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Heavy rain and a red alert in Delhi on Friday disrupted operations at Indira Gandhi International Airport, with extensive waterlogging, diversions and delays prompting IndiGo and Air India to issue travel advisories for passengers flying to and from the capital.
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Waterlogging and weather alerts hit India’s busiest airport
Reports indicate that a brief but intense spell of afternoon rain on September 4 left forecourt areas and access roads around Delhi’s Indira Gandhi International Airport partially waterlogged, slowing traffic and complicating passenger movement. Images and video from the scene showed vehicles inching through standing water and travellers navigating flooded stretches outside the terminals.
Published coverage notes that the India Meteorological Department placed the city under a red alert for heavy rainfall and thunderstorms as the downpour swept across Delhi and parts of the wider National Capital Region. The alert signalled a high likelihood of further intense showers, gusty winds and associated disruption over several hours.
Airport-focused reports add that while water was largely confined to approach roads and the forecourt, the combination of reduced visibility, strong winds and wet runway conditions forced air traffic managers to temporarily slow operations. By early evening, operations were gradually stabilising, but knock-on effects for the wider network were still unfolding.
Citywide, the same spell of rain flooded key corridors from Connaught Place to Lajpat Nagar, compounding access problems for passengers trying to reach the airport and lengthening door-to-door travel times even for flights that remained on schedule.
Flight diversions and widespread delays ripple through schedules
According to multiple news reports, at least nine flights were diverted from Delhi between roughly 3:30 pm and 4:30 pm as the weather peaked, with aircraft re-routed to Jaipur, Lucknow and Ahmedabad. Aviation trackers cited by local media described a sharp but concentrated period of disruption, as controllers briefly halted some arrivals while conditions stabilised.
Separate coverage drawing on operational data suggests the impact extended far beyond the initial diversions, with more than 400 flights reportedly delayed at IGI over the course of the afternoon and early evening. Delays ranged from minor schedule slips to longer waits as airlines struggled to reposition aircraft and crew after the weather window closed.
Arrivals from key domestic hubs such as Mumbai, Ahmedabad and Port Blair were among those affected, alongside services from smaller cities that rely heavily on tight turnarounds in Delhi. Observers noted that once afternoon bank operations were pushed back, knock-on effects spread into the evening wave of departures and connecting flights.
While no major safety incidents were reported in connection with the storm, the combination of diversions, airborne holding and extended taxi times added to fuel and operational costs for carriers already contending with a busy late-monsoon period.
IndiGo and Air India urge passengers to plan ahead
In response to the deteriorating conditions, IndiGo issued a travel advisory stating that bad weather over Delhi was affecting flight operations and schedules. Public posts highlighted the risk of further delays and urged customers to monitor real-time flight status on the airline’s website or mobile app before leaving for the airport.
Coverage of the disruption also notes that Air India released a similar advisory for its domestic and international passengers using Delhi as an origin, destination or transit point. The carrier pointed travellers to its digital channels for the latest timings and encouraged them to allow extra time to reach the airport because of waterlogging and traffic congestion on key approach roads.
News reports mention that IGI Airport’s operator shared its own passenger update, indicating that operations were being adjusted in line with air traffic control directives and the prevailing weather, and that flyers should check with their airlines for specific flight information. The combined messages from airlines and the airport underlined that the disruption was weather-related and subject to further change if additional storms developed.
Industry analysts observing the situation remarked that such advisories have become standard practice during intense weather events, intended to shift as many passengers as possible to self-service channels and reduce queues at airport counters when staff are managing irregular operations.
What travellers through Delhi should expect next
Meteorological bulletins cited in media coverage indicate that, after Friday’s red alert, the outlook for Delhi was expected to ease to a yellow alert, with forecasts of light to moderate rain and isolated thunderstorms over the following day. That downgrade suggested a lower probability of extreme downpours, but not a complete end to weather-related interruptions.
For passengers, the immediate implication is that schedules may remain fragile for several rotations as airlines clear backlogs, reposition aircraft and re-align crews. Even flights departing once clear skies return can experience delay if previous sectors operated late or if aircraft were diverted to alternate airports during the peak of the storm.
Travel advisories highlighted across outlets recommend that passengers use airline apps or official websites to confirm departure and arrival times, sign up for SMS or email notifications where available, and arrive at the airport earlier than usual when heavy rain is forecast. Travellers connecting in Delhi, particularly on separate tickets, are being encouraged to factor in additional buffer time in case of residual delays.
Observers note that late monsoon systems affecting Delhi and the wider northern region have historically produced sudden, high-intensity downpours that strain both aviation and urban infrastructure. The latest episode reinforces calls from some commentators for more resilient drainage near critical transport hubs, alongside continued investment in weather forecasting and air traffic management tools that can help airlines and passengers anticipate disruption.
Part of a broader pattern of weather-linked aviation disruption
The latest rain-related disruption at IGI fits into a broader pattern seen over recent seasons in the capital, when powerful pre-monsoon and monsoon storms have slowed or suspended operations. In previous years, similar episodes have led to hundreds of delays in a single day and prompted repeated advisories from IndiGo, Air India and other carriers urging passengers to check flight status and leave home earlier when heavy rain is expected.
Analysts quoted in past coverage point out that IGI handles more than 1,500 flight movements on busy days, leaving limited slack in the system when severe weather temporarily restricts arrivals or departures. Once a rush hour wave is disrupted, recovery can take much of the day, particularly when storms coincide with peak holiday or festival traffic.
Commentary around the current episode suggests that as climate variability brings sharper swings in rainfall intensity, aviation stakeholders in Delhi may face mounting pressure to plan for repeated weather shocks each monsoon season. For airlines such as IndiGo and Air India, this means refining contingency playbooks, enhancing communication with passengers and coordinating closely with the airport operator and air traffic control to restart normal flows as soon as conditions permit.
For travellers, the practical takeaway from this week’s events is that Delhi’s weather can change quickly, and that monitoring conditions and airline updates remains essential when heavy rain is on the forecast, even outside of the peak monsoon months.
Economic Times: Delhi weather and airline advisories
National Revealed: Waterlogging at Delhi Airport, IMD red alert