NEW DELHI, June 30 (Reuters) - The death toll from this

week's sudden heavy rain has climbed to 11 in New Delhi,

including four citizens who drowned in submerged underpasses,

the Times of India reported, while flight operations stuttered

in the Indian capital.

New Delhi, which endured one of its worst heatwaves in

history earlier this month, faced the biggest downpour in

decades on June 28, with rainfall in a single day surpassing the

city's average for the entire month.

The torrential rain caused a fatal roof collapse at one of

the three terminals of Delhi's main airport, disrupted flights,

flooded underpasses, and led to massive traffic jams, power and

water outages in parts of the city.

Nearly 60 flights were cancelled from New Delhi's main

airport in the last 24 hours, according to data from flight

tracking platform Flightaware.

Operations were largely normal on Sunday, with most flights

from the affected terminal diverted to the other two, an airport

official said but did not rule out possible flight cancellations

in the course of the day.

The Delhi airport is one of the country's biggest and

busiest.

Terminal 1, the now-closed terminal, is mostly used by

low-cost carriers IndiGo, operated by Interglobe Aviation

, and SpiceJet, and currently has a capacity to handle

40 million passengers annually.

An Indigo spokesperson did not comment on the flight

cancellations and a SpiceJet spokesperson did not immediately

respond to a phone call.