The best month to fly between Delhi and Patna is September and the most expensive month to fly is November. (Average prices, based on 2319 datapoints.)
The best day to arrive at Delhi is Thursday and it would be best to avoid Sunday, as prices are on average 119.84% higher than on Thursday. (Average prices, based on 344182 datapoints.)
The cheapest airline flying from Delhi to Patna is Spicejet. They are 46% cheaper than Air India. (Average prices, based on 2323 datapoints.)
The best time to fly is at around 18. (Average prices, based on 2826 datapoints.)