Dense fog and toxic smog continued to disrupt normal life in the national capital on Monday morning, severely affecting visibility and air travel across Delhi and surrounding areas. The adverse weather
conditions prompted several airlines, including Indigo, Air India and SpiceJet, to issue advisories.
The IndiGo airline issued a travel advisory for passengers flying to and from Delhi and Hindon airports. In a post on X, the airline said fluctuating visibility due to fog had led to changes in flight schedules and warned passengers to expect slower operations until weather conditions improve.
“Delhi and Hindon (Airport) continue to remain wrapped in chilly winter air and lingering fog this morning. The fluctuating visibility has led to changes in flight schedules, and operations may be slower than usual as conditions evolve. Our teams on-ground are prioritising safety and compliance with visibility requirements,” it tweeted.
Travel Advisory#Delhi and #Hindon (Airport) continue to remain wrapped in chilly winter air and lingering fog this morning. The fluctuating visibility has led to changes in flight schedules, and operations may be slower than usual as conditions evolve. Our teams on-ground are…
— IndiGo (@IndiGo6E) December 28, 2025
IndiGo advised travellers to regularly check their flight status and make use of rebooking or refund options if their journeys were affected, noting that airport authorities and airline ground staff were deployed to assist passengers at terminals, as foggy conditions continued to disrupt departures and arrivals. Officials said flight operations would gradually return to normal once visibility improves.
“Our airport teams are also available to assist should you need support while at the terminal. Once the weather settles, operations will gradually stabilise, and flights will depart as planned. Thank you for your patience and understanding. We look forward to welcoming you onboard soon,” it further wrote on X.
Air travel in Delhi was particularly affected due to the low visibility. The Delhi airport authorities said flight operations were being conducted only under CAT III conditions, which allow aircraft to take off and land in extremely poor visibility. On Monday morning, runway visibility at the airport ranged between 100 and 150 metres.
Officials cautioned that flight delays and cancellations were likely. The airport said ground staff had been deployed across terminals to assist passengers and manage the situation, and travellers were advised to check flight updates directly with their airlines.
Air India also issued a warning on Sunday night, saying dense fog was expected across parts of northern India, including Delhi, which could impact flight operations. The airline said measures had been taken to minimise disruptions, but delays, diversions, or cancellations could still occur.
Delhiites woke up to another foggy morning on Monday as dense fog blanketed the city, reducing visibility and slowing traffic, prompting the India Meteorological Department (IMD) to issued a ‘red alert’ for fog, warning of hazardous conditions.
Visibility dropped sharply late Sunday night and remained poor through the early hours of Monday, making travel difficult and risky. At the same time, air quality in the capital slipped back into the ‘severe’ category, raising health concerns for residents.
