At the moment, there are zero airlines flying to Lanzhou. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Lanzhou.
But that doesn’t necessarily mean they’ll be the best option for your travel dates. To see as many flights as possible, try widening your search to include other departure airports.
You can view all flight times yourself in the results list.
Searching by month, for instance, will show you the best time of the week to fly.