The best month to arrive at Dusseldorf is December and the most expensive month to fly is January. (Average prices, based on 1326 datapoints.)
The best day to arrive at Dusseldorf is Wednesday and it would be best to avoid Sunday, as prices are on average 60.06% higher than on Wednesday. (Average prices, based on 1442 datapoints.)
The cheapest airline flying to Dusseldorf is Eurowings. They are 50% cheaper than Lufthansa. (Average prices, based on 1339 datapoints.)