Chengdu, Lhasa, and Xi'an Xianyang are the top airports Tibet Airlines flies into and out of during the year.
The cheapest domestic Tibet Airlines flight is flying Quanzhou Jinjiang to Xuzhou, which is $357. This round-trip flight has 0 stops. The cheapest one-way Tibet Airlines ticket is flying from Beijing Capital to Chengdu. You can expect to pay around $56 per ticket. This flight has 0 stops.
No, there are no Tibet Airlines flights from Los Angeles. However, Tibet Airlines does fly from Harbin on a weekly basis. You could also fly with China Express Airlines from Los Angeles as an alternative travel solution.