Dense foggy conditions in Delhi have caused significant disruptions at Indira Gandhi International (IGI) Airport, affecting flight schedules across the city and northern India. On 19 December 2025, IndiGo, SpiceJet, and Delhi Airport issued travel advisories urging passengers to check flight statuses before traveling, as CAT III operations were enforced due to severely reduced visibility.

Flight disruptions at IGI Airport

The dense fog, particularly during the early morning hours, has led to delays stretching up to six hours for several flights. A Mint journalist reported that an IndiGo flight scheduled for 11:55 pm on Thursday was rescheduled to 6:30 am on Friday. Long queues were observed near food outlets as passengers waited for updates, and passengers had to undergo repeated security checks to re-enter terminals.

IndiGo issued a statement acknowledging the delays, explaining that early morning fog in Delhi and across northern India was impacting visibility and air traffic operations. The airline assured that flight movements were being managed safely, with teams actively coordinating with air traffic authorities to minimize inconvenience. Passengers were advised to check the latest flight status online before leaving for the airport.

Delhi Airport advisory

In its advisory issued around 8 am, Delhi Airport confirmed that dense fog led to CAT III operations, which could result in flight delays and disruptions. Airport authorities highlighted that on-ground teams were working closely with stakeholders to assist passengers and provide necessary support across all terminals. Passengers were urged to contact their airlines for real-time flight updates.

The advisory also reassured passengers, stating: “We sincerely regret any inconvenience caused and appreciate your understanding,” emphasizing the seasonal nature of the fog and the efforts being made to manage operations safely.

Airline responses

IndiGo recommended that customers traveling in the early hours monitor flight updates and be prepared for delays or revised timings. They confirmed that operational adjustments were being made to ensure safe and orderly services, including provision of refreshments to stranded passengers.

SpiceJet issued a similar advisory, noting that poor visibility at Delhi and thunderstorms in Dubai could affect all departures and arrivals. Passengers were advised to check flight status on the airline’s website to stay informed. Both airlines emphasized their commitment to providing support across all key touchpoints during the weather disruption.

Impact on passengers

The dense fog has not only delayed flights but also increased passenger anxiety, leading to long queues at check-in and food counters. Travelers experienced extended waiting times and were required to repeat security protocols due to rescheduled flights. This disruption coincides with ongoing operational pressures at IndiGo, highlighting broader challenges in handling high passenger volumes during adverse weather conditions.

Weather context and safety measures

Dense fog conditions in Delhi during December are common due to low temperatures and humidity levels. CAT III operations are implemented when visibility drops below the safe threshold for normal aircraft landing and takeoff procedures. These operations rely on instrument landing systems to guide aircraft safely, ensuring passenger safety despite limited visibility.

Authorities continue to monitor weather conditions closely, coordinating with airlines to minimize disruption and maintain smooth airport operations. Passengers are advised to plan extra time for travel, stay updated on flight information, and follow airport guidance for a safe journey.

Conclusion

Dense fog at Delhi IGI Airport has caused significant flight delays and disruptions, with IndiGo reporting delays of up to six hours. Both Delhi Airport and airlines like IndiGo and SpiceJet have issued advisories urging passengers to check their flight status and remain patient. CAT III operations are in effect, prioritizing passenger safety while ensuring flights operate as efficiently as possible under challenging weather conditions. Travelers are advised to stay informed, cooperate with airport authorities, and plan additional time for check-ins and security procedures during this seasonal weather event.

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