Indian airlines Air India and Akasa Air said on Tuesday they were cancelling some flights after ash plumes from a volcanic eruption in Ethiopia disrupted operations.
Air India said it had cancelled 11 flights on Monday and Tuesday to make precautionary checks on aircraft that had flown over some locations after the eruption, following a directive to airlines from India's aviation regulator.
Smaller peer Akasa said it had scrapped scheduled flights with Middle East destinations such as Jeddah, Kuwait and Abu Dhabi scheduled during the two days.
The ash cloud is moving towards China and is expected to clear Indian skies by 1400 GMT Tuesday, the India Meteorological Department (IMD) said in a statement.
Ethiopia's Hayli Gubbi volcano sent ash plumes up to 14 km high after erupting on Sunday for the first time in recorded history, according to media reports.
On Tuesday, the ash had covered parts of Pakistan and northern India, according to tracking website Flightradar24, after crossing Yemen and Oman.
The US and Iran failed to reach an agreement to end their war despite lengthy talks that concluded on Sunday in the Pakistani capital Islamabad, jeopardising a fragile ceasefire.
At least 30 people were killed on Saturday in a stampede at the Laferriere Citadel in the northern countryside of Haiti, authorities said, warning that the death toll could rise.
A cyclone battered New Zealand's North Island on Sunday, cutting power to thousands of residents and forcing hundreds to evacuate, as officials warned conditions would worsen through the day.
Negotiations between the United States and Iran appeared to have concluded for now, Iran's government has announced early on Sunday, after a series of talks in Pakistan to end the six-week war between Washington and Tehran.
Costa Rica on Saturday has received the first group of migrants from other countries deported from the United States under an agreement signed in March between the two countries, local authorities said.