukee, Akron, Indianapolis, Atlanta, Newport News, and Orlando to the LaGuardia mix. From Newark, however, there is no AirTran presence. Here's my guess for Newark as they provide many Southwest/AirTran connections and are popular destinations in their own right: Chicago, Atlanta, and Orlando up to 6 daily flights each...if there's a fourth destination I'd guess Baltimore (primarily for shorter Southwest connections on the east coast). Longer shots for a fourth destination might be Denver (partially to keep United on their toes and longer connections to the southwest and west) or St. Louis (to keep American on their toes and also longer connections).
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