Go through your results for flights to Chengdu in China with Netflights. Although KLM usually has the best prices, it's best to double check what's available for your travel dates.
If these flights are too expensive, try searching for a different time of year. It's likely that prices for both flights and accommodation in Chengdu will be higher during October. Meanwhile, November is nearly always the cheapest time to fly. So if your dates are flexible, consider looking at different times of year.
But if you're struggling to find flights to Chengdu that work for you, try looking at other airports in China. We've compared 99 flights across the globe so far today, so there's bound to be one that suits you.
Looking at a few different departure airports will give you even more choice. See what you can find. And remember, it's best to book your flights in advance wherever possible.