In general, when booking your flight to New Delhi, March is the cheapest month on average.
Most flyers found that booking flight tickets 60 days in advance of their planned departure date is, on average, the best time to get cheap flights to New Delhi.
In general, booking your departure to New Delhi for a Thursday represents the best deal on airfare. Try to avoid a Saturday departure to stay away from the highest prices.
Generally, when visiting New Delhi, midday flights represent the best value. morning flights are likely to have higher prices.