An IndiGo flight, 6E6715, traveling from Mumbai to Chandigarh, was compelled to return to Mumbai after spending nearly five hours in the air due to extremely dense fog conditions at Shaheed Bhagat Singh International Airport in Chandigarh. The incident occurred on Monday, January 15, 2026, causing significant inconvenience to approximately 180 passengers onboard. The flight was originally scheduled to depart from Mumbai at 8:20 PM and arrive in Chandigarh by 10:25 PM. However, it departed over an hour late, taking off at 9:39 PM. As the aircraft approached Chandigarh, it was unable to land due to severely poor visibility caused by the fog, which led to the closure of the runway. Consequently, the flight was diverted and eventually returned to Mumbai, touching down at 2:19 AM. Passengers remained airborne for about 4 hours and 48 minutes. Reports indicate that some passengers, including a city-based chartered accountant, had expressed concerns to airline officials about the prevailing fog conditions in Chandigarh even before the flight's delayed departure. Despite these warnings, the airline proceeded with the operation, ultimately leaving passengers to contend with extended travel and the need to arrange alternative onward travel. This event is consistent with wider reports of severe fog disrupting flights across North India during the current winter season, leading to numerous cancellations and delays at various airports. The story has been corroborated by multiple credible news outlets, including The Economic Times and The Times of India, both reporting on January 15, 2026.