The Cochin International Airport has suspended all flight operations till Saturday.
The CIAL management on Wednesday said the airport would be closed until August 18 due to heavy rains and resultant flooding.
The decision to suspend the operations was taken after shutters of the Idamalayar and Cheruthoni dams, part of Idukki reservoir, were opened last evening to release excess water.
Congress chief Rahul Gandhi today tweeted to say he has spoken to Prime Minister Narendra Modi regarding the help needed for Kerala, which is reeling under the worst bout of monsoon rain in a Century.
Flooding in India's southern tourist hotspot of Kerala has killed at least 67 people and left more than 50,000 people seeking shelter in relief camps, a state official said.
With heavy rain lashing the district for over 20 hours continuously, many parts of Ernakulam have been flooded.
The state government said that Onam celebrations at the Kerala Raj Bhavan stand cancelled and the funds will instead for used for relief and rehabilitation of those affected by the floods. Trains have been delayed due to the landslide at Vallathol Nagar in Vadakkanchery.
"Presently, 35 reservoirs in the state are releasing water".
More than 1.5 lakh people have been lodged in relief camps across the state, Vijayan said. The Kochi metro services have also been suspended as water level rose in the Muttom Metro yard.
Scheduled domestic airlines have also been advised to operate relief flights to Thiruvananthapuram/Kozhikode for passengers of diverted flights, who have landed at Bangalore, Coimbatore and Chennai on 15 August 2018 morning instead of Kochi. "The neighbouring states have been helping us and we need their help in the future too", added the chief minister.
Chief Minister Pinarayi Vijayan while addressing the media here informed that the state is witnessing such a situation for the first time.
Three new teams of Military Engineering Task Force arrived in the state capital in the night. The water level in Mullaperiyar Dam has reached 142 ft.
Peermade in Idukki recorded the highest rainfall of 27 cm yesterday while Idukki town received 23 cm, Munnar 22 cm and Karipur in Malappuram 21 cm.
Torrential rains, overflowing rivers and a series of landslides have claimed 40 lives in Kerala over the past week.
Bus services to Kochi were also affected after National Highways connecting the city submerged in Kalamassery area, officials said.