(Reuters) - Delta Air Lines ( DAL ) said on Thursday it will pause its flights between New York-JFK and Tel Aviv through Dec. 31, due to escalating security concerns in the Middle East.

The airline said a travel waiver has been issued and urged customers to be prepared for possible adjustments to its Tel Aviv flight schedule, including additional cancellations on a rolling basis.

Concerns over a wider conflict in the Middle East have prompted international airlines to suspend flights to the region and avoid affected air spaces.