Forces loyal to Yemen’s exiled President Abd Rabbuh Mansour Hadi captured Aden international airport from the Iranian-backed Houthi rebels on Tuesday.
Yemeni forces loyal to President-in-exile Abd Rabbuh Mansur Hadi also took the district of Khormaksar.
Supported by air strikes from the Saudi-led Arab coalition, the anti-rebels launched heavy assaults on Aden this week to gain back territory under the control of the Iranian-backed Houthis.
"Aden International Airport and Khormaksar have been cleared of Houthi and Saleh elements by armed forces backing Yemen's legitimacy and the popular resistance forces, in coordination with and with direct support by the coalition," Yemeni government spokesperson Rajeh Badi said.
He said, they were anticipating Aden to be entirely cleared in the upcoming days.
"The fighting in Aden began in the morning as the forces approached Aden from different positions," Ali al Ahmadi said, spokesperson for the Southern Popular Resistance, which is defending Aden from the Houthis.
"After violent clashes that continued for hours the forces were able to enter the airport and Badr base and they killed a large number of the militias," he added.
A ceasefire brokered by the United Nations allowed the delivery of aid to the food and medicine deprived city, however on Monday Saudi-led air strikes continued ending the truce..
The World Health Organisation (WHO) said it managed to deliver some medical supplies to Aden, but food rations were delayed
US President Barack Obama and Saudi King Salman bin Abdulaziz al Saud discussed the conflict via telephone late on Tuesday night.
"The President and the King also spoke about the urgency of stopping the fighting in Yemen and the importance of ensuring that assistance can reach Yemenis on all sides of the conflict through international humanitarian channels," said a White House readout of the call.
Around 20 million Yemenis suffer from a lack of water and a million people have been displaced from their homes as a result of the armed conflict.
In the city of Aden alone, more than 858 Yemeni civilians were killed, including 259 children, and 6,879 others were wounded in the first 102 days of conflict.
More than 3,000 people, including 1,500 civilians, have been killed in the conflict since March, according to the UN.