The Ukraine International Airlines plane was brought down by a missile shortly after takeoff on Wednesday, killing all 176 passengers and crew on board.
Iran said it had carried out pre-dawn ballistic missile attack on Wednesday against two air bases used by the US and other coalition forces in Iraq, in retaliation for the targeted killing on the outskirts of Baghdad airport on Friday.
For the burial of top general Qasem Soleimani in the final stage of funeral processions after he was killed in a US strike in Iraq, people from Iran gathered to pay one last tribute to him.
The Iraq Parliament had called on the US military to leave over the assassination of Iran's top General Qasem Soleimani in a drone attack in Baghdad.
While sharply critical of US actions including threats of sanctions against Iraq, Foreign Ministry spokesman Geng Shuang, however, hinted that Beijing plans to go ahead with the signing of the phase one deal with US next week to end the ongoing trade war.
Clutching portraits of their hero, the crowd gathered on the outskirts of Tehran University where the supreme leader is to preside over prayers for the slain general, an AFP correspondent reported.
Britain will not lament the death of Iranian general Qasem Soleimani, Prime Minister Boris Johnson said Sunday, though he warned that reprisals would lead to greater violence.
Almost every Irani took to street mourning, weeping and beating their chests in homage to top general Qasem Soleimani who was killed in a US strike in Baghdad.