American Airlines, blaming the one-two punch of record oil prices followed by deep recession, announced two major initiatives -- $2.9 billion in new financing and network adjustments of eliminating unprofitable routes and allocating those planes to its four major hubs an Los Angeles, starting next summer.

JetBlue Airways and Lufthansa have signed a codeshare agreement under which JetBlue would be allowed to place the Lufthansa code (LH) on JetBlue flights. Initially, the airlines plan to offer connecting service between 12 JetBlue destinations in the U.S. and Puerto Rico and Lufthansa’s network of 180 destinations in Europe, the Middle East, Africa and Asia. The agreement was filed for authorization from the U.S. Department of Transportation (DOT).

Beginning Thursday, Dec. 17, visitors to Key West can take advantage of AirTran Airways’ nonstop jet service between Orlando and the island city. The AirTran flights, to be offered four times per week, will inaugurate the first scheduled service to Key West by a major low-cost carrier.

AirTran Airways has released schedules for new service to Aruba. These flights will mark the airline’s fifth Caribbean destination and are in addition to recently announced service to Montego Bay, Jamaica, and Nassau, Bahamas and existing service to Cancun, Mexico, and San Juan, Puerto Rico.

United matched competitors by implementing a $50 fee for a second checked bag on flights between the U.S. and Europe.

Delta Air Lines said that it will resume its codeshare agreement with Colombian carrier Avianca effective Sept. 7. The Delta-Avianca codeshare agreement will offer customers increased connectivity and coverage options, shorter connection times between destinations within each country, and coverage of multiple legs with one ticket.