There are daily non-stop flights between Beijing and Lanzhou (see flight information below). You can download the complete flight information between Lanzhou Zhongchuan airport and many other cities in China here. The Lanzhou airport is about one-hour drive from the city (~42 km / 26 miles). Below is the map showing the way between the city and the airport. There is an airport bus service between the airport and the city (RMB 30.00 one way per person).

Below is the schedule information and map for the airport shuttle bus.

There are daily non-stop flights between Beijing and Lanzhou. Usually the duration for the trip between Beijing and Lanzhou is two hours.

Beijing to Lanzhou:
FLIGHT    DEPARTING TIME 
HU7231    7:35
CA1273    8:10
HU7631    11:10
MU2412    11:35
CA1271    12:05
FM9148    13:30
CA1221    15:25
CA1275    17:35
MU2416    18:10
CA1277    20:10
MU2418    21:20
 
Lanzhou to Beijing
FLIGHT      DEPARTING TIME
CA1278      8:15
MU2411      8:20
HU7232      10:50
CA1274      11:30
HU7632      14:10
MU2415      14:50
CA1272      15:20
FM9147      16:30
MU2417      17:55
CA1222      18:40
CA1276      20:45