We've gone through lots of different flights, to help you find the cheapest way to get from London Gatwick to Hangzhou. You can choose from zero airlines.
If you want to broaden your search, look at flights departing from other airports.
The distance between London Gatwick to Hangzhou is 9274 km. You can see the various flight times in the results.
You can also search by month, which will reveal the cheapest time of the week to fly.