Different documents needed to board Tibet trains and flights At present, by train and by air to Lhasa are the most popular ways among tourists traveling to Tibet. But foreign travelers need Tibet permits for traveling to Tibet. While different documents are needed to board Tibet trains and flights flights. If you fly into Tibet, you need the original Tibet permit to board the flight to Lhasa. In this case, your Tibet Travel Agency will send the original Tibet permit to your hotel in the city from which you will fly to Tibet or have someone meet you at the airport and give you the original permit. If you get into Tibet by railway, a copy of the Tibet permit is enough. In this case, your Tibet Travel Agency will send you a copy of the Tibet permit by email or fax or send it to your hotel in the city from which you will board the train to Lhasa, such as Beijing, Shanghai, Chengdu and Xining. However, after the new policy on Tibet permits was issued by Tibet Tourism Bureau in May of 2012, you need to take the same flight to Lhasa with the other travelers in your tour group who will also fly to Lhasa. But if you take a train to Lhasa, you are not required to take the same train with your other travel partners. For example, you are going to take a train from Beijing to Lhasa while one of your travel partners will take a train from Shanghai to Lhasa, and your other travel mates will fly to Lhasa from Chengdu. Thatâ€™s ok. Some foreign tourists may also think that Tibet permit is also required for booking air tickets or train tickets to Lhasa. Actually, you only need your passport to book the train/air tickets.