The U.N. aid coordinator called on the Saudi-led coalition to open all Yemen's seaports urgently on Tuesday, saying millions of lives were at risk.
Hedile noted the first flight carrying 218 passengers took off today.
There was global outcry last week when Saudi Arabia blockaded the country's ports after a missile was sacked towards its territory by the Houthi rebels.
On November 4 Saudi Arabia said it intercepted north or Riyadh is said was sacked from Yemen - blaming Iran for the incident, Saudi authorities accused Iran of "declaring war" on their country.
Aden, on the south coast of Aden, is the stronghold of the internationally recognised, Saudi-backed government of President Abdrabu Mansur Hadi.
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The conflict began in 2015 when the Houthis took over Yemen's capital of Sana'a and the Yemeni government.
The United Nations has warned a total blockade could cause starvation in Yemen, where war has killed at least 10,000 people in the last two and a half years.
The House of Representatives on Monday held its first ever debate over US military engagement in the civil war raging in Yemen and passed a non-binding resolution calling on parties to wage the conflict humanely and work toward bringing it to an end.
Saudi Arabia's ambassador to the UN Abdallah al-Mouallimi told reporters in NY on Monday that ports in government-controlled areas such as Aden, Mukalla and Mocha will be reopened.
The UN has warned that an already catastrophic humanitarian crisis in Yemen was worsening each day that aid shipments remained blocked. While the language of the resolution calls to "increase efforts to adopt all necessary and appropriate measures to prevent civilian casualties and increase humanitarian access", it does not call for an end to US support of the Saudi-led coaltion attacking Yemen. The coalition closed all Yemen air, land and seaports last week in response to a rebel ballistic missile attack on Riyadh. "We have some 21 million people needing assistance and seven million of those are in famine-like conditions and rely completely on food aid", United Nations humanitarian coordinator for Yemen Jamie McGoldrick said. However, Saudi Arabia demanded more rigorous checks at the Red Sea port of Hodeida, which is being controlled by the rebels. More than 2,000 Yemenis have died in a cholera outbreak now affecting almost one million people, AFP reported.