SAS flights to and from Dublin are among those threatened after management at the group last night rejected offers from unions representing cabin crew and pilots during talks aimed at finding a way to save the Nordic airline.
Airline management have ordered all aircraft outside Scandinavia to be refuelled and ready to return to base immediately, and crews on all outbound flights told to carry enough cash to meet expenses, SAS spokesman Mikkel Thrane said.
The airline flies to destinations including Copenhagen and Stockholm from Dublin.
SAS, unprofitable on an annual basis since 2007, plans to cut office jobs and sell assets, including a ground-handling unit and Norwegian brand Wideroe.
Banks reached an agreement last week on increasing SAS's credit lines and extending them until March 2015. The agreement is contingent on unions approving the latest cost-cutting measures.
Credit providers "won't support" SAS unless it demonstrates it can make a profit.
The cutbacks at SAS are part of an industry-wide reorganisation in Europe.