El Al's parent company Knafaim-Arkia Holdings petitioned the High Court on Sunday to overturn the decision made by Tourism Minister Avraham Hirchson, to grant Israir scheduled flights to New York.
The petition follows El Al's appeal last week for court intervention over the decision.
The companies have asked the court to "prevent a violation of the obligations made by the government before the privatization of El Al." The government undertook not to introduce local competition on a route until passenger travel to Israel hit the 10.7 million mark, which it has not yet done. The court, which said it will hear El Al's case before February 16, and has yet to respond to Knafaim's petition.