>>>The most convenient way to enter Tibet is just from Chengdu, there are several flights between Chengdu and Lhasa everyday all around the year.You can find more flights info fits for you on this website.
There are daily trains shuttled between Beijing, Xi'an, Xi'ning, Lanzhou and Lhasa. And every other day between Shanghai, Guangzhou, chongqing, Chengdu and Lhasa. There are the acurate dates for these trains as below:
| Train No. | Leave | Arrive | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T166 | Lhasa | Shanghai | odd | even | even | odd | odd | even | even | odd | even | even | odd | odd |
| T266 | Lhasa | Guangzhou | even | odd | odd | even | even | odd | odd | even | odd | odd | even | even |
| T224 | Lhasa | Chongqing | odd | even | even | odd | odd | even | even | odd | even | even | odd | odd |
| T24 | Lhasa | Chengdu | even | odd | odd | even | even | odd | odd | even | odd | odd | even | even |
Due to the long distance, there are few people would like to take Sichuan-Tibet; Qinghai-Tibet and Yunnan Tibet road except the real adventure people. If you are planning a tour from Kathmandu to Tibet via Nepal-Tibet highway, please avoid to travel in August, there may be mountain slide occured due to the rainy season.