The Houthi Ansarullah movement and forces loyal to fugitive former president Abd Rabbuh Mansur Hadi were still discussing a United Nations proposal on the contested port city of Hudaydah, a lifeline for millions of Yemenis facing starvation.
UN Secretary-General Antonio Guterres was due to attend the final day of talks in Sweden to support efforts to launch a political process that would end the nearly four-year-old Saudi war on the impoverished Arab country.
Another round of talks could be held in early 2019.
A UN spokeswoman said both parties had received a "final package" of agreements covering the status of Hudaydah and the Sana’a airport. "We hope to receive positive responses," she said, Reuters reported.
Houthi delegate Abdelmajid Hanash said international flights from and to Sana’a would stop in Aden and the airport in Sayun in the south, but the UN would oversee the safety procedures.
As part of confidence-building measures, both sides agreed to resume oil and gas exports to help shore up central bank coffers. Revenues would be used to pay salaries in all areas under the control of both sides, delegates from both sides said.