Please be aware that Kuala Lumpur and Shanghai has multiple airports and that these results are for all airports serving the city.
The best month to fly between Kuala Lumpur and Shanghai is September and the most expensive month to fly is October. (Average prices, based on 550 datapoints.)
The best day to arrive at Kuala Lumpur is Thursday and it would be best to avoid Sunday, as prices are on average 119.68% higher than on Thursday. (Average prices, based on 562 datapoints.)
The cheapest airline flying from Kuala Lumpur to Shanghai is AirAsia X. They are 46% cheaper than Shanghai Airlines. (Average prices, based on 557 datapoints.)
The best time to fly is at around 18. (Average prices, based on 661 datapoints.)