The airport management said flights were diverted to Ahmedabad, Hyderabad and Indore. Priority is being given to arrivals, departure delays and consequent changes made to accommodate diverted flights.

The airport also advised passengers to check the status of their flight before leaving home for their trip.

"Today, heavy rain and low visibility caused runway operations to be suspended from 2:22 a.m. to 3:40 a.m. 27 flight diversions were reported," he said.

"In light of the inclement weather and the forecast of heavy to very heavy rain, Mumbai Airport advises all passengers to check their flight status with their respective airlines and depart for the airport a little early," it said. CSIA in a post on X.

Airlines, including IndiGo and Air India, offer the option to find alternative flights or claim a full refund.

"Travel Advisory: Flights to/from Mumbai are affected due to heavy rain. To opt for an alternative flight or claim a full refund, please feel free to contact our ground team for immediate assistance," IndiGo said in a post on X.

Air India said: "Heavy rain in Mumbai is impacting flight operations and leading to the cancellation of some of our flights. Air India is offering full refunds or a one-time free rescheduling for confirmed bookings for travel on July 8 with some conditions. For For further assistance, please contact our contact center at 011 69329333, 011 69329999."

Low-cost airline Spicejet has advised passengers to check the status of their flight before leaving for the airport.

"Weather Update: Due to bad weather (heavy rain) in Mumbai (BOM), all departures/arrivals and their consequent flights may be affected. Passengers are requested to keep a check," it said in a post on X.

National airline Vistara said: "Travel update: Heavy traffic congestion and slow movement of vehicles are expected today en route to Mumbai airport due to weather conditions. Customers are advised to allow more time for their journey to airport".

Meanwhile, Maharashtra Chief Minister Eknath Shinde said state authorities are working to restore train and road services, which have been disrupted due to heavy rains, and asked Mumbai residents to stay indoors. house due to flooding on roads and train tracks.