Global aid groups have welcomed the decision to let aid in, but said aid flights are not enough to avert a humanitarian crisis.
The United Nations has warned that unless the blockade is lifted, Yemen will face "the largest starvation the world has seen for decades". The UN humanitarian affairs office said desperately needed shipments of food and medical supplies were unable to arrive at the Red Sea port of Hodeida, which remains blocked.
On Friday, the United Nations said the Saudi-led Arab alliance had agreed to resume flights to the Yemeni capital Sanaa starting Saturday.
The UN children's fund UNICEF said Saturday's flight was carrying more than 15 tonnes, or 1.9 million doses, of vaccine for diphtheria, tetanus and other preventable diseases. The brief opening of the blockade for humanitarian deliveries also meant opening the Sana'a airport in Yemen's capital city. This includes Sana'a airport and Hodeida Port, which will ensure their speedy delivery to those in need throughout Yemen.More news: Nintendo Releases 'Animal Crossing: Pocket Camp' for iOS
United Nations officials cautiously welcomed the decision and said they also expect the port of Salef also reopen.
The action came after Saudi Arabia intercepted a missile fired towards Riyadh.
The U.S. -backed coalition closed air, land and sea access on November 6, in a move it said was to stop the flow of arms to the Houthis from Iran.
On November 6, Saudi Arabia imposed a blockade on Yemen as a response to a missile launch from its territory in a bid to prevent the transfer of military goods to the Houthis, as the kingdom accused Iran of supplying Yemeni rebels with short-range ballistic missiles.More news: Heads roll after leak of 57m Uber user details reported
Speaking to the Tasnim News Agency, Nasruddin Amer said bin Salman has recently threatened that the Riyadh-led aggression against Yemen would not stop and that the Saudi regime will not allow "another Hezbollah" to be formed in Yemen.
Sources in Washington said that US Secretary of State Rex Tillerson had asked Saudi Arabia to ease its blockade of Yemen before the kingdom chose to do so.
The conflict in Yemen pits Houthi rebels and forces loyal to Yemen's ousted president against the internationally recognized government and its main backer, the Saudi-led coalition.
OCHA said in its latest report on Thursday that Yemeni fuel importing companies "will not be able to supply local markets at the end of this week".More news: Samsung likely previewing Galaxy S9 and S9 Plus at CES
In an interview just before the coalition made the announcement, McGoldrick told The Associated Press that a continued blockade would make Yemen's long-suffering population more vulnerable to cholera and starvation.