New Delhi, Dec. 21 -- IndiGo issued a travel advisory on Saturday, warning passengers of possible flight disruptions due to early-morning fog expected across Delhi and several parts of northern India on Sunday. The airline said reduced visibility in the early hours could affect flight operations, leading to delays or schedule changes.

IndiGo said, "Early-morning fog is expected to affect visibility across Delhi and parts of northern India. During these hours, visibility can suddenly reduce, impacting flight operations." The advisory added that safety remains the airline's top priority.

IndiGo added that its operations teams will remain fully prepared through the night, closely monitoring weather conditions on a minute-by-minute basis to...