We've gone through them all to help you find the right flight for you. If you can't find what you're looking for, consider widening your search by looking at flights from a different airport.
But when you fly is just as important as who you fly with. If you're flexible on dates, try searching by month to see when the cheapest flights are.
Another way to get a cheap flight is to book last minute – but this does mean you may not be able to get the exact flights you want.
Did you know you can also compare hotel and car hire prices in China with Netflights? Take a look to get an idea of prices in Lanzhou.