American Airlines parent AMR wants another six-week extension to submit a financial reorganisation plan to emerge from bankruptcy protection.
The Fort Worth-based carrier faces a 15 April deadline to submit a final proposal, but has now filed a motion asking to extend the deadline until 29 May. A hearing to consider AMR's motion is scheduled on 27 March.
AMR originally filed for bankruptcy on 31 November 2011. The process allows the carrier a 120-day period to exclusively file a restructuring plan, but the court has granted several requests to extend the deadline.
The carrier has already agreed to merge with US Airways after emerging from bankruptcy, and that deal is pending the result of anti-trust reviews.
AMR said the latest extension is necessary because of the complexity of planning the restructuring of a complex and global operation.