In the Yemeni capital Sanaa, continuing airstrikes have caused huge damage, and forced shops to close and people to flee their homes. 

Meanwhile, the United Nations said, as of mid-May, more than 500,000 people have been displaced as a result of the conflict that has been raging in the country since late-March. 

Sanaa residents are lining up to escape their homes, surrounded by the continuing violence—forced to pay US$300 in advance when booking a flight ticket. And even then, it is difficult to get one.

"It's really hard to get a ticket, as there are too many people. In addition, staff at the airport continually change the times. Initially, they informed me to come here on Wednesday, then all of a sudden, they told us to come here on Monday. I almost failed to book a ticket," said a resident of Sanaa.

Airstrikes by nations led by Saudi-Arabia have deteriorated the security situation in Yemen, making many local civilians desperate to leave the country.

Saudi Arabia has cut all commercial flights to and from Yemen. Only a small number of transport aircraft, transporting relief materials, and some special planes for UN staff, have been allowed to take off and land in the country.

Earlier this month, 10 civilian aircraft were permitted to fly to neighboring countries, such as Egypt and Jordan.

"Some people, such as patients, are in a difficult situation now. Hospitals in Yemen cannot offer them medical treatment, so they need to go abroad for treatment. The flights could take them to Jordan. Negotiations with the forces led by Saudi Arabia lasted a long time before permission was given," said Ali Al-Mutawakkil, airline manager.

But Al-Mutawakki said the flights are just temporary and they will be checked strictly by Saudi Arabia before taking off. The resumption of regular flights remains difficult.

"Thank God, I got the tickets. I think I'll never come back. Yes, never," said a local resident.

And now, all tickets on the limited flights have been sold out.