The best month to fly between Delhi and Lucknow is March and the most expensive month to fly is July. (Average prices, based on 354 datapoints.)
The best day to arrive at Delhi is Thursday and it would be best to avoid Sunday, as prices are on average 159.96% higher than on Thursday. (Average prices, based on 474783 datapoints.)
The best time to fly is at around 5. (Average prices, based on 503 datapoints.)